Home >> Topics >> Hydrocarbons
Questions Not AttemptedQuestions Attempted
Unattempted Questions
Questions Available: 22
Year: 2025
Topic: Hydrocarbons
1.
Which one of the following reactions does NOT give benzene as the product ?
(1).
(2).
(3).
(4).

Test
Solution
Year: 2021
Topic: Hydrocarbons
2.
The product formed from the following chemical reaction is
(1).
(2).
(3).
(4).

Test
Solution
Year: 2019
Topic: Hydrocarbons
3.
Which of the following diatomic molecular species has only π bonds according of Molecular Orbital Theory ?
(1).
N2
(2).
C2
(3).
Be2
(4).
O3

Test
Solution
Year: 2019
Topic: Hydrocarbons
4.
An alkene ‘A’ on reaction with O3 and Zn-H2O gives propanone and ethanal in equimolar and ratio. Addition of HCl to alkene ‘A’ gives ‘B’ as the major product. The structure of product ‘B’ is
(1).
(2).
(3).
(4).

Test
Solution
Year: 2025
Topic: Hydrocarbons
5.
Match List I with List II

Choose the correct answer from the options given below :
(1).
A-II, B-IV, C-II, D-I
(2).
A-IV, B-III, С-I, D-II
(3).
A-IV, B-III, C-II, D-I
(4).
A-III, B-IV, C-I, D-II

Test
Solution
Year: 2025
Topic: Hydrocarbons
6.
Which one of the following compounds does not decolourize bromine water?
(1).
(2).
(3).
(4).

Test
Solution
Year: 2025
Topic: Hydrocarbons
7.
How many products (including stereo isomers) are expected from monochlorination of the following compound?
(1).
6
(2).
2
(3).
3
(4).
5

Test
Solution
Year: 2025
Topic: Hydrocarbons
8.
predict the major product 'P' in the following sequence of reactions -
(1).
(2).
(3).
(4).

Test
Solution
Year: 2024
Topic: Hydrocarbons
9.
Match List-I with List-II:
(1).
A-IV, B-I, C-II, D-III
(2).
A-I, B-IV, C-II, D-III
(3).
A-IV, B-I, C-III, D-II
(4).
A-III, B-I, C-II, D-IV

Test
Solution
Year: 2024
Topic: Hydrocarbons
10.
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 form the options given below
(1).
Statement I is correct but Statement II is incorrect
(2).
Statement I is incorrect but Statement II is correct
(3).
Both Statement I and Statement II are correct
(4).
Both Statement I and Statement II are incorrect

Test
Solution
Year: 2024
Topic: Hydrocarbons
11.
Identify the correct reagents that would bring about the following transformation.
(1).
(2).
(3).
(4).

Test
Solution
Year: 2024
Topic: Hydrocarbons
12.
A compound with a molecular formula of \(\text{C}_6\text{H}_{14}\) has two tertiary carbons. Its IUPAC name is:
(1).
2,3-dimethylbutane
(2).
2,2-dimethylybutane
(3).
n-hexane
(4).
2-methylpentane

Test
Solution
Year: 2023
Topic: Hydrocarbons
13.
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:
(1).
32
(2).
30
(3).
18
(4).
16

Test
Solution
Year: 2021
Topic: Hydrocarbons
14.
The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on?
(1).
Saytzeff's Rule
(2).
Hund's Rule
(3).
Hoffmann Rule
(4).
Huckel's Rule

Test
Solution
Year: 2021
Topic: Hydrocarbons
15.
The major product of the following chemical reaction is:
(1).
(2).
(3).
(4).

Test
Solution
Year: 2021
Topic: Hydrocarbons
16.
Match List-I with List-II

Choose the correct answer from the options given below.
(1).
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
(2).
(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
(3).
(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
(4).
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

Test
Solution
Year: 2019
Topic: Hydrocarbons
17.
The most suitable reagent for the following conversion is
(1).
H2, Pd/C, quinoline
(2).
Zn/HCl
(3).
Hg2+/H+, H2O
(4).
Na/Liquid NH3

Test
Solution
Year: 2019
Topic: Hydrocarbons
18.
Among the following, the reaction that proceeds through an electrophilic substitution, is
(1).
(2).
(3).
(4).

Test
Solution
Year: 2018
Topic: Hydrocarbons
19.
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
(1).
CH4
(2).
CH3 – CH3
(3).
CH2 = CH2
(4).
CH ≡ CH

Test
Solution
Year: 2017
Topic: Hydrocarbons
20.
Predict the correct intermediate and product in the following reaction
(1).
(2).
(3).
(4).

Test
Solution
Year: 2017
Topic: Hydrocarbons
21.
Which one is the correct order of acidity ?
(1).
CH3 – CH3 > CH2 = CH2 > CH3 –C ≡ CH > CH ≡ CH
(2).
CH2 = CH2 > CH3 – CH = CH2 > CH3 – C ≡ CH
(3).
CH ≡ CH > CH3 – C ≡ CH > CH2 = CH2 > CH3 – - CH3
(4).
CH ≡ CH > CH2 = CH2 > CH3 – C ≡ CH > CH3 – CH3

Test
Solution
Year: 2016
Topic: Hydrocarbons
22.
In the reaction,
(1).
X = 2-butyne ; Y = 3-hexyne
(2).
X = 2-butyne ; Y = 2-hexyne
(3).
X = 1-butyne ; Y = 2-hexyne
(4).
X = 1-butyne ; Y = 3-hexyne

Test
Solution