Question

Match List - I with List II
In I column are given different measures of angle of contact.

a) $0^o$	e) liquid will rise
b) $={90}^o$	f) pure water silver
c) $<{90}^o$	g) liquid will not wet
d) $>{90}^o$	h) pure water and glass

The correct match is:

• A. a-- h; b -- g; c-- f; d-- e
• B. a -- e; b-- f; c-- g; d-- h
• C. a--e; b-- g; c-- f; d-- h
• D. a--h; b-- f; c-- e; d-- g

Answer 1

The correct option is D a--h; b-- f; c-- e; d-- g

the angle of contact for pure water and glass is zero

for silver and pure water, contact angl;e is ${90}^{\circ }$.

for angle $<{90}^{\circ }$ , a pressure at top of the capillary will be low and water will rise.

for angle $>{90}^{\circ },$ pressure at the bottom of the capillary will be high and water can't wet it.