The angle of contact between pure water and pure glass, is

        (a)    0°

        (b)    45^o

        (c)    90°

(d)    135^o

Question

The angle of contact between pure water and pure glass, is (a) 0&deg; (b) 45 o (c) 90&deg; (d) 135 o

Amit Saxena · Answer

(a)

We know that angle of contact is the angle between the tangent to liquid surface at the point of contact and solid surface inside the liquid. In case of pure water and pure glass, the angle of contact is zero.

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The angle of contact between pure water and pure glass, is (a) 0° (b) 45 o (c) 90° (d) 135 o

The angle of contact between pure water and pure glass, is

        (a)    0°

        (b)    45^o

        (c)    90°

(d)    135^o

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