The P Block Elements - Result Question 18
####18. Which of the following fertilizers has the highest nitrogen percentage ?
[1993]
(a) Ammonium sulphate
(b) Calcium cyanamide
(c) Urea
(d) Ammonium nitrate
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Solution:
- (c) Urea $(46.6 % N) . %$ of $N$ in other compound are: $(NH_4)_2 SO_4=21.2 %$;
$CaCN_2=35.0 %$ and $NH_4 NO_3=35.0 %$