The raincoats are made waterproof by coating them with a material,which ............

The grease deposited on a glass plate can be easily removed by cleaning the glass with hot water containing detergent powder,because the detergent powder

Give reason: The wing of a duck does not get wet in water.

$A$ glass plate is partly dipped vertically in mercury and the angle of contact is measured. If the plate is inclined,then the angle of contact will

Why is Teflon coated on non-stick frying pans? Explain.

Given below are two statements:
Statement-$I$: When a capillary tube is dipped into a liquid,the liquid neither rises nor falls in the capillary. The contact angle may be $0^{\circ}$.
Statement-$II$: The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well.
In the light of the above statements,choose the correct answer from the options given below.