Hydrocarbons PYQs

The number of chlorine atoms present in the organic products X and Y of the following reactions, respectively, are:

Predict the major product 'P' in the following sequence of reactions:

Which one of the following reactions does NOT give benzene as the product?

How many products (including stereoisomers) are expected from monochlorination of the following compound?

Which one of the following compounds does not decolourize bromine water?

Given below are two statements: Statement I : The boiling point of three isomeric pentanes follows the order n-pentane > isopentane > neopentane Statement II : When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point. In the light of the above statements, choose the most appropriate answer from the options given below:

Identify the correct reagents that would bring about the following transformation.

A compound with a molecular formula of C₆H₁₄ has two tertiary carbons. Its IUPAC name is:

For the given reaction:

Which amongst the following molecules on polymerization produces neoprene?

Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is:

Compound X on reaction with O₃ followed by Zn/H₂O gives formaldehyde and 2-methyl propanal as products. The compound X is:

The correct structure of 2,6-Dimethyl-dec-4-ene is:

The major product of the following chemical reaction is:

Dihedral angle of least stable conformer of ethane is:

Consider the following reaction and identify the missing reagent/chemical: $$\mathrm{CH_3CH_2COO^-Na^+ \xrightarrow[Heat]{NaOH,\ ?} CH_3CH_3 + Na_2CO_3}$$ Identify the missing reagent.

The intermediate compound 'X' in the following chemical reaction is:

Identify compound X in the following sequence of reactions.Identify compound X in the following sequence of reactions.

An alkene on ozonolysis gives methanal as one of the products. Its structure is:

Which of the following alkane cannot be made in good yield by Wurtz reaction?

The polymer that is used as a substitute for wool in making commercial fibres is

Match the catalyst with the process. Which of the following is the correct option?

The alkane that gives only one mono-chloro product on chlorination with $Cl_2$ in presence of diffused sunlight is

In the following reaction, The number of sigma $(\sigma)$ bonds present in the product $A$ is:

Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is

The compound C₇H₈ undergoes the following reactions: The product 'C' is

Identify the major products P, Q and R in the following sequence of reactions:

Predict the correct intermediate and product in the following reaction:

Which one is the correct order of acidity?

Which of the following compounds shall not produce propene by reaction with HBr followed by elimination reaction?

In the given reaction, the product $P$ is:

The correct structure of the product A formed in the reaction is:

The compound that will react most readily with gaseous bromine has the formula:

2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule, to give a product 1-chloro-1-methylcyclohexane. The possible alkene is:

The oxidation of benzene by $\mathrm{V_2O_5}$ in the presence of air produces:

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

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

Nitrobenzene on reaction with concentrated $HNO_3/H_2SO_4$ at $80–100^\circ C$ forms which one of the following products?

Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

Which of the following compounds will not undergo Friedel-Crafts reaction easily?

Which one of the following reagents will be able to distinguish between 1-butyne and 2-butyne?

The IUPAC name of the following compound is:

The IUPAC name of the compound $$CH_3CH=CHC\equiv CH$$ is :

In the following reaction, $$C_6H_5CH_2Br \xrightarrow[2.H_3O^+]{1.Mg/Ether} X$$ The product 'X' is :

Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

Benzene reacts with $CH_3Cl$ in the presence of anhydrous $AlCl_3$ to form:

Nitrobenzene can be prepared from benzene by using a mixture of concentrated $HNO_3$ and concentrated $H_2SO_4$. In the mixture, nitric acid acts as a/an:

Trichloroacetaldehyde $(CCl_3CHO)$ reacts with chlorobenzene in presence of sulphuric acid and produces:

Consider the following reaction: The product $Z$ is:

What volume of oxygen gas (O₂) measured at 0°C and 1 atm is needed to burn completely 1 L of propane gas (C₃H₈) measured under the same conditions?

A (predominantly) is

Which one of the following is most reactive towards electrophilic attack?

Identify the reagent required for the conversion:

An alkene C₄H₈ reacts with HBr both in the presence and absence of peroxides to give the same product. Identify the alkene.

An alcohol having molecular formula C₄H₁₀O is produced on hydration of an alkene with H₂O/H₂SO₄ and is not resolvable into optical isomers. Identify the compound.

Which of the following reacts more readily with Br₂ in CS₂ and why?

Why does 1-butyne give a sodium salt with NaNH₂, whereas 2-butyne does not?

Products of the following reaction:

Which one of the following alkenes will react fastest with $H_2$ under catalytic hydrogenation conditions? (R = Alkyl substituent)