Top 100+ Basic Chemistry Questions and Answers Pdf - 1

Question: 1

Which one of the following pairs is correctly matched?

(A) Zinc sulphide - Philosopher’s wool

(B) Zinc phosphide - Rat poison

(C) Silver iodide - Horn Silver

(D) Silver chloride - Artificial rain

Ans: B

Zinc phosphide - Rat poison

Question: 2

The sodium salt of a long chain carboxylic acid possessing cleaning action is

(A) A fat

(B) A soap

(C) A detergent

(D) An ester

Ans: C

A detergent

Question: 3

Rectified spirit contains

(A) 18% ethanol

(B) 75% ethanol

(C) 95.6% ethanol

(D) 100% ethanol

Ans: C

95.6% ethanol

Question: 4

The milk is an example of

(A) Air-solution

(B) Colloidal solution

(C) Emulsion

(D) Solution

Ans: C

Emulsion

Question: 5

Sulphur is extracted by

(A) Contact process

(B) Frasch process

(C) Solvay process

(D) Haber process

Ans: B

Frasch process

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