Water samples with $BOD$ values of $4 \ ppm$ and $18 \ ppm$ respectively are:

Which of the following does not cause atmospheric pollution?

For your agricultural field or garden,you have developed a compost-producing pit. Discuss the process in the light of bad odour,flies,and recycling of wastes for a good produce.

Which of the following practices will not come under green chemistry?
$1$. Using soaps made of vegetable oils instead of synthetic detergents,whenever possible.
$2$. Using $H_2O$ for bleaching purposes instead of chlorine-based bleaching agents.
$3$. Using liquefied $CO_2$ for dry cleaning clothes and laundry.
$4$. Using plastic cans for neatly storing substances.

Match the particulate pollutants given in List-$I$ with their descriptions given in List-$II$.

List-$I$	List-$II$
$(A)$ Smoke	$(1)$ Formed by condensation of vapours during chemical reactions.
$(B)$ Dust	$(2)$ Fine solid particles.
$(C)$ Mist	$(3)$ Produced by particles of spray liquids and by condensation of vapours.
$(D)$ Fumes	$(4)$ Mixture of solid and liquid particles formed by combustion of organic matter.

Excessive release of $CO_2$ into the atmosphere results in