NEET · 2014

NEET 2014
Previous Year Questions

Complete NEET 2014 question paper — 180 questions across Physics, Chemistry and Biology with detailed solutions and AI explanations.

180

Total

49

Physics

40

Chemistry

91

Biology

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Difficulty:180 questions

Previewing 10 questions free. Sign up to attempt all 180 NEET 2014 questions with AI explanations.

12014

Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

Easy NEET 2014Human PhysiologyClass 11Chemical Coordination and Regulation

22014

Which one of the following shows isogamy with non-flagellated gametes?

Easy NEET 2014Plant KingdomClass 11Types of Sexual Reproduction in Algae

32014

Five kingdom system of classification suggested by R.H. Whittaker is not based on:

Easy NEET 2014Biological ClassificationClass 11Five Kingdom Classification

42014

Which one of the following fungi contains hallucinogens?

Easy NEET 2014Biological ClassificationClass 11Fungi and Their Reproduction

52014

Archaebacteria differ from eubacteria in:

Easy NEET 2014Biological ClassificationClass 11Archaebacteria and Eubacteria

62014

Which one of the following is wrong about Chara?

Medium NEET 2014Plant KingdomClass 11Chara Reproductive Structures

72014

Which of the following is responsible for peat formation?

Easy NEET 2014Plant KingdomClass 11Bryophytes

82014

Placenta and pericarp are both edible portions in:

Easy NEET 2014Morphology of Flowering PlantsClass 11Fruit Structure

92014

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as:

Easy NEET 2014Morphology of Flowering PlantsClass 11Aestivation

102014

You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two?

Medium NEET 2014Anatomy of Flowering PlantsClass 11Monocot and Dicot Tissues

112014

Which one of the following statements is correct?

Easy NEET 2014Morphology of Flowering PlantsClass 11Seed Structure

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122014

Tracheids differ from other tracheary elements in:

Easy NEET 2014Anatomy of Flowering PlantsClass 11Xylem Elements

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132014

An example of edible underground stem is:

Easy NEET 2014Morphology of Flowering PlantsClass 11Stem Modifications

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142014

Which structures perform the function of mitochondria in bacteria?

Easy NEET 2014Cell: The Unit of LifeClass 11Prokaryotic Cell Organization

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152014

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:

Medium NEET 2014Cell: The Unit of LifeClass 11Cytoskeleton

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162014

The osmotic expansion of a cell kept in water is chiefly regulated by:

Easy NEET 2014Cell: The Unit of LifeClass 11Cell Organelles

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172014

During which phase(s) of the cell cycle does the amount of DNA in a cell remain at 4C level if the initial amount is denoted as 2C?

Medium NEET 2014Cell Cycle and Cell DivisionClass 11DNA Content During Cell Cycle

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182014

Match the following and select the correct answer:

Easy NEET 2014Cell: The Unit of LifeClass 11Cell Organelles and Biomolecules

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192014

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

Medium NEET 2014Plant PhysiologyClass 11Plant Growth Regulators (Auxin)

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202014

Deficiency symptoms of nitrogen and potassium are visible first in:

Easy NEET 2014Plant PhysiologyClass 11Mineral Nutrition and Deficiency Symptoms

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212014

In which one of the following processes is CO₂ not released?

Easy NEET 2014Plant PhysiologyClass 11Respiration and Fermentation

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222014

Anoxygenic photosynthesis is characteristic of:

Easy NEET 2014Diversity In Living WorldClass 11Monera and Photosynthetic Bacteria

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232014

A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?

Easy NEET 2014Plant PhysiologyClass 11Plant Growth and Development

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242014

Which one of the following growth regulators is known as stress hormone?

Easy NEET 2014Plant PhysiologyClass 11Plant Growth Regulators

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252014

Geitonogamy involves:

Easy NEET 2014ReproductionClass 12Pollination and Fertilization in Flowering Plants

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262014

Male gametophyte with least number of cells is present in:

Medium NEET 2014ReproductionClass 12Male Gametophyte in Plants

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272014

An aggregate fruit is one which develops from:

Medium NEET 2014ReproductionClass 12Fruit Development

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282014

Pollen tablets are available in the market for:

Easy NEET 2014Biology And Human WelfareClass 12Plant Breeding and Pollen Preservation

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292014

Function of filiform apparatus is to:

Medium NEET 2014ReproductionClass 12Embryo Sac and Fertilization

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302014

Non-albuminous seed is produced in:

Easy NEET 2014Structural Organisation In Animals And PlantsClass 11Seed Structure and Endosperm

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312014

Which of the following shows coiled RNA strand and capsomeres?

Easy NEET 2014Cell: The Unit of LifeClass 11Viruses

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322014

Which one of the following is wrongly matched?

Easy NEET 2014Genetics And EvolutionClass 12Molecular Basis of Inheritance

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332014

Transformation was discovered by:

Easy NEET 2014Genetics And EvolutionClass 12Molecular Basis of Inheritance

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342014

Fruit colour in squash is an example of:

Medium NEET 2014Genetics And EvolutionClass 12Gene Interactions

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352014

Viruses have:

Easy NEET 2014Cell: The Unit of LifeClass 11Viruses

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362014

The first human hormone produced by recombinant DNA technology is:

Easy NEET 2014Biotechnology And Its ApplicationsClass 12Recombinant DNA Technology and Human Insulin

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372014

An analysis of chromosomal DNA using the Southern hybridization technique does not use:

Medium NEET 2014Biotechnology And Its ApplicationsClass 12Molecular Techniques

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382014

In vitro clonal propagation in plants is characterized by:

Medium NEET 2014Biotechnology And Its ApplicationsClass 12Micropropagation and Tissue Culture

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392014

An alga which can be employed as food for human beings is:

Easy NEET 2014Biology And Human WelfareClass 12Single Cell Protein

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402014

Which vector can clone only a small fragment of DNA?

Medium NEET 2014Biotechnology And Its ApplicationsClass 12Cloning Vectors

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412014

An example of ex situ conservation is:

Easy NEET 2014Ecology And EnvironmentClass 12Biodiversity Conservation

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422014

A location with luxuriant growth of lichens on the trees indicates that the:

Easy NEET 2014Ecology And EnvironmentClass 12Environmental Pollution and Bioindicators

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432014

Match the following and select the correct option:

Medium NEET 2014Ecology And EnvironmentClass 12Ecosystem, Succession and Population Ecology

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442014

A species facing extremely high risk of extinction in the immediate future is called:

Easy NEET 2014Ecology And EnvironmentClass 12Biodiversity Conservation

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452014

The zone of atmosphere in which the ozone layer is present is called:

Easy NEET 2014Ecology And EnvironmentClass 12Atmospheric Pollution and Ozone Layer

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462014

The organization which publishes the Red List of species is:

Easy NEET 2014Ecology And EnvironmentClass 12Biodiversity Conservation

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472014

Select the taxon mentioned that represents both marine and fresh water species:

Medium NEET 2014Diversity In Living WorldClass 11Animal Kingdom - Cnidaria

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482014

Which one of the following living organisms completely lacks a cell wall?

Easy NEET 2014Diversity In Living WorldClass 11Animal Kingdom - Characteristics of Major Groups

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492014

Planaria possess high capacity of:

Easy NEET 2014Structural Organisation In Animals And PlantsClass 11Animal Organization and Regeneration

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502014

A marine cartilaginous fish that can produce electric current is:

Easy NEET 2014Diversity In Living WorldClass 11Pisces

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512014

Choose the correctly matched pair:

Medium NEET 2014Structural Organisation In Animals And PlantsClass 11Animal Tissues - Connective Tissue

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522014

Choose the correctly matched pair:

Medium NEET 2014Structural Organisation In Animals And PlantsClass 11Animal Tissues - Epithelial Tissue

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532014

In 'S' phase of the cell cycle:

Easy NEET 2014Cell: The Unit of LifeClass 11Cell Cycle

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542014

The motile bacteria are able to move by:

Easy NEET 2014Cell: The Unit of LifeClass 11Cell Organelles and Cell Motility

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552014

Select the option which is not correct with respect to enzyme action:

Medium NEET 2014Cell: The Unit of LifeClass 11Biomolecules - Enzymes

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562014

Which one of the following is a non-reducing carbohydrate?

Medium NEET 2014Cell: The Unit of LifeClass 11Biomolecules - Carbohydrates

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572014

The enzyme recombinase is required at which stage of meiosis?

Medium NEET 2014Genetics And EvolutionClass 11Cell Division - Meiosis

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582014

The initial step in the digestion of milk in humans is carried out by:

Easy NEET 2014Human PhysiologyClass 11Digestion and Absorption

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592014

Fructose is absorbed into the blood through mucosal cells of intestine by the process called:

Medium NEET 2014Human PhysiologyClass 11Digestion and Absorption

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602014

Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs:

Medium NEET 2014Human PhysiologyClass 11Breathing and Respiration

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612014

Person with blood group AB is considered as universal recipient because he has:

Easy NEET 2014Human PhysiologyClass 11Body Fluids and Circulation

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622014

How do parasympathetic neural signals affect the working of the heart?

Medium NEET 2014Human PhysiologyClass 11Neural Control and Coordination

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632014

Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?

Medium NEET 2014Human PhysiologyClass 11Excretory Products and Their Elimination

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642014

Select the correct matching of the type of joint with the example in human skeletal system:

Medium NEET 2014Human PhysiologyClass 11Locomotion and Movement - Joints

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652014

Stimulation of a muscle fiber by a motor neuron occurs at:

Easy NEET 2014Human PhysiologyClass 11Locomotion and Movement - Muscle Contraction

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662014

Injury localized to the hypothalamus would most likely disrupt:

Medium NEET 2014Human PhysiologyClass 11Neural Control and Coordination

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672014

Which one of the following statements is not correct?

Medium NEET 2014Cell: The Unit of LifeClass 11Biomolecules and Visual Pigments

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682014

Identify the hormone with its correct matching of source and function:

Medium NEET 2014Human PhysiologyClass 11Chemical Coordination and Regulation

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692014

Fight-or-flight reactions cause activation of:

Easy NEET 2014Human PhysiologyClass 11Chemical Coordination and Regulation

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702014

The shared terminal duct of the reproductive and urinary system in the human male is:

Easy NEET 2014Human PhysiologyClass 12Human Reproduction

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712014

The main function of mammalian corpus luteum is to produce:

Easy NEET 2014Human ReproductionClass 12Menstrual Cycle and Hormonal Regulation

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722014

Select the correct option describing gonadotropin activity in a normal pregnant female:

Medium NEET 2014Human ReproductionClass 12Reproductive Hormones

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732014

Tubectomy is a method of sterilization in which:

Easy NEET 2014Human ReproductionClass 12Reproductive Health - Contraception

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742014

Which of the following is a hormone releasing intrauterine device (IUD)?

Medium NEET 2014Human ReproductionClass 12Reproductive Health - Contraceptive Methods

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752014

Assisted reproductive technology, IVF involves transfer of:

Easy NEET 2014ReproductionClass 12Assisted Reproductive Technologies (ART)

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762014

A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?

Medium NEET 2014Genetics And EvolutionClass 12Sex-Linked Inheritance

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772014

In a population of 1000 individuals, 360 belong to genotype AA, 480 to Aa and the remaining 160 to aa. Based on these data, the frequency of allele A in the population is:

Medium NEET 2014Genetics And EvolutionClass 12Population Genetics

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782014

A human female with Turner's syndrome:

Easy NEET 2014Genetics And EvolutionClass 12Chromosomal Disorders

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792014

Select the correct option:

Medium NEET 2014Genetics And EvolutionClass 12Molecular Basis of Inheritance - Transcription

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802014

Commonly used vectors for human genome sequencing are:

Medium NEET 2014Biotechnology And Its ApplicationsClass 12Human Genome Project and Cloning Vectors

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812014

Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of:

Easy NEET 2014EvolutionClass 12Evidence of Evolution - Homologous Organs

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822014

Which one of the following are analogous structures?

Medium NEET 2014EvolutionClass 12Analogous and Homologous Structures

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832014

Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below

Medium NEET 2014Biology And Human WelfareClass 12Drugs and Alcohol Abuse

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842014

At which stage of HIV infection does one usually show symptoms of AIDS?

Easy NEET 2014Biology And Human WelfareClass 12Human Health and Disease - AIDS

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852014

To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken?

Medium NEET 2014Biotechnology And Its ApplicationsClass 12Plant Tissue Culture

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862014

What gases are produced in anaerobic sludge digesters?

Easy NEET 2014Biology And Human WelfareClass 12Microbes in Human Welfare - Sewage Treatment

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872014

Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to:

Easy NEET 2014Ecology And EnvironmentClass 12Biodiversity Conservation and Protected Areas

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882014

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks:

Hard NEET 2014Ecology And EnvironmentClass 12Ecosystem - Biogeochemical Cycles (Phosphorus Cycle)

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892014

Given below is the representation of the extent of global diversity of invertebrates. What groups do the four portions (A-D) represent respectively?

Medium NEET 2014Diversity In Living WorldClass 11Animal Kingdom - Invertebrate Diversity

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902014

A scrubber in the exhaust of a chemical industrial plant removes:

Easy NEET 2014Ecology And EnvironmentClass 12Environmental Issues - Air Pollution Control

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912014

If 20 J of energy is trapped at producer level, then how much energy will be available to peacock as food in the following chain? plant → mice → snake → peacock

Easy NEET 2014Ecology And EnvironmentClass 12Ecosystem - Energy Flow

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922014

Which property of colloids is not dependent on the charge on colloidal particles?

Easy NEET 2014Surface ChemistryClass 12Properties of Colloids

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932014

Which of the following salts will give highest pH in water?

Easy NEET 2014EquilibriumClass 11Hydrolysis of Salts and pH of Salt Solutions

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942014

Of the following 0.10 M aqueous solutions, which one will exhibit the largest freezing point depression?

Medium NEET 2014SolutionsClass 12Colligative Properties and Depression in Freezing Point

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952014

When 22.4 litres of H₂(g) is mixed with 11.2 litres of Cl₂(g) each at S.T.P., the moles of HCl(g) formed is equal to:

Easy NEET 2014Some Basic Concepts of ChemistryClass 11Mole Concept and Stoichiometry

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962014

When 0.1 mol MnO₄²⁻ is oxidised, the quantity of electricity required to completely oxidise MnO₄²⁻ to MnO₄⁻ is:

Easy NEET 2014ElectrochemistryClass 12Faraday's Laws of Electrolysis

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972014

Using the Gibbs energy change, ΔG° = +63.3 kJ, for the following reaction, $Ag₂CO₃ ⇌ 2Ag + (aq) + CO₃²⁻(aq)$ the Kₛₚ of Ag₂CO₃(s) in water at 25°C is: (R = 8.314 J K⁻¹ mol⁻¹)

Medium NEET 2014EquilibriumClass 11Solubility Product and Gibbs Energy

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982014

The weight of silver (at. wt. = 108) displaced by a quantity of electricity which displaces 5600 mL of O₂ at STP will be:

Medium NEET 2014ElectrochemistryClass 12Faraday's Laws of Electrolysis

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992014

Which of the following statements is correct for the spontaneous adsorption of a gas?

Medium NEET 2014ThermodynamicsClass 11Adsorption and Thermodynamics

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1002014

For the reaction: $X₂O₄(l) → 2XO₂(g)$ ΔU = 2.1 k cal, and ΔS = 20 cal K⁻¹ at 300 K. Hence ΔG is:

Medium NEET 2014ThermodynamicsClass 11Gibbs Free Energy Change

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1012014

For a given exothermic reaction, Kₚ and K′ₚ are the equilibrium constants at temperatures T₁ and T₂, respectively. Assuming that the heat of reaction is constant in the temperature range between T₁ and T₂, it is readily observed that:

Medium NEET 2014ThermodynamicsClass 11Temperature Dependence of Equilibrium Constant

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1022014

Which of the following orders of ionic radii is correctly represented?

Easy NEET 2014Classification of Elements and Periodicity in PropertiesClass 11Ionic Radii and Isoelectronic Species

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1032014

1.0 g of magnesium is burnt with 0.56 g O₂ in a closed vessel. Which reactant is left in excess and how much? (At. wt. Mg = 24 ; O = 16)

Medium NEET 2014Some Basic Concepts of ChemistryClass 11Mole Concept and Limiting Reagent

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1042014

The pair of compounds that can exist together is:

Medium NEET 2014ElectrochemistryClass 11Oxidizing and Reducing Agents

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1052014

The pair of compounds that can exist together is:

Easy NEET 2014Chemical Bonding and Molecular StructureClass 11Molecular Geometry and Hybridization

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1062014

Be²⁺ is isoelectronic with which of the following ions?

Easy NEET 2014Structure of AtomClass 11Isoelectronic Species

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1072014

Which of the following molecules has the maximum dipole moment?

Medium NEET 2014Chemical Bonding and Molecular StructureClass 11Dipole Moment

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1082014

Which one of the following species has plane triangular shape?

Easy NEET 2014Chemical Bonding and Molecular StructureClass 11Molecular Geometry and Hybridization

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1092014

Acidity of diprotic acids in aqueous solutions increases in the order:

Easy NEET 2014Chemical Bonding and Molecular StructureClass 11Periodic Trends in Hydrides

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1102014

$(a) H₂O₂ + O₃ → H₂O + 2O₂$ $(b) H₂O₂ + Ag₂O → 2Ag + H₂O + O₂$ Role of hydrogen peroxide in the above reactions is respectively

Medium NEET 2014ElectrochemistryClass 11Oxidizing and Reducing Behaviour of Hydrogen Peroxide

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1112014

Artificial sweetener which is stable under cold conditions only is:

Easy NEET 2014BiomoleculesClass 12Artificial Sweeteners

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1122014

In acidic medium, H₂O₂ changes Cr₂O₇²⁻ to CrO₅, which has two (−O−O−) bonds. Oxidation state of Cr in CrO₅ is:

Medium NEET 2014The d- and f-Block ElementsClass 12Chromium Oxidation States

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1132014

The reaction of aqueous KMnO₄ with H₂O₂ in acidic conditions gives:

Easy NEET 2014ElectrochemistryClass 11Oxidizing Nature of Potassium Permanganate

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1142014

Among the following complexes, the one which shows zero crystal field stabilization energy (CFSE) is:

Hard NEET 2014The d- and f-Block ElementsClass 12Crystal Field Stabilization Energy

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1152014

Magnetic moment 2.83 BM is given by which of the following ions? (Atomic numbers: Ti = 22, Cr = 24, Mn = 25, Ni = 28)

Medium NEET 2014The d- and f-Block ElementsClass 12Magnetic Moment

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1162014

Which of the following complexes is:

Medium NEET 2014Coordination CompoundsClass 12Geometrical Isomerism and Cisplatin

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1172014

Reason of lanthanoid contraction is:

Easy NEET 2014The d- and f-Block ElementsClass 12Lanthanoid Contraction

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1182014

In the following reaction, the product (A)

Medium NEET 2014AminesClass 12Diazonium Salts and Azo Coupling Reaction

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1192014

Which of the following will be the most stable diazonium salt RN₂⁺X⁻?

Easy NEET 2014AminesClass 12Diazonium Salts

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1202014

D(+) glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be:

Medium NEET 2014BiomoleculesClass 12Glucose and Its Reactions

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1212014

Which one of the following is an example of a thermosetting polymer?

Easy NEET 2014PolymersClass 12Thermosetting Polymers

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1222014

Which of the following organic compounds polymerizes to form the polyester Dacron?

Easy NEET 2014PolymersClass 12Polyesters and Dacron (Terylene)

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1232014

Which of the following is not a common component of photochemical smog?

Easy NEET 2014Environmental ChemistryClass 12Photochemical Smog

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1242014

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neutralized 10 mL of 1 M H₂SO₄. The percentage of nitrogen in the soil is:

Medium NEET 2014Principles Related To Practical ChemistryClass 12Kjeldahl Method for Estimation of Nitrogen

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1252014

What products are formed when the following compounds is treated with Br₂ in the presence of FeBr₃?

Hard NEET 2014HydrocarbonsClass 11Electrophilic Aromatic Substitution - Halogenation of Alkyl Benzenes

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1262014

Which of the following compounds will undergo racemisation when solution of KOH hydrolyses?

Medium NEET 2014Haloalkanes and HaloarenesClass 12Nucleophilic Substitution and Racemization

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1272014

Among the following sets of reactants which one produces anisole?

Medium NEET 2014Alcohols, Phenols and EthersClass 12Williamson Ether Synthesis

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1282014

Which of the following will not be soluble in sodium hydrogen carbonate?

Medium NEET 2014Alcohols, Phenols and EthersClass 12Acidity of Phenols and Carboxylic Acids

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1292014

Which one is most reactive towards nucleophilic addition reaction?

Medium NEET 2014Aldehydes, Ketones and Carboxylic AcidsClass 12Nucleophilic Addition Reactions of Carbonyl Compounds

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1302014

Identify Z in the sequence of reactions:

Medium NEET 2014Haloalkanes And HaloarenesClass 12Peroxide Effect and Williamson Ether Synthesis

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1312014

Which of the following organic compounds has the same hybridization as its combustion product (CO₂)?

Easy NEET 2014HydrocarbonsClass 11Hybridization of Carbon

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1322014

If force (F), velocity (V) and time (T) are taken as fundamental units, then the dimensions of mass are:

Easy NEET 2014Units and MeasurementsClass 11Dimensional Analysis

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1332014

A projectile is fired from the surface of the earth with a velocity of $5\,\text{m s}^{-1}$ and angle $\theta$ with the horizontal. Another projectile fired from another planet with a velocity of $3\,\text{m s}^{-1}$ at the same angle follows a trajectory which is identical to the trajectory of the projectile fired from earth. The value of the acceleration due to gravity on the planet is (in $\text{m s}^{-2}$ ) given $g = 9.8\,\text{m s}^{-2}$ .

Easy NEET 2014KinematicsClass 11Projectile Motion

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1342014

A particle is moving such that its position coordinates $(x, y)$ are $(2\,\text{m}, 3\,\text{m})$ at time $t = 0$ , $(6\,\text{m}, 7\,\text{m})$ at time $t = 2\,\text{s}$ and $(13\,\text{m}, 14\,\text{m})$ at time $t = 5\,\text{s}$ . Average velocity vector $\left(\vec{v}_{\text{av}}\right)$ from $t = 0$ to $t = 5\,\text{s}$ is:

Easy NEET 2014KinematicsClass 11Motion in a Plane

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1352014

A system consists of three masses $m_1$ , $m_2$ and $m_3$ connected by a string passing over a pulley $P$ . The mass $m_1$ hangs freely and $m_2$ and $m_3$ are on a rough horizontal table (the coefficient of friction = $\mu$ ). The pulley is frictionless and of negligible mass. The downward acceleration of mass $m_1$ is: Assume $m_1 = m_2 = m_3 = m$ .

Medium NEET 2014Laws of MotionClass 11Friction

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1362014

The force 'F' acting on a particle of mass 'm' is indicated by the force-time graph shown below. The change in momentum of the particle over the time interval from zero to 8 s is :

Easy NEET 2014Laws of MotionClass 11Impulse and Momentum

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1372014

A balloon with mass 'm' is descending down with an acceleration 'a' (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration 'a'?

Medium NEET 2014Laws of MotionClass 11Newton's Laws of Motion

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1382014

A body of mass (4m) is lying in the x-y plane at rest. It suddenly explodes into three pieces. Two pieces, each of mass (m), move perpendicular to each other with equal speeds (v). The total kinetic energy generated due to explosion is:

Medium NEET 2014Laws of MotionClass 11Conservation of Linear Momentum

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1392014

The oscillation of a body on a smooth horizontal surface is represented by the equation: $x = A\cos(\omega t)$ where: $x = \text{displacement at time } t$ $\omega = \text{angular frequency of oscillation}$ Which one of the following graphs shows correctly the variation of acceleration 'a' with time 't'?

Medium NEET 2014Oscillations and WavesClass 11Simple Harmonic Motion

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1402014

A solid cylinder of mass $50\,\text{kg}$ and radius $0.5\,\text{m}$ is free to rotate about the horizontal axis. A massless string is wound round the cylinder with one end attached to it and the other hanging freely. The tension in the string required to produce an angular acceleration of $2$ revolutions $\text{s}^{-2}$ is:

Medium NEET 2014System of Particles and Rotational MotionClass 11Torque and Angular Acceleration

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1412014

The ratio of the accelerations for a solid sphere (mass 'm' and radius 'R') rolling down an incline of angle $\theta$ without slipping and slipping down the incline without rolling is:

Medium NEET 2014System of Particles and Rotational MotionClass 11Rolling Motion

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1422014

A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass $= 5.98 \times 10^{24}\,\text{kg}$ ) have to be compressed to be a black hole?

Medium NEET 2014GravitationClass 11Escape Velocity

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1432014

Dependence of intensity of gravitational field $(E)$ of earth with distance $(r)$ from the centre of earth is correctly represented by:

Medium NEET 2014GravitationClass 11Acceleration Due to Gravity

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1442014

Copper of fixed volume 'V; is drawn into a wire of length 'l'. When this wire is subjected to a constant force 'F', the extension produced in the wire is ' $\Delta$ l'. Which of the following graphs is a straight line?

Medium NEET 2014Properties Of Solids And LiquidsClass 11Elastic Behaviour and Young's Modulus

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1452014

A certain number of spherical drops of a liquid of radius 'r' coalesce to form a single drop of radius 'R' and volume 'V'. If 'T' is the surface tension of the liquid, then:

Medium NEET 2014Properties Of Solids And LiquidsClass 11Surface Tension

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1462014

Steam at $100^{\circ}\mathrm{C}$ is passed into $20\,\mathrm{g}$ of water at $10^{\circ}\mathrm{C}$ . When the water acquires a temperature of $80^{\circ}\mathrm{C}$ , the mass of water present will be: (Take specific heat of water $= 1\,\mathrm{cal\,g^{-1}\,^{\circ}C^{-1}}$ and latent heat of steam $= 540\,\mathrm{cal\,g^{-1}}$ )

Medium NEET 2014ThermodynamicsClass 11Calorimetry and Latent Heat

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1472014

A quantity of water cools from $70^{\circ}\mathrm{C}$ to $60^{\circ}\mathrm{C}$ in the first $5$ minutes and to $54^{\circ}\mathrm{C}$ in the next $5$ minutes. The temperature of the surroundings is:

Hard NEET 2014ThermodynamicsClass 11Newton's Law of Cooling

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1482014

A monoatomic gas at a pressure $P$ , having a volume $V$ expands isothermally to a volume $2V$ and then adiabatically to a volume $16V$ . The final pressure of the gas is: (Take $\gamma = \dfrac{5}{3}$ )

Hard NEET 2014ThermodynamicsClass 11Isothermal and Adiabatic Processes

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1492014

A thermodynamic system undergoes the cyclic process $ABCDA$ as shown in the figure. The work done by the system in the cycle is:

Hard NEET 2014ThermodynamicsClass 11Work Done in Cyclic Processes

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1502014

The mean free path of molecules of a gas, (radius 'r') is inversely proportional to:

Easy NEET 2014Kinetic TheoryClass 11Mean Free Path

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1512014

If $n_1$ , $n_2$ and $n_3$ are the fundamental frequencies of three segments into which a string is divided, then the original fundamental frequency $n$ of the string is given by:

Medium NEET 2014Oscillations and WavesClass 11Standing Waves in Strings

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1522014

The number of possible natural oscillations of an air column in a pipe closed at one end of length $85\,\text{cm}$ whose frequencies lie below $1250\,\text{Hz}$ are: (velocity of sound = 340 ms⁻¹)

Medium NEET 2014Oscillations and WavesClass 11Standing Waves in Organ Pipes

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1532014

A speeding motorcyclist sees traffic jam ahead of him. He slows down to 36 km/hour. He finds that traffic has eased and a car moving ahead of him at 18 km/hour is honking at a frequency of 1392 Hz. If the speed of sound is 343 m/s, the frequency of the horn as heard by him will be:

Medium NEET 2014Oscillations and WavesClass 11Doppler Effect

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1542014

Two thin dielectric slabs of dielectric constants $K_1$ and $K_2$ ( $K_1 < K_2$ ) are inserted between the plates of a parallel plate capacitor as shown in the figure. The variation of electric field 'E' between the plates with distance 'd' as measured from plate $P$ is correctly shown by:

Hard NEET 2014Electric Charges and FieldsClass 12Dielectrics and Capacitors

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1552014

A conducting sphere of radius $R$ is given a charge $Q$ . The electric potential and the electric field at the centre of the sphere respectively are:

Easy NEET 2014Electric Charges and FieldsClass 12Electric Potential and Conductors

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1562014

In a region, the potential is represented by V(x, y, z) = 6x - 8xy - 8y + 6yz where V is in volts and $x$ , $y$ , $z$ are in metres. The electric force experienced by a charge of 2 coulomb situated at the point $(1, 1, 1)$ is:

Medium NEET 2014Electric Charges and FieldsClass 12Electric Field and Electric Potential

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1572014

Two cities are $150\,\mathrm{km}$ apart. Electric power is sent from one city to another through copper wires. The fall of potential per kilometre is $8\,\mathrm{V}$ and the average resistance per kilometre is $0.5\,\Omega$ . The power loss in the wires is:

Easy NEET 2014Current ElectricityClass 12Electrical Energy and Power

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1582014

The resistance in the two arms of the meter bridge are 5Ω and RΩ, respectively. When the resistance R is shunted with an equal resistance, the new balance point is at 1.6 ℓ₁. The resistance R is:

Medium NEET 2014Current ElectricityClass 12Metre Bridge

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1592014

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery used across the potentiometer wire has an emf of 2.0 V and negligible internal resistance. The potentiometer wire itself is 4m long. When the resistance R connected across the given cell has values of (i) infinity (ii) 9.5 Ω, the balancing lengths on the potentiometer wire are found to be 3 m and 2.85 m, respectively. The value of the internal resistance of the cell is:

Medium NEET 2014Current ElectricityClass 12Potentiometer and Internal Resistance of a Cell

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1602014

Following figures show the arrangement of bar magnets in different configurations. Each magnet has magnetic dipole moment $\vec{m}$ . Which configuration has highest net magnetic dipole moment?

Medium NEET 2014Moving Charges and MagnetismClass 12Magnetic Dipole Moment

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1612014

In an ammeter 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be:

Medium NEET 2014Moving Charges and MagnetismClass 12Moving Coil Galvanometer and Ammeter Conversion

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1622014

Two identical long conducting wires AOB and COD are placed at right angles to each other, with one above the other such that O is their common point. The wires carry currents I₁ and I₂ respectively. Point P lies at a distance d from O along a direction perpendicular to the plane containing the wires. The magnetic field at point P will be:

Medium NEET 2014Moving Charges and MagnetismClass 12Magnetic Field Due to a Long Straight Current-Carrying Conductor

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1632014

A thin semicircular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field B, as shown in the figure. The potential difference developed across the ring when its speed is v, is:

Medium NEET 2014Electromagnetic InductionClass 12Motional EMF

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1642014

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6A, the voltage across the secondary coil and the current in the primary coil are respectively:

Easy NEET 2014Electromagnetic InductionClass 12Transformer Efficiency

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1652014

Light with an energy flux of 25 × 10⁴ W m⁻² falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm², the average force exerted on the surface is:

Easy NEET 2014Dual Nature of Radiation and MatterClass 12Radiation Pressure

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1662014

A beam of light of λ = 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance between first dark fringes on either side of the central bright fringe is:

Medium NEET 2014OpticsClass 12Single Slit Diffraction

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1672014

In the Young's double-slit experiment, the intensity of light at a point on the screen where the path difference is λ is K, λ being the wavelength of light used. The intensity at a point where the path difference is λ/4 will be:

Easy NEET 2014OpticsClass 12Young's Double Slit Experiment

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1682014

If the focal length of objective lens is increased, then magnifying power of:

Easy NEET 2014OpticsClass 12Microscope and Telescope

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1692014

The angle of a prism is A. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface return back through the same path after suffering reflection at the silvered surface. The refractive index μ of the prism is:

Hard NEET 2014OpticsClass 12Refraction Through a Prism

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1702014

When the energy of the incident radiation is increased by 20%, the kinetic energy of the photoelectrons emitted from a metal surface increases from 0.5 eV to 0.8 eV. The work function of the metal is:

Medium NEET 2014Dual Nature of Radiation and MatterClass 12Photoelectric Effect and Einstein Equation

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1712014

If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is:

Easy NEET 2014Dual Nature of Radiation and MatterClass 12de Broglie Wavelength

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1722014

Hydrogen atom in ground state is excited by a monochromatic radiation of λ = 975 Å. Number of spectral lines in the resulting spectrum emitted will be:

Medium NEET 2014Atoms And NucleiClass 12Hydrogen Spectrum and Energy Levels

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1732014

The binding energy per nucleon of ⁷₃Li and ⁴₂He nuclei are 5.60 MeV and 7.06 MeV, respectively. In the nuclear reaction ⁷₃Li + ¹₁H → ⁴₂He + Q, the value of energy Q released is:

Medium NEET 2014Atoms And NucleiClass 12Binding Energy and Nuclear Reactions

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1742014

A radio isotope X with a half-life 1.4 × 10⁹ years decays to Y which is stable. A sample of the rock from a cave was found to contain X and Y in the ratio 1 : 7. The age of the rock is:

Medium NEET 2014Atoms And NucleiClass 12Radioactivity and Half-Life

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1752014

The given graph represents V-I characteristic for a semiconductor device. Which of the following statement is correct?

Medium NEET 2014Semiconductor ElectronicsClass 12Solar Cell Characteristics

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1762014

The barrier potential of a p-n junction depends on: (a) type of semiconductor material (b) amount of doping (c) temperature. Which one of the following is correct?

Easy NEET 2014Semiconductor ElectronicsClass 12P-N Junction Diode

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1772014

What is the maximum number of orbitals that can be identified with the following quantum numbers? n = 3, ℓ = 1, m $_ℓ$ = 0

Easy NEET 2014Atoms And NucleiClass 12Quantum Numbers and Atomic Orbitals

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1782014

Calculate the energy in joule corresponding to light of wavelength 45 nm. (Planck's constant h = 6.63 × 10⁻³⁴ Js; speed of light c = 3 × 10⁸ ms⁻¹)

Easy NEET 2014Dual Nature of Radiation and MatterClass 12Photon Energy

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1792014

Equal masses of H₂, O₂ and methane have been taken in container of volume V at temperature 27°C under identical conditions. The ratio of the volumes of gases H₂ : O₂ : methane would be:

Easy NEET 2014Units and MeasurementsClass 11Mole Concept and Avogadro's Hypothesis

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1802014

If a is the length of the side of a cube, the distance between the body centered atom and one corner of the cube will be:

Easy NEET 2014System of Particles and Rotational MotionClass 11Centre of Mass of a Rigid Body

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