NEET 2022
- Exam
- NEET
- Year
- 2022
- Subject
- Chemistry
- Chapter
- Chemical Bonding and Molecular Structure
NEET 2022 · Chemistry · Chemical Bonding and Molecular Structure
The decreasing order of boiling points of the following alkanes is:...
The decreasing order of boiling points of the following alkanes is:
(a) Heptane
(b) butane
(c) 2-methylbutane
(d) 2-methylpropane
(e) hexane
Choose the correct answer from the options given below:
Options
- A(a) (c) (e) (d) (b)
- B(c) (d) (a) (e) (b)
- C(a) (e) (b) (c) (d)
- D(a) (e) (c) (b) (d)
Correct answer
D. (a) (e) (c) (b) (d)
Step-by-step solution
With increase in molecular mass, van Der Waal force increases and hence boiling point also increases.
BP : Heptane Hexane 2- Methyl Butane Butane 2- methly propane with the increase in branching, surface area decreases of molecules of same molecular mass which results in decrease in boiling point.