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JEE Main Environmental Chemistry Practice Questions With Solutions

Updated By Diksha Sharma on 07 Jan, 2025 21:16

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JEE Main Chemistry Environmental Chemistry Practice Questions

Mathematics Physics

Question 1.

The possibility of photochemical smog formation will be minimum at :

Mumbai in May

Kolkata in October

New-Delhi in August (Summer)

Srinagar, Jammu and Kashmir in January

Question 2.

Which of the following are the Green house gases?

A. Water vapour

B. Ozone

C. I $_{2}$

D. Molecular hydrogen

Choose the most appropriate answer from the options given below :

A and D only

A and B only

B and C only

C and D only

Question 3.

The radical which mainly causes ozone depletion in the presence of UV radiations is :

{NO}^{\cdot}

{CH}_{3}^{\cdot}

\dot{Cl}

\dot{O} H

Question 4.

Match List I with List II

	LIST I		LIST II
A.	Nitrogen oxides in air	I.	Eutrophication
B.	Methane in air	II.	pH of rain water becomes 5.6
C.	Carbon dioxide	III.	Global warming
D.	Phosphate fertilisers in water	IV.	Acid rain

Choose the correct answer from the options given below :

A-II, B-III, C-I, D-IV

A-I, B-II, C-III, D-IV

A-IV, B-II, C-III, D-I

A-IV, B-III, C-II, D-I

Question 5.

Which of the following compounds is an example of Freon?

C_{2} H_{2} F_{2}

C_{2} {HF}_{3}

C_{2} F_{4}

C_{2} {Cl}_{2} F_{2}

Question 6.

Given below are two statements:

Statement I : If BOD is 4 ppm and dissolved oxygen is 8 ppm, then it is a good quality water.

Statement II : If the concentration of zinc and nitrate salts are $5 ppm$ each, then it can be a good quality water.

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

Statement I is incorrect but Statement II is correct

Both the statements I and II are incorrect

Both the statements I and II are correct

Statement I is correct but Statement II is incorrect

Question 7.

The delicate balance of ${CO}_{2}$ and $O_{2}$ is NOT disturbed by :

Burning of Coal

Burning of petroleum

Respiration

Deforestation

Question 8.

Match List I with List II

	List I Industry		List II Waste Generated
(A)	Steel plants	(I)	Gypsum
(B)	Thermal power plants	(II)	Fly ash
(C)	Fertilizer industries	(III)	Slag
(D)	Paper mills	(IV)	Bio-degradable wastes

Choose the correct answer from the options given below :

(A)-(III), (B)-(II), (C)-(I), (D)-(IV)

(A)-(III), (B)-(IV), (C)-(I), (D)-(II)

(A)-(IV), (B)-(I), (C)-(II), (D)-(III)

(A)-(II), (B)-(III), (C)-(IV), (D)-(I)

Question 9.

Which of these reactions is not a part of breakdown of ozone in stratosphere?

C F_{2} C l_{2} (g) \overset{uv}{⟶} \overset{∙}{C} l (g) + \overset{∙}{C} F_{2} Cl (g)

C \overset{∙}{l} (g) + O_{3} (g) \overset{}{⟶} Cl \overset{∙}{O} (g) + O_{2} (g)

2 Cl \overset{∙}{O} \overset{}{⟶} Cl O_{2} (g) + C \overset{∙}{l} (g)

Cl \overset{∙}{O} (g) + O (g) \overset{}{⟶} C \overset{∙}{l} (g) + O_{2} (g)

Question 10.

Match List I with List II:

	LIST I (Species)		LIST II (Maximum allowed concentration in ppm in drinking water)
A.	$F^{-}$	I.	< 50 ppm
B.	${SO}_{4}^{2 -}$	II.	< 5 ppm
C.	${NO}_{3}^{-}$	III.	< 2 ppm
D.	$Zn$	IV.	< 500 ppm

Choose the correct answer from the options given below :

A-IV, B-III, C-II, D-I

A-I, B-II, C-III, D-IV

A-II, B-I, C-III, D-IV

A-III, B-IV C-I, D-II

Question 1.

The possibility of photochemical smog formation is more at :

Industrial areas

Himalayan villages in winter

The places with healthy vegetation

Marshy lands

Question 2.

The industrial activity held least responsible for global warming is :

manufacturing of cement

Electricity generation in thermal power plants

steel manufacturing

Industrial production of urea

Question 3.

How can photochemical smog be controlled?

By using catalytic convertors in the automobiles/industry.

By complete combustion of fuel.

By using tall chimneys.

By using catalyst.

Question 4.

Identify X, Y and Z in the following reaction. (Equation not balanced)

JEE Main 2023 (Online) 31st January Morning Shift Chemistry - Environmental Chemistry Question 19 English

X = {ClONO}_{2}, Y = HOCl, Z = {NO}_{2}

X = {ClNO}_{3}, Y = {Cl}_{2}, Z = {NO}_{2}

X = {ClONO}_{2}, Y = HOCl, Z = {HNO}_{3}

X = {ClNO}_{2}, Y = HCl, Z = {HNO}_{3}

Question 5.

The water quality of a pond was analyzed and its BOD was found to be 4. The pond has :

Very clean water

Highly polluted water

Water has high amount of fluoride compounds

Slightly polluted water

Question 6.

Formation of photochemical smog involves the following reaction in which $A, B$ and $C$ are respectively.

$\begin{aligned} i. {NO}_{2} \overset{h v}{⟶} A + B \\ ii. B + O_{2} \to C \\ iii. A + C \to {NO}_{2} + O_{2} \end{aligned}$

Choose the correct answer from the options given below :

NO, O & O_{3}

N, O_{2} & O_{3}

O, N_{2} O & NO

O, NO & {NO}_{3}^{-}

Question 7.

The concentration of dissolved Oxygen in water for growth of fish should be more than $\underset{―}{X}$ ppm and Biochemical Oxygen Demand in clean water should be less than $\underset{―}{Y}$ ppm. X and Y in ppm are, respectively.

$X$	$Y$
4	15

$X$	$Y$
4	8

$X$	$Y$
6	12

$X$	$Y$
6	5

Question 8.

Correct statement about smog is :

_{2}

is present in classical smog

Both NO

_{2}

and SO

_{2}

are present in classical smog

Photochemical smog has high concentration of oxidizing agents

Classical smog also has high concentration of oxidizing agents

Question 9.

Some reactions of NO $_{2}$ relevant to photochemical smog formation are

JEE Main 2023 (Online) 25th January Morning Shift Chemistry - Environmental Chemistry Question 14 English

Identify A, B, X and Y :

X = [O], Y = NO, A = O_{2}, B = O_{3}

X = N_{2} O, Y = [O], A = O_{3}, B = NO

X = \frac{1}{2} O_{2}, Y = N O_{2}, A = O_{3}, B = O_{2}

X = NO, Y = [O], A = O_{2}, B = N_{2} O_{3}

Question 10.

Correct statement is :

An average human being consumes more food than air

An average human being consumes 100 times more air than food

An average human being consumes nearly 15 times more air than food

An average human being consumes equal amount of food and air

JEE Main Environmental Chemistry Practice Questions With Solutions

JEE Main Chemistry Environmental Chemistry Practice Questions

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Question 7.

Question 8.

Question 9.

Question 10.

Question 1.

Question 2.

Question 3.

Question 4.

Question 5.

Question 6.

Question 7.

Question 8.

Question 9.

Question 10.

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