Question Detail

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

Similar Questions :

1. Natural rubber is a polymer derived from ?

ethylene
propylene
isoprene
butadiene

Answer: Option C

2. Faraday's Law is associated with

Reaction of gases
Pressure of gases
Electrolysis
Temperature and pressure

Answer: Option C

3. The metallurgical process in which a metal is obtained in a fused state is called ?

roasting
calcinations
smelting
froth floatation

Answer: Option C

4. The metal used to recover copper from a solution of copper sulphate is ?

Na
Ag
Hg
Fe

Answer: Option D

5. What is the chemical name of table salt ?

Sodium nitrate
Ammonium chloride
Sodium chloride
Calcium chloride

Answer: Option C

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