Chemistry
The acid used in lead storage cells is

Sulphuric acid
Nitric acid
Hydrochloric acid
Phosphoric acid

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Chemistry
The open "Sigrees" or coal stoves often require fanning to sustain burning because of

Accumulation of smoke and dust over the sigrees
Tendency of carbon dioxide to form a layer along with dust smoke
Lack of oxygen in the surroundings of sigrees
Interrupted release of moisture from the material

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Chemistry
The main use of salt in the diet is to

produce in small amounts the hydrochloric acid required for the digestion of food
increase the solubility of food particles in water
make the taste of food better
ease the process of cooking

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