What is the formula of urea?

$NH_2CONH_2$

The correct answer is Option (1) → $NH_2CONH_2$

Urea is an organic compound containing two amine groups attached to a carbonyl group. Its chemical formula is:$NH_2CONH_2$

Option 1: NH₂CONH₂ - This is the correct molecular formula of urea. It consists of a carbonyl group bonded to two –NH₂ groups.

Option 2: NH₄HSO₄ - This is ammonium hydrogen sulfate, an inorganic salt. Not urea.

Option 3: C₂H₅OH - This is ethanol (an alcohol). Not urea.

Option 4: NH₄OH - This is ammonium hydroxide. Not urea.