1000 Best General Science MCQ-Questions
Q49). LPG consists of mainly
a).methane, ethane and hexane
b).ethane, hexane and nonane
c).methane, hexane and nonane
d).methane, butane and propane
Correct Answer:
methane, butane and propane
Explanation:
Q50). Air is a/an
a).compound
b).element
c).electrolyte
d).mixture
Correct Answer:
mixture
Explanation:
Q51). 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
Correct Answer:
Refrigerator
Explanation:
Q52). Balloons are filled with
a).nitrogen
b).helium
c).oxygen
d).argon
Correct Answer:
helium
Explanation:
Q53). 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
Correct Answer:
Zinc and Gold
Explanation:
Q54). Which metal pollute the air of a big city?
a).Copper
b).Chromium
c).Lead
d).Cadmium
Correct Answer:
Lead
Explanation:
Q55). Bell metal is an alloy of
a).nickel and copper
b).zinc and copper
c).brass and nickel
d).tin and copper
Correct Answer:
tin and copper
Explanation:
Q56). 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
Correct Answer:
it has a high dipole moment
Explanation: