UPSC 2000 › Science & Technology › Chemistry

4 questions · 2000 · answers as per the UPSC key

Take test Free Study this topic: Science and Technology
All years of Chemistry · Full UPSC 2000 paper
UPSC 2000 · Q108 · Science & Technology › Chemistry · Save

Match List I with List II

and select the correct answer using the codes given below the Lists:

List I I. German Silver II. Solder III. Bleaching Powder IV. Hypo

List II A) Tin B) Nickel C) Sodium D) Chlorine

Codes:

(a) I-A, II-B, III-D, IV-C
(b) I-B, II-A, III-C, IV-D
(c) I-A, II-B, III-C, IV-D
(d) I-B, II-A, III-D, IV-C
Show answer
Answer: (d) I-B, II-A, III-D, IV-C
UPSC 2000 · Q112 · Science & Technology › Chemistry · Save

A small pouch containing silica gel is often found in bottles of medicine in tablet or powder form because silica gel

(a) kills bacteria
(b) kills germs and spores
(c) absorbs moisture
(d) absorbs all gases present inside the bottle
Show answer
Answer: (c) absorbs moisture
UPSC 2000 · Q113 · Science & Technology › Chemistry · Save

Match List I (Industrial processes) with List II (Industry with which associated) and select the correct answer using the codes given below the Lists:

List I I. Cracking II. Smelting III. Hydrogenation IV. Vulcanization

List II A) Rubber B) Petroleum C) Copper D) Edible fats

Codes:

(a) I-C, II-B, III-A, IV-D
(b) I-B, II-C, III-D, IV-A
(c) I-B, II-C, III-A, IV-D
(d) I-C, II-B, III-D, IV-A
Show answer
Answer: (b) I-B, II-C, III-D, IV-A
UPSC 2000 · Q124 · Science & Technology › Chemistry · Save

Consider the following statements: Hard water is not suitable for I. Drinking. II. Washing clothes with soap. III. Use in boilers. IV. Irrigating crops.

Which of these statements are correct?

(a) I and III
(b) II and III
(c) I, II and IV
(d) I, II, III and IV
Show answer
Answer: (b) II and III