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AP EAMCET2005Chemistryp Block Elements (Group 15, 16, 17 & 18)

Which of the following is not correct ?

Options

  1. AAmmonia is used as refrigerant
  2. BA mixture of Ca ( CN )₂ and C is known as nitrolim
  3. CA mixture of Ca ( H ₂ PO ₄ )₂ and CaSO ₄ 2 H ₂ O is known as superphosphate of lime
  4. DHydrolysis of NCl ₃ gives NH ₃ and HOCl

Correct answer

B. A mixture of Ca ( CN )₂ and C is known as nitrolim

Step-by-step solution

A mixture of calcium cyanamide CaCN ₂ and coke (C) is called nitrolim. It is used as it fertilizer and can be prepared by passing nitrogen on CaC ₂ .

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