Question 1: Palette 1/12

NEET 2023 MCQ

Which statement is not true about photochemical smog?

A

Photochemical smog is harmful to humans but has no effect on plants.

B

Plants like Pinus, Juniparus can help in reducing the photochemical smog.

C

Photochemical smog occurs in warm, dry and sunny climate.

D

Common components of Photochemical smog are ozone, nitric oxide, acrolein, formaldehyde and peroxyacetyl nitrate.

Question 2: Palette 2/12

NEET 2023 MCQ

Given below are two statements:

Statement I : The nutrient deficient water bodies lead to eutrophication.

Statement II : Eutrophication leads to decrease in the level of oxygen in the water bodies.

In the light of the above statements, choose the correct answer from the options given below:

A

Both Statement I and Statement II are false

B

Statement I is correct but Statement II is false.

C

Statement I is incorrect but Statement II is true.

D

Both Statement I and Statement II are true.

Question 3: Palette 3/12

NEET 2022 MCQ

Match List-I with List-II :

	List-I		List-II
(a)	Biochemical oxygen demand	(i)	oxidising mixture
(b)	Photochemical smog	(ii)	polar stratospheric cloud
(c)	Classical smog	(iii)	organic matter in water
(d)	Ozone layer depletion	(iv)	reducing mixture

Choose the correct answer from the options given below :

A

(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

B

(a) - (i), (b) - (iv), (c) - (ii), (d) - (iii)

C

(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)

D

(a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)

Question 4: Palette 4/12

NEET 2021 MCQ

Match List-I with List-II :

	List-I		List-II
(a)	$2S{O_2}(g) + {O_2}(g) \to 2S{O_3}(g)$	(i)	Acid rain
(b)	$HOCl(g)\buildrel {hv} \over \longrightarrow \mathop O\limits^ \bullet H + \mathop C\limits^ \bullet l$	(ii)	Smog
(c)	$CaC{O_3} + {H_2}S{O_4} \to CaS{O_4} + {H_2}O + C{O_2}$	(iii)	Ozone depletion
(d)	$N{O_2}(g)\buildrel {hv} \over \longrightarrow NO(g) + O(g)$	(iv)	Tropospheric pollution

Choose the correct answer from the options given below.

A

(a)-(iii), (b)-(ii), (c)-(iv), (d)-(i)

B

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

C

(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

D

(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)

Question 5: Palette 5/12

NEET 2019 MCQ

Among the following, the one that is not a green house gas is :

A

ozone

B

sulphur dioxide

C

nitrous oxide

D

methane

Question 6: Palette 6/12

NEET 2018 MCQ

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

A

N₂O₅

B

NO₂

C

N₂O

D

NO

Question 7: Palette 7/12

NEET 2017 MCQ

Which of the following is a sink for CO?

A

Microorganisms present in the soil

B

Oceans

C

Plants

D

Haemoglobin

Question 8: Palette 8/12

NEET 2014 MCQ

Which one of the following is not a common component of Photochemical smog?

A

Ozone

B

Acrolein

C

Peroxyacetyl nitrate

D

Chlorofluorocarbons

Question 9: Palette 9/12

NEET 2013 MCQ

Which one of the following statements is not true?

A

Clean water would have a BOD value of 5 ppm.

B

Fluoride deficiency in drinking water is harmful. Soluble fluoride is often used to bring its concentration upto 1 ppm.

C

When the pH of rain water is higher than 6.5, it is called acid rain.

D

Dissolved Oxygen (DO) in cold water can reach a concentration upto 10 ppm.

Question 10: Palette 10/12

NEET 2012 MCQ

Which one of the following statements regarding photochemical smog is not correct?

A

Carbon monoxide does not play any role in photochemical smog formation.

B

Photochemical smog is an oxidation agent in character.

C

Photochemical smof is formed through photochemical reaction involving solar energy.

D

Photochemical smog does not cause irritation in eyes and throat.

Question 11: Palette 11/12

NEET 2011 MCQ

Which one of the following statement is not true?

A

pH of drinking water should be between 5.5 $-$ 9.5

B

Concentration of DO below 6 ppm is good for the growth of fish.

C

Clean water would have a BOD value of less than 5 ppm.

D

Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant.

Question 12: Palette 12/12

NEET 2008 MCQ

Green chemistry means such reactions which

A

are related to the depletion of ozone layer

B

study the reactions in plants

C

produce colour during reactions

D

reduce the use and production of hazardous chemicals.