What is diastereomers ?
Answer:-
When the atoms or the groups attached to the two chiral atoms are different, this gives rise to a new pair of molecules, called diastereo isomers.
angle of contact.
It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact The value of angle of contact depends upon (i) Nature of solid and liquid in contact (ii) Cleanliness of the surface in contact (iii) Medium above the free surface of liquid
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