Name the hormone responsible for the descent of tests of into the scrotum. Why does the failure of the process result in sterility?

Give the chemical name of the compound responsible for the blue colour in the Lassaigne's test for nitrogen.

It is predicted by the meteorologists that global warming will result in the flooding of oceans due to the melting of ice caps on the earth. Name the thermodynamic process involved in the melting of ice.

A boy witnessed an accident on his way to school. Following changes occurred in him. (Increased heart beat, profuse sweating, pupils dilated, shivering, pale face, increased respiration) a) Name the hormone responsible for these changes? b) Name the gland which secretes this hormone?