The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are________?

Isotonic solutions must have the same________?

Preheating of ________ the flame temperature?

H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ________?

In screen analysis, the notation +5 mm/-10 mm means particles passing through ________?

Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively ________ percent?