300+ TOP MCQs on Alkane and Answers

NEET  Chemistry is the very imporatant paper in the Medical Entrance EXAM. So these NEET Chemistry MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Chemistry objective questions on air pollution. NEET Chemistry Alkane Multiple Choice Questions

MCQs on Alkane :

1. Which of the following conformation of n-butane is the most stable?
(A) eclipsed
(B) gauche
(C) staggered
(D) skew boat

Answer

Answer: (c)

2. Find the correct order for relative energies of the ethane conformations
(A) staggered < skewed < eclipsed
(B) skewed < staggered < eclipsed
(C) skewed < eclipsed < staggered
(D) staggered < eclipsed < skewed

Answer

Answer: (a)

3. Find the alkane (C₅H₁₂), which will give only one type of monohalogenated compound
(A) 2,2-dimethylpropane
(B) 2-methylbutane
(C) cyclopentane
(D) n-pentane

Answer

Answer: (a)

4. The bond angle between H-C-C bonds in ethane is
(A) 120°
(B) 180°
(C) 109°
(D) 109.5°

Answer

Answer: (d)

5. Akanes undergo halogenation. It is an example of
(A) nucleophilic substitution
(B) elimination
(C) free-radical substitution
(D) electrophilic substitution

Answer

Answer: (c)

6. Which of the following is the most volatile compound?
(A) n-pentane
(B) Isobutane
(C) 2-methyl butane
(D) 2, 2-dimethyl propane

Answer

Answer: (d)

7. Paraffin wax is
(A) Saturated hydrocarbons
(B) Unsaturated hydrocarbons
(C) Alcohol
(D) Ester

Answer

Answer: (a)

8. Find the correct order for the ease of formation of free radicals
(A) 1° > 2° > 3°
(B) 3° > 2° > 1°
(C) 2° > 1° > 3°
(D) 2° > 3° > 1°

Answer

Answer: (b)

9. Formation of an alkane from reduction of alkyl halide with Zn is known as
(A) Cannizzaro reaction
(B) Frackland reaction
(C) Kolbe reaction
(D) Wurtz reaction

Answer

Answer: (b)

10. Find the compound with the highest boiling point among the following
(A) n-Butane
(B) n-Octane
(C) Iso-octane
(D) 2,2,3,3-Tetramethylbutane

Answer

Answer: (b)