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UPSC Prelims 1999

148 questions, in the order they were asked.

1999 · Q103GeographyEconomic & Mineral Geographyeasy

Assertion (A): Chile continues to be an important producer of copper in the world. Reason (R): Chile is endowed with the world’s largest deposit of porphyry copper.

  1. (a)Both A and R are true, and R is the correct explanation of A
  2. (b)Both A and R are true, but R is not a correct explanation of A
  3. (c)A is true, but R is false
  4. (d)A is false, but R is true
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Official answer(a) Both A and R are true, and R is the correct explanation of A

1999 · Q108Science & TechnologyHealth & Diseasesmoderate

Match List I (Drugs / Chemicals) with List II (Their uses) and select the correct answer using the codes given below the Lists: List I I. Atropine II. Ether III. Nitro-glycerine IV. Pyrethrin List II A) Local anaesthesia B) Heart trouble C) Dilation of pupil D) Mosquito control Codes:

  1. (a)I-A, II-C, III-B, IV-D
  2. (b)I-A, II-C, III-D, IV-B
  3. (c)I-C, II-A, III-D, IV-B
  4. (d)I-C, II-A, III-B, IV-D
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Official answer(d) I-C, II-A, III-B, IV-D

1999 · Q118Science & TechnologyHealth & Diseaseseasy

Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because

  1. (a)barium allows X-rays to pass through the stomach on account of its transparency to X-rays
  2. (b)barium compound, like magnesium sulphate helps in cleaning the stomach before X-ray examination
  3. (c)barium is a good absorber of X-rays and this helps the stomach to appear clearly in contrast with the other regions in the picture
  4. (d)barium salts are white in colour and this helps the stomach to appear clearly in contrast with other regions in the picture
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Official answer(c) barium is a good absorber of X-rays and this helps the stomach to appear clearly in contrast with the other regions in the picture