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The percentage of nitrogen in urea is about 

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 The percentage of nitrogen in urea is about 

(a) 46

(b) 85

(c) 18

(d) 28

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Correct option is (a) 46

60 g of urea (H2NCONH2) has 28 g of N

100 g of urea has (28/60) x 100 = 46%

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