Ics can be grouped in two categories.What are they?

Depending upon the repulsive force between the ligands & the central metal ion. d-orbital of the metal ion is further divided into two groups. What are they/ Which group has higher energy in tetrahedral complex.

What is dry ice?

How are polymers are classified into different categories on the basis of the intermolecular forces? Give one example of a polymer of each of these categories.

Though glucose contains -CHO group in its open chain structure, but it can not give 2.4 DNP test, schiff test etc. What conclusion can you draw from this beheaviour?

A copper block of mass 2.5 kg is heated in a furnace to a temperature of 500^2C and then placed on a large ice block. What is the maximum amount of ice that can melt? (Specific heat of copper = 0.39 J g-^1K ^-1 , heat of fusion of water = 335 J g^-1)

Can two streamlins cross each other?