Chemistry
Assertion (A) : Synthetic detergents can lather wen in hard water.Reason (R) : Synthetic detergents form soluble calcium and magnesium salts with hard water.

Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

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Chemistry
Which of the process is known as nitrification?

Reaction of Nitrogen Monoxide with oxygen to form nitric acid
Conversion of nitrite to nitric oxide
Conversion of ammonia to nitrites
Reaction of nitrogen dioxide with water to form nitric acid

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