Question

A brief information about a few elements is given below:
(P) It is one of the constituent of steel.
(Q) It is required for combustion.
(R) It is used to preserve food.
(S) It is used as fungicide.

P, Q, R and S are respectively:

• A. Aluminium, Carbon, Oxygen, Phosphorus
• B. Copper, Oxygen, hydrogen, Iodine
• C. Carbon, Oxygen, Nitrogen, Sulphur
• D. Sulphur, Oxygen, Nitrogen, Hydrogen

Answer 1

The correct option is C Carbon, Oxygen, Nitrogen, Sulphur

Steel is an alloy of iron and carbon.
Oxygen is required for combustion.
Nitrogen remains unreactive with food items.
Sulphur is used as fungicide.