UPSC Prelims 1996 · General Studies

Question 105: Science and Technology

Match List I with List II and select the correct answer using the codes given below the lists: List I I. Vitamin II. Enzyme III. Hormone IV. Protein List II A. Pepsin B. Carotene C. Keratin D. Progesterone

aI – A, II – B, III – C, IV – D

bI – B, II – A, III – D, IV – C

cI – B, II – A, III – C, IV – D

dI – A, II – B, III – D, IV – C

AnswerThe answer is (b).

Carotene is a plant pigment that the body converts into vitamin A, so it is the vitamin here; pepsin is a protein-digesting enzyme of the stomach; progesterone is a hormone; and keratin is a structural protein of hair, nails and skin. So I-B, II-A, III-D, IV-C.

I. Vitamin - Carotene (B).
II. Enzyme - Pepsin (A).
III. Hormone - Progesterone (D).
IV. Protein - Keratin (C).

Why each option is right or wrong

(a) All four pairs are wrong, such as pepsin matched to a vitamin.
(b) Right: carotene - vitamin, pepsin - enzyme, progesterone - hormone, keratin - protein.
(c) Swaps hormone and protein: keratin is a protein and progesterone a hormone.
(d) Swaps vitamin and enzyme: carotene is a vitamin precursor and pepsin an enzyme.

Explanation: written by UPSC Grade, not by UPSC.

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Source: UPSC, Civil Services (Preliminary) Examination 1996, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.