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RE-NEET2026Chemistry-Polarity & Dipole Moment

RE-NEET 2026 Chemistry Polarity & Dipole Moment MCQ Question

Type: MCQ-fact-Medium-Class 11

Arrange the following compounds in the increasing order of polarity

A. CH₃CH₂OCH₂CH₃

B. CH₃CH₂OH

C. CH₃COCH₃

D. CH₃COOH Choose the correct answer from the options given below.

A

C < A < D < B

B

C < A < B < D

C

A < C < B < D

D

A < B < C < D

Correct Answer

Option C

Detailed Explanation

The polarity of a molecule is influenced by its functional groups and the presence of electronegative atoms. In this case, the order of increasing polarity is determined by the ability of each compound to form hydrogen bonds and the presence of polar bonds.

  1. CH₃CH₂OCH₂CH₃ (A) is the least polar due to its ether functional group, which has lower polarity.
  2. CH₃COCH₃ (C) has a carbonyl group, making it more polar than A but less than alcohols.
  3. CH₃CH₂OH (B) contains a hydroxyl group, increasing its polarity significantly due to hydrogen bonding.
  4. CH₃COOH (D) is the most polar due to its carboxylic acid group, which can both donate and accept hydrogen bonds.

The tempting wrong options fail because they misplace the order of compounds based on their functional groups and hydrogen bonding capabilities.

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