AIPMT 2006 · Chemistry

AIPMT 2006 Chemistry Questions with Solutions

The AIPMT 2006 paper had 51 Chemistry questions from 19 chapters.

Chemical Bonding and Molecular Structure had the most questions (7), followed by The d- and f-Block Elements with 5.

3 questions below have the answer and explanation free; the other 48 are in Premium.

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Chemistry questions: 51
Chapters covered: 19
Solved free here: 3 of 51
Easy / Medium / Hard: 14 / 30 / 7

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Chapter-wise: AIPMT 2006 Chemistry

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All 51 AIPMT 2006 Chemistry questions

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Question 1 (AIPMT 2006, Q1)
ElectrochemistryMedium
In producing chlorine through electrolysis, 100 W power at 125 V is being consumed. How much chlorine per minute is liberated? ECE of chlorine is 0.367 × 10⁻⁶ kg/ C:
1. Option A: 17.6 mg
2. Option B: 34.3 mg
3. Option C: 24.3 mg
4. Option D: 39.6 mg
The answer and explanation for this question are in NEET MIND Premium.
Question 2 (AIPMT 2006, Q51)
ThermodynamicsEasy
Identify the correct statement for change of Gibbs energy for a system (ΔGₛᵧₛₜₑₘ) at constant temperature and pressure:
1. Option A: If ΔGₛᵧₛₜₑₘ > 0, the process is spontaneous
2. Option B: If ΔGₛᵧₛₜₑₘ = 0, the system has attained equilibrium
3. Option C: If ΔGₛᵧₛₜₑₘ = 0, the system is still moving in a particular direction
4. Option D: If ΔGₛᵧₛₜₑₘ < 0, the process is not spontaneous
The answer and explanation for this question are in NEET MIND Premium.
Question 3 (AIPMT 2006, Q52)
SolutionsMedium
A solution containing 10 g per dm³ of urea (molecular mass = 60 g mol⁻¹) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of this non-volatile solute is:
1. Option A: 200 g mol⁻¹
2. Option B: 300 g mol⁻¹
3. Option C: 400 g mol⁻¹
4. Option D: 500 g mol⁻¹
The answer and explanation for this question are in NEET MIND Premium.
Question 4 (AIPMT 2006, Q53)
Surface ChemistryEasy
A plot of log(x/m) versus log p for the adsorption of a gas on a solid gives a straight line with slope equal to:
1. Option A: -log k
2. Option B: n
3. Option C: 1/n
4. Option D: log k
Show answer & explanationHide answer & explanation
Correct answer: (C) 1/n
Explanation
Freundlich adsorption isotherm is x/m = kp^(1/n). Taking logarithm, log(x/m) = log k + (1/n) log p. Thus the slope of the graph of log(x/m) versus log p is 1/n. Hence option (C) is correct.
Question 5 (AIPMT 2006, Q54)
ThermodynamicsMedium
Assume each reaction is carried out in an open container. For which reaction will ΔH = ΔE?
1. Option A: H₂(g) + Br₂(g) → 2HBr(g)
2. Option B: C(s) + 2H₂O(g) → 2H₂(g) + CO₂(g)
3. Option C: PCl₅(g) → PCl₃(g) + Cl₂(g)
4. Option D: 2CO(g) + O₂(g) → 2CO₂(g)
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Question 6 (AIPMT 2006, Q55)
Organic Chemistry: Some Basic Principles and TechniquesMedium
In a set of reactions, propionic acid yielded a compound D. The structure of D would be:
1. Option A: CH₃CH₂CH₂NH₂
2. Option B: CH₃CH₂CONH₂
3. Option C: CH₃CH₂NHCH₃
4. Option D: CH₃CH₂NH₂
The answer and explanation for this question are in NEET MIND Premium.
Question 7 (AIPMT 2006, Q56)
BiomoleculesEasy
During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process are respectively:
1. Option A: Amylase and maltase
2. Option B: Diastase and lipase
3. Option C: Pepsin and trypsin
4. Option D: Invertase and zymase
The answer and explanation for this question are in NEET MIND Premium.
Question 8 (AIPMT 2006, Q57)
BiomoleculesEasy
The human body does not produce:
1. Option A: DNA
2. Option B: Vitamins
3. Option C: Hormones
4. Option D: Enzymes
The answer and explanation for this question are in NEET MIND Premium.
Question 9 (AIPMT 2006, Q58)
Solid StateMedium
CsBr crystallises in a body centred cubic lattice. The unit cell length is 436.6 pm. Given that the atomic mass of Cs = 133 and that of Br = 80 amu and Avogadro number being 6.02 × 10²³ mol⁻¹, the density of CsBr is:
1. Option A: 42.5 g cm⁻³
2. Option B: 2.25 g cm⁻³
3. Option C: 0.225 g cm⁻³
4. Option D: 4.25 g cm⁻³
The answer and explanation for this question are in NEET MIND Premium.
Question 10 (AIPMT 2006, Q59)
The d- and f-Block ElementsMedium
More number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is:
1. Option A: More energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals
2. Option B: Lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals
3. Option C: Greater metallic character of the lanthanoids than that of the corresponding actinoids
4. Option D: More active nature of the actinoids
The answer and explanation for this question are in NEET MIND Premium.
Question 11 (AIPMT 2006, Q60)
Structure of AtomHard
Given: The mass of electron is 9.11 × 10⁻³¹ kg and Planck constant is 6.626 × 10⁻³⁴ Js. The uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:
1. Option A: 5.79 × 10⁶ ms⁻¹
2. Option B: 5.79 × 10⁷ ms⁻¹
3. Option C: 5.79 × 10⁸ ms⁻¹
4. Option D: 5.79 × 10⁹ ms⁻¹
The answer and explanation for this question are in NEET MIND Premium.
Question 12 (AIPMT 2006, Q61)
Coordination CompoundsMedium
Copper sulphate dissolves in excess of KCN to give:
1. Option A: CuCN
2. Option B: [Cu(CN)₄]³⁻
3. Option C: [Cu(CN)₄]²⁻
4. Option D: Cu(CN)₂
The answer and explanation for this question are in NEET MIND Premium.
Question 13 (AIPMT 2006, Q62)
The d- and f-Block ElementsMedium
In which of the following pairs are both the ions coloured in aqueous solution? (At. no.: Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)
1. Option A: Ni²⁺, Ti³⁺
2. Option B: Sc³⁺, Ti³⁺
3. Option C: Sc³⁺, Co²⁺
4. Option D: Ni²⁺, Cu⁺
The answer and explanation for this question are in NEET MIND Premium.
Question 14 (AIPMT 2006, Q63)
The d- and f-Block ElementsMedium
Al₂O₃ can be converted to anhydrous AlCl₃ by heating:
1. Option A: Al₂O₃ with HCl gas
2. Option B: Al₂O₃ with NaCl in solid state
3. Option C: A mixture of Al₂O₃ and carbon in dry Cl₂ gas
4. Option D: Al₂O₃ with Cl₂ gas
The answer and explanation for this question are in NEET MIND Premium.
Question 15 (AIPMT 2006, Q64)
ThermodynamicsMedium
The enthalpy and entropy change for the reaction $Br₂(l) + Cl₂(g) → 2BrCl(g)$ are 30 kJ mol⁻¹ and 105 JK⁻¹ mol⁻¹ respectively. The temperature at which the reaction will be in equilibrium is:
1. Option A: 285.7 K
2. Option B: 373 K
3. Option C: 250 K
4. Option D: 400 K
The answer and explanation for this question are in NEET MIND Premium.
Question 16 (AIPMT 2006, Q65)
Solid StateEasy
The appearance of colour in solid alkali metal halides is generally due to:
1. Option A: F-centres
2. Option B: Schottky defect
3. Option C: Frenkel defect
4. Option D: Interstitial positions
The answer and explanation for this question are in NEET MIND Premium.
Question 17 (AIPMT 2006, Q66)
Alcohols, Phenols and EthersEasy
The general molecular formula which represents the homologous series of alkanols is:
1. Option A: CₙH₂ₙO₂
2. Option B: CₙH₂ₙO
3. Option C: CₙH₂ₙ₊₁O
4. Option D: CₙH₂ₙ₊₂O
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Question 18 (AIPMT 2006, Q67)
ElectrochemistryMedium
If E°Fe²⁺/Fe = -0.441 V and E°Fe³⁺/Fe²⁺ = 0.771 V, the standard emf of the reaction Fe + 2Fe³⁺ → 3Fe²⁺ will be:
1. Option A: 0.441 V
2. Option B: 1.753 V
3. Option C: 1.212 V
4. Option D: 0.211 V
The answer and explanation for this question are in NEET MIND Premium.
Question 19 (AIPMT 2006, Q68)
Chemical KineticsMedium
For the reaction 2A + B → 3C + D, which of the following does not express the reaction rate?
1. Option A: -(d[C]/3dt)
2. Option B: -d[B]/dt
3. Option C: d[D]/dt
4. Option D: -d[A]/2dt
The answer and explanation for this question are in NEET MIND Premium.
Question 20 (AIPMT 2006, Q69)
EquilibriumMedium
For the reaction CH₄(g) + 2O₂(g) ⇌ CO₂(g) + 2H₂O(l), ΔrH = -170.8 kJ mol⁻¹. Which of the following statements is not true?
1. Option A: At equilibrium, the concentrations of CO₂(g) and H₂O(l) are not equal
2. Option B: The equilibrium constant for the reaction is given by Kp = [CO₂]/([CH₄][O₂])
3. Option C: Addition of CH₄(g) or O₂(g) at equilibrium will cause a shift to the right
4. Option D: The reaction is exothermic
The answer and explanation for this question are in NEET MIND Premium.
Question 21 (AIPMT 2006, Q70)
PolymersEasy
[NH(CH₂)₆NHCO(CH₂)₄CO]ₙ is a:
1. Option A: Co-polymer
2. Option B: Addition polymer
3. Option C: Thermo-setting polymer
4. Option D: Homopolymer
Show answer & explanationHide answer & explanation
Correct answer: (A) Co-polymer
Explanation
The repeating unit corresponds to nylon-6,6 formed by condensation of hexamethylenediamine and adipic acid. Since it is formed from two different monomers, it is a copolymer. Hence option (A) is correct.
Question 22 (AIPMT 2006, Q71)
Aldehydes, Ketones and Carboxylic AcidsMedium
A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is:
1. Option A: Acetaldehyde
2. Option B: Acetone
3. Option C: Diethyl ketone
4. Option D: Formaldehyde
The answer and explanation for this question are in NEET MIND Premium.
Question 23 (AIPMT 2006, Q72)
BiomoleculesEasy
Which one of the following is a peptide hormone?
1. Option A: Glucagon
2. Option B: Testosterone
3. Option C: Thyroxin
4. Option D: Adrenaline
The answer and explanation for this question are in NEET MIND Premium.
Question 24 (AIPMT 2006, Q73)
Haloalkanes and HaloarenesMedium
The major organic product in the reaction CH₃–O–CH(CH₃)₂ + HI → Product is:
1. Option A: CH₃OH + (CH₃)₂CHI
2. Option B: ICH₂OCH(CH₃)₂
3. Option C: (CH₃)₂C(I)OCH₃
4. Option D: CH₃I + (CH₃)₂CHOH
The answer and explanation for this question are in NEET MIND Premium.
Question 25 (AIPMT 2006, Q74)
Aldehydes, Ketones and Carboxylic AcidsMedium
Nucleophilic addition reaction will be most favoured in:
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 26 (AIPMT 2006, Q75)
ThermodynamicsMedium
The enthalpy of combustion of H₂, cyclohexene (C₆H₁₀) and cyclohexane (C₆H₁₂) are -241, -3800 and -3920 kJ mol⁻¹ respectively. Heat of hydrogenation of cyclohexene is:
1. Option A: -121 kJ mol⁻¹
2. Option B: +121 kJ mol⁻¹
3. Option C: +484 kJ mol⁻¹
4. Option D: -484 kJ mol⁻¹
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Question 27 (AIPMT 2006, Q76)
Aldehydes, Ketones and Carboxylic AcidsMedium
Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields:
1. Option A: Ethyl butyrate
2. Option B: Acetoacetic ester
3. Option C: Methyl acetoacetate
4. Option D: Ethyl propionate
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Question 28 (AIPMT 2006, Q77)
Chemical KineticsEasy
Consider the reaction N₂(g) + 3H₂(g) → 2NH₃(g). The equality relationship between (d[NH₃]/dt) and -(d[H₂]/dt) is:
1. Option A: (d[NH₃]/dt) = -(1/3)(d[H₂]/dt)
2. Option B: (d[NH₃]/dt) = -(2/3)(d[H₂]/dt)
3. Option C: (d[NH₃]/dt) = -(3/2)(d[H₂]/dt)
4. Option D: (d[NH₃]/dt) = -(d[H₂]/dt)
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Question 29 (AIPMT 2006, Q78)
Organic Chemistry: Some Basic Principles and TechniquesMedium
Which of the following is not chiral?
1. Option A: 2-butanol
2. Option B: 2,3-dibromopentane
3. Option C: 3-bromopentane
4. Option D: 2-hydroxypropanoic acid
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Question 30 (AIPMT 2006, Q79)
Coordination CompoundsHard
[Co(NH₃)₄(NO₂)₂]Cl exhibits:
1. Option A: Linkage isomerism, ionization isomerism and optical isomerism
2. Option B: Linkage isomerism, ionization isomerism and geometrical isomerism
3. Option C: Ionization isomerism, geometrical isomerism and optical isomerism
4. Option D: Linkage isomerism, geometrical isomerism and optical isomerism
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Question 31 (AIPMT 2006, Q80)
Coordination CompoundsHard
[Cr(H₂O)₆]Cl₃ (at. no. of Cr = 24) has a magnetic moment of 3.83 BM. The correct distribution of 3d electrons in the chromium of the complex is:
1. Option A: Option (1)
2. Option B: Option (2)
3. Option C: Option (3)
4. Option D: Option (4)
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Question 32 (AIPMT 2006, Q81)
SolutionsMedium
1.00 g of a non-electrolyte solute (molar mass 250 g mol⁻¹) was dissolved in 51.2 g of benzene. If the freezing point depression constant, K $_f$ of benzene is 5.12 K kg mol⁻¹, the freezing point of benzene will be lowered by:
1. Option A: 0.4 K
2. Option B: 0.8 K
3. Option C: 0.12 K
4. Option D: 0.24 K
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Question 33 (AIPMT 2006, Q82)
EquilibriumEasy
Which of the following pairs constitutes a buffer?
1. Option A: HNO₂ and NaNO₂
2. Option B: NaOH and NaCl
3. Option C: HNO₃ and NH₄NO₃
4. Option D: HCl and KCl
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Question 34 (AIPMT 2006, Q83)
EquilibriumHard
The hydrogen ion concentration of a 10⁻⁸ M HCl aqueous solution at 298 K (K $_w$ = 10⁻¹⁴) is:
1. Option A: 1.0525 × 10⁻⁶ M
2. Option B: 1.0525 × 10⁻⁷ M
3. Option C: 8.525 × 10⁻⁸ M
4. Option D: 1.0525 × 10⁻⁸ M
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Question 35 (AIPMT 2006, Q84)
SolutionsMedium
A solution of acetone in ethanol:
1. Option A: Shows a negative deviation from Raoult's law
2. Option B: Shows a positive deviation from Raoult's law
3. Option C: Behaves like a near ideal solution
4. Option D: Obeys Raoult's law
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Question 36 (AIPMT 2006, Q85)
ElectrochemistryHard
A hypothetical electrochemical cell is shown below: A|A⁺(xM)||B⁺(yM)|B The emf measured is +0.20 V. The cell reaction is:
1. Option A: A⁺ + B → A + B⁺
2. Option B: A⁺ + e⁻ → A; B⁺ + e⁻ → B
3. Option C: The cell reaction cannot be predicted
4. Option D: A + B⁺ → A⁺ + B
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Question 37 (AIPMT 2006, Q86)
Alcohols, Phenols and EthersMedium
Ethylene oxide when treated with Grignard reagent yields:
1. Option A: Secondary alcohol
2. Option B: Tertiary alcohol
3. Option C: Cyclopropyl alcohol
4. Option D: Primary alcohol
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Question 38 (AIPMT 2006, Q87)
SolutionsEasy
During osmosis, flow of water through a semi-permeable membrane is:
1. Option A: From solution having higher concentration only
2. Option B: From both sides of semi-permeable membrane with equal flow rates
3. Option C: From both sides of semi-permeable membrane with unequal flow rates
4. Option D: From solution having lower concentration only
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Question 39 (AIPMT 2006, Q88)
AminesMedium
Which of the following is more basic than aniline?
1. Option A: Diphenylamine
2. Option B: Triphenylamine
3. Option C: p-Nitroaniline
4. Option D: Benzylamine
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Question 40 (AIPMT 2006, Q89)
Chemical Bonding and Molecular StructureMedium
In which of the following molecules are all the bonds not equal?
1. Option A: ClF₃
2. Option B: BF₃
3. Option C: AlF₃
4. Option D: NF₃
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Question 41 (AIPMT 2006, Q90)
Chemical Bonding and Molecular StructureHard
The electronegativity difference between N and F is greater than that between N and H, yet the dipole moment of NH₃ (1.5 D) is larger than that of NF₃ (0.2 D). This is because:
1. Option A: In NH₃ as well as in NF₃ the atomic dipole and bond dipole are in the same direction
2. Option B: In NH₃ the atomic dipole and bond dipole are in the same direction whereas in NF₃ these are in opposite directions
3. Option C: In NH₃ as well as NF₃ the atomic dipole and bond dipole are in opposite directions
4. Option D: In NH₃ the atomic dipole and bond dipole are in opposite directions whereas in NF₃ these are in the same directions
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Question 42 (AIPMT 2006, Q91)
S-Block ElementsMedium
The correct order of the mobility of the alkali metal ions in aqueous solution is:
1. Option A: Li⁺ > Na⁺ > K⁺ > Rb⁺
2. Option B: Na⁺ > K⁺ > Rb⁺ > Li⁺
3. Option C: K⁺ > Rb⁺ > Na⁺ > Li⁺
4. Option D: Rb⁺ > K⁺ > Na⁺ > Li⁺
Show answer & explanationHide answer & explanation
Correct answer: (D) Rb⁺ > K⁺ > Na⁺ > Li⁺
Explanation
Mobility depends on the hydrated ionic radius. Li⁺ is most heavily hydrated and therefore moves slowest. Hydration decreases down the group, so mobility increases: Rb⁺ > K⁺ > Na⁺ > Li⁺. Hence option (D) is correct.
Question 43 (AIPMT 2006, Q92)
Chemical Bonding and Molecular StructureEasy
The correct order regarding the electronegativity of hybrid orbitals of carbon is:
1. Option A: sp > sp² < sp³
2. Option B: sp > sp² > sp³
3. Option C: sp < sp² > sp³
4. Option D: sp < sp² < sp³
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Question 44 (AIPMT 2006, Q93)
Chemical Bonding and Molecular StructureEasy
Which of the following species has a linear shape?
1. Option A: NO₂⁻
2. Option B: SO₂
3. Option C: NO₂⁺
4. Option D: O₃
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Question 45 (AIPMT 2006, Q94)
The d- and f-Block ElementsMedium
Which of the following is the most basic oxide?
1. Option A: Al₂O₃
2. Option B: Sb₂O₃
3. Option C: Bi₂O₃
4. Option D: SeO₂
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Question 46 (AIPMT 2006, Q95)
Structure of AtomEasy
The orientation of an atomic orbital is governed by:
1. Option A: Azimuthal quantum number
2. Option B: Spin quantum number
3. Option C: Magnetic quantum number
4. Option D: Principal quantum number
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Question 47 (AIPMT 2006, Q96)
Chemical Bonding and Molecular StructureMedium
Which of the following is not a correct statement?
1. Option A: The electron-deficient molecules can act as Lewis acids
2. Option B: The canonical structures have no real existence
3. Option C: Every AB₅ molecule does in fact have square pyramidal structure
4. Option D: Multiple bonds are always shorter than corresponding single bonds
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Question 48 (AIPMT 2006, Q97)
Chemical Bonding and Molecular StructureMedium
The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic number 16 is:
1. Option A: 2
2. Option B: 3
3. Option C: 4
4. Option D: 1
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Question 49 (AIPMT 2006, Q98)
The d- and f-Block ElementsHard
Which one of the following orders is not in accordance with the property stated against it?
1. Option A: F₂ > Cl₂ > Br₂ > I₂ : Oxidising power
2. Option B: HI > HBr > HCl > HF : Acidic property in water
3. Option C: F₂ > Cl₂ > Br₂ > I₂ : Electronegativity
4. Option D: F₂ > Cl₂ > Br₂ > I₂ : Bond dissociation energy
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Question 50 (AIPMT 2006, Q99)
Chemical Bonding and Molecular StructureMedium
Which of the following is not isostructural with SiCl₄?
1. Option A: SCl₄
2. Option B: SO₄²⁻
3. Option C: PO₄³⁻
4. Option D: NH₄⁺
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Question 51 (AIPMT 2006, Q100)
Organic Chemistry: Some Basic Principles and TechniquesMedium
The IUPAC name of the following compound is:
1. Option A: 3,4-Dimethylpentanoyl chloride
2. Option B: 1-Chloro-1-oxo-2, 3-dimethylpentane
3. Option C: 2-Ethyl-3-methylbutanoyl chloride
4. Option D: 2, 3-Dimethylpentanoyl chloride
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