Once my teacher told me, there is no entrance exam in the world; related to life sciences; where a question on nitrogen cycle is not asked.
The same is true for Joint CSIR-UGC NET. Every time atleast 2-6 marks questions are asked from nitrogen cycle.
So, here is the practice set for Nitrogen cycle. Please note, there are 2 questions in Section A, 3 questions in Section B and 5 questions in Section C.
Take a pen and paper and write your answers on it. Check your answers provided at the end of the test.
Test duration: STRICTLY 30 minutes.
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BEST OF LUCK.