Learn Environmental Chemistry MCQ questions & answers in Inorganic Chemistry are available for students perparing for IIT-JEE, NEET, Engineering and Medical Enternace exam.
41.
The aromatic compounds present as particulates are
A
polycyclic aromatic hydrocarbons
B
benzene
C
toluene
D
nitrobenzene
Answer :
polycyclic aromatic hydrocarbons
$$PAH$$ ( Poly Aromatic Hydrocarbon )
42.
Which of the following is most abundant hydrocarbon pollutant ?
A
Butane
B
Ethane
C
Methane
D
Propane
Answer :
Methane
Most abundant hydrocarbon pollutant is methane.
43.
Soil is polluted by
(i) pesticides
(ii) synthetic fertilizers
(iii) green manure
Choose the correct option.
A
(i) and (iii)
B
(i) and (ii)
C
(ii) and (iii)
D
(i), (ii) and (iii)
Answer :
(i) and (ii)
Pesticides and synthetic fertilizers pollute the soil.
44.
Green house gases
A
allow shorter wavelength to enter earth's atmosphere while doesn't allow longer wavelength to leave the earth's atmosphere.
B
allow longer wavelength to enter earth atmosphere while doesn't allow shorter wavelength to leave the surface
C
do not have wavelength specific character.
D
show wavelength specific behaviour near the earth while far from earth these have wavelength independent behaviour.
Answer :
allow shorter wavelength to enter earth's atmosphere while doesn't allow longer wavelength to leave the earth's atmosphere.
Radiation coming from sun or outerspace have high energy or short wavelength, which are allowed to enter by green house gases. However, radiation emitted by earth is in infrared region, having long wavelength, are reflected back by the envelope of green house gases.
45.
Which one of the following pairs is mismatched
A
Fossil fuel burning - release of $$C{O_2}$$
B
Nuclear power - radioactive wastes
C
Solar energy - Greenhouse effect
D
Biomass burning - release of $$C{O_2}$$
Answer :
Solar energy - Greenhouse effect
Solar energy is not responsible for green house effect instead it is a source of energy
for the plants and animals.
46.
Photochemical smog consists of excessive amount of $$X,$$ in addition to aldehydes, ketones, peroxyacetyl nitrate $$(PAN),$$ and so forth $$X$$ is :
A
$$CO$$
B
$$C{H_4}$$
C
$${O_3}$$
D
$$C{O_2}$$
Answer :
$${O_3}$$
Chemical pollutants in photochemical smog are nitrogen oxides ( $$NO$$ and $$N{O_2}$$ ), volatile organic compounds, ozone $$\left( {{O_3}} \right)$$ and peroxyacetyl nitrate.
47.
High concentration of which of the following in atmosphere leads to stiffness of flower buds which eventually fall off from plants ?
A
$$N{O_2}$$
B
$$S{O_2}$$
C
$$CFC$$
D
$${\text{Smog}}$$
Answer :
$$S{O_2}$$
High concentration of $$S{O_2}$$ leads to stiffness of flower buds.
48.
Lung diseases are about four times more probable in urban areas as compared to rural areas. This is due to the presence of which of the following in atmosphere?
A
$$C{O_2}$$
B
$$N{O_2}$$
C
$${O_2}$$
D
$${N_2}$$
Answer :
$$N{O_2}$$
No explanation is given for this question. Let's discuss the answer together.
49.
List - I
List - II
a.
Troposphere
1.
Prevents UV rays coming to earth
b.
Stratosphere
2.
Ionization of gases
c.
Mesosphere
3.
Maintenance of heat balance
d.
Thermosphere
4.
Non propagation of sound waves
The correct match is
A
a - 2, b - 4, c - 3, d - 1
B
a - 4, b - 2, c - 1, d - 3
C
a - 3, b - 1, c - 4, d - 2
D
a - 1, b - 3, c - 2, d - 4
Answer :
a - 3, b - 1, c - 4, d - 2
No explanation is given for this question. Let's discuss the answer together.
50.
Excess nitrate in drinking water can cause
A
methemoglobinemia
B
kidney damage
C
liver damage
D
laxative effect
Answer :
methemoglobinemia
Excessive concentration of nitrate in drinking water is harmful and can cause
methemoglobinemia ( blue baby syndrome ).