Write down the addition reactions of acetylene with hydrogen and bromine.

Write down the laws of refraction.

Write down the substitution reaction of methane with chlorine.

Write an example of addition reaction.

Short Note-Addition reaction

Write down the kinetic gas equation .

Write down the dimensions of stress.

Write down the functions of skull.

Write down the dimension of entropy.

What is fuel cell ? Write down the anodic reaction and cathodic reaction of a hydrogen - oxygen fuel cell. Give one use of fuel cell.