CUET-PG SERIES Chemistry
Hydrocarbons
23 previous year questions.
Volume: 23 Ques
Yield: High
High-Yield Trend
23
2023 Chapter Questions 23 MCQs
01
PYQ 2023
medium
chemistry ID: cuet-pg-
The relative order of stability of conformers of 1,3-dimethylcyclohexane is (equatorial - e, axial-a)
1
2
3
4
02
PYQ 2023
medium
chemistry ID: cuet-pg-
Which of the following compound represent the correct structure of (2R, 3S)-2,3-pentanediol?
1
2
3
4
03
PYQ 2023
easy
chemistry ID: cuet-pg-
Arachno and nido structure of Boranes have general formula respectively
04
PYQ 2023
easy
chemistry ID: cuet-pg-
Phenylbenzoate can be prepared from phenol using which of the following name reaction?
05
PYQ 2023
easy
chemistry ID: cuet-pg-
The structure of a carborane, , is
06
PYQ 2023
easy
chemistry ID: cuet-pg-
Match List I with List II:
List I (Reaction) List II (Mettalo enzyme)
(A) (I) Cytochrome P-450
(B) (II) Catalase
(C) e-transfer protein (III) Ferredoxin
(D) (IV) Cytochrome (oxidase)
Choose the correct answer from the options given below:
List I (Reaction) List II (Mettalo enzyme)
(A) (I) Cytochrome P-450
(B) (II) Catalase
(C) e-transfer protein (III) Ferredoxin
(D) (IV) Cytochrome (oxidase)
Choose the correct answer from the options given below:
07
PYQ 2023
medium
chemistry ID: cuet-pg-
Identify the major product in the following reaction
1
2
3
4
08
PYQ 2023
easy
chemistry ID: cuet-pg-
Deduce the structure of the product in the following reaction
09
PYQ 2023
easy
chemistry ID: cuet-pg-
Identify the major product in the following reaction.
10
PYQ 2023
easy
chemistry ID: cuet-pg-
Identify the major product in the following reaction.
11
PYQ 2023
easy
chemistry ID: cuet-pg-
The following reaction undergoes via _________ and is known as ______ reaction.
12
PYQ 2023
easy
chemistry ID: cuet-pg-
Choose the correct product formed in the following reaction
13
PYQ 2023
medium
chemistry ID: cuet-pg-
Match List I with List II
Choose the correct answer from the options given below:
| List I | List II | ||
| A. | Carbonyl compounds react with ylide to form alkene. | I. | Cannizzaro Reaction |
| B. | Ketone reacts with zinc-mercury amalgam in HCl as reducing agent to form alkane. | II. | Clemmensen Reduction |
| C. | Carbonyl compounds react with basic solution of hydrazine as reducing agent to produce alkane. | III. | Wittig Reaction |
| D. | Formaldehyde react with NaOH to form methanol. | IV. | Wolf-Kishner Reduction |
1
A-IV, B-III, C-II, D-I
2
A-IV, B-II, C-I, D-III
3
A-III, B-II, C-IV, D-I
4
A-I, B-II, C-III, D-IV
14
PYQ 2023
medium
chemistry ID: cuet-pg-
The bond enthalpies for C-H, C1-C1, C-C1 and H-Cl are 99, 58, 78 and 103 kcal/mol respectively. What will be the AH for the reaction
CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g)
CH4(g) + Cl2(g) → CH3Cl(g) + HCl(g)
1
-24 kcal
2
26 kcal
3
-23 kcal
4
-32 kcal
15
PYQ 2023
medium
chemistry ID: cuet-pg-
Identify the major product in the following reaction
1
2
3
4
16
PYQ 2023
easy
chemistry ID: cuet-pg-
Which of the following compound is ionic in nature and soluble in water?
1
1-Bromocyclohepta-2.4.6-triene
2
3-Bromohepta-2,4,6-triene
3
3-Bromopenta-1,4-diene
4
1-Bromocyclopenta-2,4-diene
17
PYQ 2023
medium
chemistry ID: cuet-pg-
In nonpolar aprotic solvent which of the following will act as strongest base?
1
2
3
4
18
PYQ 2023
medium
chemistry ID: cuet-pg-
Predict the major product in the following reaction.
1
2,4-Dinitrophenol
2
1,3-Dinitrobenzene
3
3,5-Dinitrophenol
4
2,4,6-Trinitrophenol
19
PYQ 2023
easy
chemistry ID: cuet-pg-
Which of the following are acetals ?
1
I and II
2
III and IV
3
I and III
4
I and IV
20
PYQ 2023
medium
chemistry ID: cuet-pg-
Treatment of 1-Methylcyclohexene with an ether solution of diborane (B2H6), followed by reaction with alkaline H2O2 produces which of the following product ?
1
1-Methylcyclohexanol
2
cis-1-Methylcyclohexane-1,2-diol
3
cis-2-Methylcyclohexanol
4
trans-1-Methylcyclohexane-1,2-diol
21
PYQ 2023
medium
chemistry ID: cuet-pg-
At 20°C pure water requires 102.2 seconds to flow through the capillary of an Ostwald Viscometer while toluene at 20°C requires 68.9 seconds. Calculate the relative viscocity of the toluene. Densities of water and toluene are 0.998 and 0.866 g cm-3 respectively.
1
1.709 poise
2
0.585 poise
3
1.287 poise
4
1.170 poise
22
PYQ 2023
medium
chemistry ID: cuet-pg-
Which of the following statement is not correct regarding five membered heterocyclic compounds?
1
Furan is least aromatic in nature among furan, thiophene and pyrrole.
2
Thiophene can have more number of canonical structures using 3d-orbitals.
3
Pyrrole has maximum double bond character among furan, thiophene and pyrrole.
4
Furan. thiophene and pyrrole can be synthesized using Paal-Knorr synthesis.
23
PYQ 2023
medium
chemistry ID: cuet-pg-
A nitrogen containing compound dissolves in 10% aq. sulphuric acid. The Hinsberg test gives a solid product that is not soluble in 10% aq. NaOH. Which one of the following compounds best fits the above facts?
1
N,N-Dimethylaniline
2
N-Methylbenzamide
3
N-Methylaniline
4
Benzylamine
About Hydrocarbons - CUET-PG
Hydrocarbons is a vital chapter for CUET-PG aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Hydrocarbons PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Hydrocarbons carry the most weight. Then, tackle the questions iteratively to solidify your understanding.