Which of the following is the correct order of greenhouse gases based on their $GWP$ (Global Warming Potential)?

State whether the following statements are true or false:
$(1)$ Mist is produced by particles of spread liquid and by condensation of vapour in air.
$(2)$ Particulate matter of size up to $5 \ \mu m$ reaches directly into the lungs.
$(3)$ Ozone and nitric oxide cause irritation in the nose and throat.

Most hazardous metal pollutant of automobile exhaust is

Which of the following substances combines with hemoglobin in the blood to form carboxyhemoglobin?

The reaction that is $NOT$ involved in the ozone layer depletion mechanism in the stratosphere is

Fill in the blanks:
$(1)$ $.......$ is made using fly ash and slag from the steel industry.
$(2)$ Biogas is used in the production of $.......$ and its byproduct is used as $.......$.