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JIPMER 2014

Exam: JIPMER
Year: 2014
Subject: Chemistry
Chapter: p Block Elements (Group 15, 16, 17 & 18)

JIPMER 2014 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Which of the following is not correct?

Which of the following is not correct?

Options

AAmmonia is used as refrigerant
BA mixture of $\mathrm{Ca}(\mathrm{CN})_2$ and C is known as nitrolim
CA mixture of $\mathrm{Ca}\left(\mathrm{H}_2 \mathrm{PO}_4\right)_2 and$ \mathrm{CaSO}_4 \cdot 2 \mathrm{H}_2 \mathrm{O} is known as superphosphate of lime
DHydrolysis of $\mathrm{NCl}_3$ gives $\mathrm{NH}_3$ and HOCl

Correct answer

B. A mixture of $\mathrm{Ca}(\mathrm{CN})_2$ and C is known as nitrolim

Step-by-step solution

A mixture of calcium cyanamide

\mathrm{CaCN}_2

and coke (C) is called nitrolim. It is used as a fertilizer and can be prepared by passing nitrogen on

\mathrm{CaC}_2

.

\mathrm{CaC}_2+\mathrm{N}_2

\xrightarrow{1100^{\circ}

\mathrm{C}} \underset{\text{ nitrolim }}{\mathrm{CaCN}_2}+

\mathrm{C}

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