Tag: green chemistry

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Multiple choice chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

Which of the following reaction occur when urea is added to soil as a fertilizer?

  1. $NH _{ 2 }CONH _{ 2 }\longrightarrow HNCO+NH _{ 3 }$
  2. $N{ H } _{ 2 }CON{ H } _{ 2 }+{ H } _{ 2 }O\longrightarrow 2N{ H } _{ 3 }+C{ O } _{ 2 }$
  3. $2NH _{ 2 }CONH _{ 2 }\longrightarrow H _{ 2 }NCONHCONH _{ 2 }+NH _{ 3 }$

  4. Both 1 and 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Urea is a major fertilizer used worldwide. It provides nitrogen to the soil by decomposing to ammonia and $CO _2$ when acted on by urease, an enzyme in soils. Then, ammonia is taken by the plants.


$N{ H } _{ 2 }CON{ H } _{ 2 }+{ H } _{ 2 }O\longrightarrow 2N{ H } _{ 3 }+C{ O } _{ 2 }$

Hence the correct option is B.