Elements And Metals : 3

Question 1 :

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 : Option B

Question 2 :

Balloons are filled with

A). nitrogen
B). helium
C). oxygen
D). argon
Answer : Option B

Question 3 :

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 : Option B

Question 4 :

Which metal pollute the air of a big city?

A). Copper
B). Chromium
C). Lead
D). Cadmium
Answer : Option C

Question 5 :

Bell metal is an alloy of

A). nickel and copper
B). zinc and copper
C). brass and nickel
D). tin and copper
Answer : Option D