Which metal in the red hot state reacts with steam?
Aluminium
Sodium
Potassium
Zinc
Crystalline hydrated salts which are exposed to the atmosphere loses their moisture partially or completely to the atmosphere and change into the amorphous state is called as
Deliquescent
efflorescent
Hygroscopic
Drying agent
The substance which abosrb moisture from the atmosphere when exposed to moiture but donot change their state after the absorption of moisture is
Hydrated
Efflorescent
Which is very essential for the growth of plants and animal life.
Food
Clothes
Shelter
Water
Which is used for removing coffee & tea stains?
Borax solution
Turpentine
Petrol
Alcohol
Water vapour, cloud, mist,fog etc are the__________state of water.
Solid
Liquid
Gaseous
Combined
Who confirmed that water is a compound of two elements, hydrogen and oxygen.
A. Lavoisier
Rutherford
Joseph Priestly
Albert Einstein