Question:
The chemical used as a fixer in photography is _________.
Answer:
Sodium thiosulphate
Question:
Which variety of glass is heat resistant?
Answer:
Pyrex glass
Question:
Which synthetic fibre is known as artificial silk?
Answer:
Rayon
Question:
The alloy of aluminium used for making magnet is _________.
Answer:
Alnico
Question:
The reaction between methane and chlorine in diffused sunlight is ______.
Answer:
Radical substitution
