Rajasthan Police Constable Model Paper 7

Question : 77 of 150

Marks: +1, -0

Which of the following is NOT a compound?

Solution:

Milk is not a Compound, it is a colloidal mixture.
Ammonia is a Compound of Nitrogen and Hydrogen with the formula $NH_3$
Sodium chloride is a Compound used by our body to absorb and transport nutrients and also to maintain blood pressure. Its formula is NaCl.
Chalk is a Compound. Its formula is $CaCO_3$ . It is a form of limestone which is made up of the mineral Calcite.

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