The surface of water in contact with glass wall is

The surface of water in the contact with glass wall is _____.

The surface of the water in contact with the glass wall is

The hydrophytes that float freely on the surface of the water with no contact with soil are called.

Assertion :The contact angle between water and glass is acute. Reason :The surface of water in the capillary is convex .

Assertion :The contact angle between water and glass is acute. Reason :The surface of water in the capillary is convex .

Assertion :The contact angle between water and glass is acute. Reason :The surface of water in the capillary is convex .

Assertion :The contact angle between water and glass is acute. Reason :The surface of water in the capillary is convex .

The top of a lake is frozen when the air in contact with the lake surface is at -5^(@)C the temperature of water in contact with the bottom of the lake will be

"The angle of contact of mercury with glass is obtus, while the water with glass is acute." Why?