CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________ molecules of ozone?

Which of the following is a manmade source of air pollution?

________ is not a fertilizer?

Thermal conductivity cell is the primary element of a/an ________ analyser?

The momentum correction factor for the velocity distribution of laminar flow is________?

Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to ________ kJ/kg. mole?