MCQ
The chemical used for cooling in refrigeration is
- A$C{O_2}$
- B$N{H_4}OH$
- C$N{H_4}Cl$
- ✓Liquid $N{H_3}$
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For the cell $\mathrm{Cu}(\mathrm{s})\left|\mathrm{Cu}^{2+}(\mathrm{aq})(0.01 \mathrm{M}) \| \mathrm{Ag}^{+}(\mathrm{aq})(0.001 \mathrm{M})\right| \mathrm{Ag}(\mathrm{s})$ the cell potential $=.....\times 10^{-2} \mathrm{~V}$
(Round off to the Nearest Integer).
[Use: $\frac{2.303 \mathrm{RT}}{\mathrm{F}}=0.059$ ]
$(I)$ $-OAc$ $(II)$ $-OMe$
$(III)$ $-O-SO_2-Me$ $(IV)$ $-O-SO_2-CF_3$
The order of leaving power is :
Reason : Cerium salts are used as catalyst in petroleum cracking.
