Selected MCQ

Current Question
Which functional group is present in an ester?
  • A. (-COOH)
  • B. (-COOR)
  • C. (-CHO)
  • D. (-CONH_2)
Correct Answer: B
Explanation:
Esters contain an acyl group bonded to an alkoxy oxygen.
Related Question 1
Which functional group is alcohol?
  • A. -COOH
  • B. -OH
  • C. -NH₂
  • D. -CHO
Correct Answer: B
Explanation:
Alcohols contain hydroxyl group.
Related Question 2
Which functional group is most reactive in nucleophilic substitution?
  • A. Alkane
  • B. Alkyl halide
  • C. Alkene
  • D. Aromatic ring
Correct Answer: B
Explanation:
Leaving group facilitates substitution.
Related Question 3
Which functional group defines ketones?
  • A. -CHO
  • B. -CO-
  • C. -COOH
  • D. -OH
Correct Answer: B
Explanation:
Ketones contain carbonyl group within chain.
Related Question 4
Which reaction forms ester?
  • A. Hydrolysis
  • B. Esterification
  • C. Oxidation
  • D. Reduction
Correct Answer: B
Explanation:
Acid + alcohol forms ester.
Related Question 5
In general relativity, geodesics represent:
  • A. Maximum energy paths
  • B. Straightest paths in curved spacetime
  • C. Quantum trajectories
  • D. Stationary points of entropy
Correct Answer: B
Explanation:
Free-falling particles follow spacetime geodesics.