Question

Match Column-I with Column-II and select the correct option.

Column-I	Column-II
A.	Catalytic Converter	I	Particulate matter
B.	Electrostatic	II	Carbon monoxide and nitrogen oxides
C.	Earmuffs	III	High noise level
D.	Landfills	IV	Solid wastes

A. A-I; B-II; C-III; D-IV
B. A-II; B-I; C-III; D-IV
C. A-IV; B-III; C-II; D-I
D. A-III; B-II; C-IV; D-I

Answer 1

Hint: Catalytic converter converts gases like carbon monoxide and nitrogen oxides into non-toxic substances. Electrostatic is also referred to as static electricity which is used to filter particulate matter. Earmuffs are used to protect the ear from high-level noises. Landfills are the system that is used in order to dispose of solid wastes.

Complete step-by-step answer:

A catalytic converter is a component of an automobile exhaust system that contains a catalyst that converts toxic gases (such as carbon monoxide as well as uncombusted hydrocarbons) mostly into non-toxic- toxic products (such as water and carbon dioxide). Carbon monoxide is converted to carbon dioxide, hydrocarbons to carbon dioxide, and water as well as nitrogen oxides to nitrogen and oxygen by a catalytic converter. Now, we can say that the catalytic converter is completely matching carbon monoxide and nitrogen oxides.
Particulate matter is a complex combination of particles and droplets within the air that includes organic materials, metals, acids, soil, and dust. Particulate matter has a diameter of less than PM10 or 10 microns. Its typical sources seem to be attrition, agitation, fossil fuel combustion, agricultural processes (nitrogen oxides, ammonia, sulfur oxides, and volatile organic compounds), and, last but not least, wood combustion. Electrostatic precipitators use static electricity to filter particulate matter from exhaust fumes. Thus, it is clear from all the explanations that electrostatics are completely matching with particulate matter.
Earmuffs are clothing items and perhaps personal protective gear that protect a person's ears for warmth or for hearing protection. They have been made up of a thermoplastic or metal headband which happens to fit over the top or back of the head, as well as a cushion or cup at each end to cover the external ears. Thus, we can conclude that earmuffs are related to high noise levels.
Landfills are waste disposal systems where the waste is burnt or buried. This is the most common and easiest form of waste disposal. So, we can clarify that the correct match for landfills is solid waste.

Hence, option B is correct.

Note: We should not get confused while choosing the correct match for landfills because small amounts of nitrogen, oxygen, ammonia, sulfides, hydrogen, carbon monoxide, and, non-methane organic compounds are also present in landfill gas. Here, landfill is completely related to solid wastes whereas catalytic converter is related to carbon monoxide and nitrogen oxides.