Which of the following is not present in urine?

Water

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Salts

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Salivary amylase

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Urea

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Solution

The correct option is C
Salivary amylase

Salivary amylase is not present in urine. Amylase is an enzyme that catalyses the hydrolysis of starch into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion.

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