MCQs on Alkane

NEET  Chemistry is the scoring paper in the medical entrance examination. Here, you will discover the NEET Chemistry MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Chemistry objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Chemistry Alkane Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

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)


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