Question

S : The melting point of ice is lowered on increasing the pressure, whereas melting point of solid other than ice is raised upon increasing pressure,
E : Ice shows H-bonding and leads to the three dimensional solid of more volume.

• A. S is correct but E is wrong
• B. S is wrong but E is correct
• C. Both S and E are correct and E is correct explanation of S
• D. Both S and E are correct but E is not correct explanation of S

Answer 1

The correct option is C Both S and E are correct and E is correct explanation of S

Option (C) is correct.
According to Le Chatlier's principle, during melting of ice to water, the volume decreases. Since increased pressure also causes the volume to decrease, it causes the water to remain in liquid form at lower temperatures.
Ice $\rightleftharpoons$ Water
$V_S>V_W$
Thus, forward reaction occurs on increasing pressure, i.e., more ice will melt or melting point is lowered.
In case of other solid other than ice-
Solid $\rightleftharpoons$ Liquid
$V_S<V_L$
Thus, more solid will be formed on increasing pressure.