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386 . Water is a good solvent. This is due to high -
A. specific heat of water
B. heat of fusion of water
C. surface tension of water
D. dielectric constant of water

387 . The spread in colours in a rainbow on sky is primarily due to
A. Dispersion of sunlight 
B. Reflection of sunlight 
C. Reflection of sunlight
D. Total internal reflection of sunlight