Question Detail

Air contains maximum amount of

oxygen
nitrogen
hydrogen
carbon dioxide

Answer: Option B

Similar Questions :

1. Chemical used in photography is

sodium sulphate
sodium sulphite
sodium thiosulphate
sodium oxalate

Answer: Option C

2. What is the hardest form of carbon ?

coke
graphite
charcoal
diamond

Answer: Option D

3. Who is regarded as father of modern chemistry ?

Ruterford
Einstein
Lavoisier
C.V. Raman

Answer: Option C

4. Why is phosphorus kept under water ?

to make it wet
to make it durable
water forms a protective coating on it
to save it from catching fire when exposed to dry air

Answer: Option D

5. The aqueous solution of which acids is called Vinegar ?

Acetic acid
Hydrochloric acid
Citric acid
Oxalic acid

Answer: Option A

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