Q: The type of crop which is able to fix nitrogen from air is known as:

A: Legume

B: Rice

C: Tuber

D: Potato



Legume


Q: What is the rarest element on earth?

A: Radium

B: Einsteinium

C: Astatine

D: none of these



Astatine


Q: CNG stands for:

A: Compressed Natural Gasoline

B: Compressed Natural Gas

C: Compressed Nitrogen Gas

D: Compressed Neon Gas



Compressed Natural Gas


Q: Sound travels fastest in

A: Vacuum

B: Steel

C: Water

D: Air



Steel


Q: Ozone hole refers to :

A: hole in Ozone layer

B: decrease in the Ozone layer

C: decrease in thickness of Ozone layer

D: increase in thickness of Ozone layer



decrease in thickness of Ozone layer


Q: Which of the following is the largest ecological unit ?

A: Organism

B: Population

C: Biome

D: Ecosystem



Biome


Q: All enzymes are actually

A: Protein

B: Carbohydrates

C: Fatty acids

D: Steroids



Protein


Q: How much blood does a man have in his body?

A: 4 %

B: 10 %

C: 7 %

D: None of these



7 %


Q: Kidney disease in man is caused by the pollutant

A: Cadmium

B: Iron

C: Cobalt

D: Carbon



Cadmium


Q: The Kyoto Protocol is associated with :

A: Environment

B: Nuclear Power

C: Trade

D: none of these



Environment
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