Q.1 Explain valence bond theory (VBT). Q.2 Differentiate between bonding and anti-bonding molecular orbital. Q.3 Write mechanism of polymerization. Q.4 Explain Ion-exchange process of water softening. RGPV Nov 18 Q.5 Write a short note on boundary lubrications. RGPV Nov 18 Q.6 Define and write the significance of the Oiliness. RGPV Nov 18 Q.7 Define and write the significance of the Pour Point.RGPV Nov 18 Q 8. Write short note on Plaster of Paris. RGPV Nov 18 Q.9 What do you understand by break point chlorination? Give Advantages also.RTU DEC 18