The correct option for axial distances and axial angles for hexagonal crystal system is
Which of the following is/are "not correct" for $\mathrm{CH}_3 \mathrm{OH}+\mathrm{CH}_3 \mathrm{COOH}$ mixture solution?
1. $\Delta H_{\text {mix }}<0$
2. Does not obey Raoult's law.
3. $\Delta H_{\text {mix }}>0$
4. An example of ideal solution.
Henry's law is valid for
(A) ammonia gas dissolution in water
(B) $\mathrm{O}_2$ gas dissolution in unsaturated blood
(C) $\mathrm{O}_2$ dissolution in water
(D) $\mathrm{CO}_2$ dissolution in water
On passing a current of 1.2 A through a solution of salt of copper for $40 \mathrm{~min}, 0.96 \mathrm{~g}$ of copper was deposited. The equivalent weight of copper in g is
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