Chemistry
Substance used as an anti freeze in radiators of automobiles is :

Ethyl alcohol
Methyl alcohol and H2O
Ethyl alcohol and H2O
Methyl alcohol

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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
ease the process of cooking
make the taste of food better
increase the solubility of food particles in water

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