Radon is___________
Which one of the following gases is readily soluble in water at room temperature
Bleaching powder contains___________
Bleaching action of chlorine is by________
Which is the heaviest metal
What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called
Nail polish remover contains___________
Which one of the following is the softest
The chemical used as a fixer in photography is__________
The element used in lead pencils is__________
