51.

Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
A. Television B. Refrigerator
C. Tube light D. Cooking gas
Answer and Explanation
Answer:B
Explanation: No answer description available for this question.
52.

Balloons are filled with
A. nitrogen B. helium
C. oxygen D. argon
Answer and Explanation
Answer:B
Explanation: No answer description available for this question.
53.

Which of the following does not contain a coinage metal?
A. Silver and Gold B. Zinc and Gold
C. Copper and Silver D. Copper and Gold
Answer and Explanation
Answer:B
Explanation: No answer description available for this question.
54.

Which metal pollute the air of a big city?
A. Copper B. Chromium
C. Lead D. Cadmium
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.
55.

Water is a good solvent of ionic salts because
A. it has a high specific heat B. it has no colour
C. it has a high dipole moment D. it has a high boiling point
Answer and Explanation
Answer:C
Explanation: No answer description available for this question.