36) 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
Click Here to Reveal Answer
Answer Option B
37) 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
Click Here to Reveal Answer
Answer Option B
38) Bell metal is an alloy of
A. nickel and copper
B. zinc and copper
C. brass and nickel
D. tin and copper
Click Here to Reveal Answer
Answer Option D
39) Permanent hardness of water can be removed by adding
A. chlorine
B. washing soda
C. potassium permanganate
D. bleaching powder
Click Here to Reveal Answer
Answer Option B
40) LPG consists of mainly
A. methane, ethane and hexane
B. ethane, hexane and nonane
C. methane, hexane and nonane
D. methane, butane and propane
Click Here to Reveal Answer
Answer Option D
 Questions in Competitive Examinations){kind=link}