1.

Give scientific reasons.a. Foam accumulates on a the surface of ‘dal’ kept for a long time in summer.b. Why are naphthalene balls kept with clothes to be put away.

Answer»
Give scientific reasons.




a. Foam accumulates on a the surface of ‘dal’ kept for a long time in summer.


b. Why are naphthalene balls kept with clothes to be put away.


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