Q. Given below are two statements : Statement (I) : The boiling points of alcohols and phenols increase with increase in the number of C-atoms. Statement (II) : The boiling points of alcohols and phenols are higher in comparison to other class of compounds such as ethers, haloalkanes. In the light of the above statements, choose the correct answer from the options given below :
A) Both Statement I and Statement II are false
B) Both Statement I and Statement II are true
C) Statement I is false but Statement II is true
D) Statement I is true but Statement II is false
Explanation
[Solution by Dr. Abubacker] Boiling points rise with molecular size (stronger van der Waals forces), and alcohols and phenols form intermolecular hydrogen bonds, giving higher boiling points than ethers or haloalkanes of comparable mass. Both are true. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.