Q. Which one of the following gases is ejected from volcanic hills?
1) Hydrogen
2) Nitrogen
3) Chlorine
4) Sulphur dioxide
Q. Acid Rain is caused due to the presence of the folloiwng gases in the air?
1) N2 and O3
2) NH3 and Cl2
3) SO2 and NO2
4) O3 and N2
Q. What does the airbag, used for safety of car driver, contain?
1) Sodium bicarbonate
2) Sodium azide
3) Sodium nitrite
4) Sodium peroxide
Q. The Chemical symbol of gold is
1) Au
2) Al
3) Ag
4) Hg
Q. Which of the following is a semi-solid lubricant?
1) Kerosene
2) Wax
3) Vaseline
4) Graphite
Q. A car battery contains on electrolyte of
1) Nitric Acid
2) Hydrochloride Acid
3) Sulphuric Acid
4) Potassium Hydroxide
Q. Which of the following gases was commonly used in the past in refrigeration?
1) Chlorine
2) Sulphur dioxide
3) Phosphine
4) Ammonia
Q. Disadvantage of using DDT as pesticide is
1) it becomes ineffective after something
2) not easily degraded in nature
3) less effective than others
4) its high cost
Q. Green house gases are
1) CO2, CH4, NO and CFC
2) CO2, CH4, SO2 and NO
3) SO2, No, H2S and CO
4) CO, NH3, H2,S and N2
Q. The manufacture of iron from iron ore involves the process of
1) Oxidation
2) Reduction
3) Fractional distillation
4) Electrolysis
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