Atmospheric Pollution

Interactive Feed

JEE Main 2021

The depositions of $X$ and $Y$ on ground surfaces is referred to as wet and dry depositions, respectively. $X$ and $Y$ are

X = Ammonium salts, Y = CO_{2}

(B)

X = SO_{2}, Y = Ammonium salts

(C)

X = Ammonium salts, Y = SO_{2}

(D)

X = CO_{2}, Y = SO_{2}

JEE Main 2019

LEVELJEE Main

The reaction that is not involved in the ozone layer depletion mechanism in the stratosphere is

(A)

C H_{4} + 2 O_{3} \to 3 C H_{2} = O + 3 H_{2} O

(B)

C l O^{∙} (g) + O (g) \to C l^{∙} (g) + O_{2} (g)

(C)

H O C l (g) h ν O H^{∙} (g) + C l^{∙} (g)

(D)

C F_{2} C l_{2} (g) h ν C l^{∙} (g) + C F_{2} C l^{∙} (g)

LEVELJEE Main

Identify the wrong statements in the following

(A)

Chlorofluorocarbons are responsible for ozone layer depletion

(B)

Green house effect is responsible for global warming

(C)

Ozone layer does not permit infrared radiation from the sun to reach the earth

(D)

Acid rain is mostly because of oxides of nitrogen and sulphur

JEE Main 2019

LEVELBoard

Excessive release of $CO_{2}$ into the atmosphere results in

Given below are two statements. Statement I The pH of rain water is normally ~ 5.6. Statement II If the pH of rain water drops below 5.6, it is called acid rain. In the light of the above statements, choose the correct answer from the options given below.

(A)

Both statements I and II are true.

(B)

Both statements I and II are false.

(C)

Statement I is true but statement II is false.

(D)

Statement I is false but statement II is true.

JEE Main 2019

LEVELBoard

CF_{2} Cl_{2}

(B)

H_{3} C - C (= O) - OONO_{2}

(C)

CH_{2} = CHCHO

(D)

O_{3}

JEE Main 2021

LEVELJEE Main

The gas released during anaerobic degradation of vegetation may lead to

(A)

acid rain

(B)

global warming and cancer

The greenhouse gas/es is (are) (A) carbon dioxide (B) oxygen (C) water vapour (D) methane Choose the most appropriate answer from the options given below.

Assertion (A) Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Reason (R) The reaction between nitrogen and oxygen requires high temperature.

(A)

Both Assertion and Reason are correct and the reason is the correct explanation for the Assertion.

(B)

Both Assertion and Reason are correct but the reason is not the correct explanation for the Assertion.

(C)

The Assertion is incorrect but the Reason is correct.

(D)

Both the Assertion and Reason are incorrect.

JEE Main 2021

LEVELJEE Main

The gas 'A' is having very low reactivity reaches to stratosphere. It is non-toxic and non-flammable but dissociated by UV-radiations in stratosphere. The intermediates formed initially from the gas 'A' are

(A)

\dot{C} l O + \dot{C} F_{2} C l

(B)

\dot{C} l O + \dot{C} H_{3}

(C)

\dot{C} H_{3} + \dot{C} F_{2} C l

(D)

\dot{C} l + \dot{C} F_{2} C l

LEVELJEE Main

The smog is essentially caused by the presence of

(A)

O_{2}

and

O_{3}

(B)

O_{2}

and

N_{2}

(C)

oxides of sulphur and nitrogen

(D)

O_{3}

and

N_{2}

LEVELJEE Main

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

(A)

slightly lower than that of rain water without thunderstorm

(B)

slightly higher than that when the thunderstorm is not there

(C)

uninfluenced by occurrence of thunderstorm

(D)

which depends on the amount of dust in air

JEE Main 2019

LEVELJEE Main

Air pollution that occurs in sunlight is

The correct set of species responsible for the photochemical smog is

(A)

N_{2}, NO_{2}

and hydrocarbons

(B)

CO_{2}, NO_{2}, SO_{2}

and hydrocarbons

(C)

NO, NO_{2}, O_{3}

and hydrocarbons

(D)

N_{2}, O_{2}, O_{3}

and hydrocarbons

JEE Main 2019

LEVELJEE Main

Peroxyacetyl nitrate (PAN), an eye irritant is produced by

Given below are two statements: Statement I An allotrope of oxygen is an important intermediate in the formation of reducing smog. Statement II Gases such as oxides of nitrogen and sulphur present in troposphere contribute to the formation of photochemical smog. In the light of the above statements, choose the correct answer from the options given below.

(A)

Both statement I and statement II are true.

(B)

Both statement I and statement II are false.

(C)

Statement I is true but statement II is false.

(D)

Statement I is false but statement II is true.

JEE Main 2019

LEVELJEE Main

The upper stratosphere consisting of the ozone layer protects us from the sun's radiation that falls in the wavelength region of

The pH of rain water, is approximately

Assertion (A) Ozone is destroyed by CFCs in the upper stratosphere. Reason (R) Ozone holes increase the amount of UV radiation reaching the earth.

(A)

Assertion and Reason are incorrect.

(B)

Assertion and Reason are both correct and the Reason is the correct explanation for the Assertion.

(C)

Assertion and Reason are correct, but the Reason is not the explanation for the Assertion.

(D)

Assertion is false, but the Reason is correct.

JEE Main 2020

LEVELJEE Main

The statement that is not true about ozone is

(A)

in the stratosphere, CFCs release chlorine free radicals (Cl), which reacts with

O_{3}

to give chlorine dioxide radicals

(B)

in the atmosphere, it is depleted by CFCs

(C)

in the stratosphere, it forms a protective shield against UV radiation.

(D)

it is a toxic gas and its reaction with NO gives

NO_{2}

JEE Main 2021

LEVELBoard

The type of pollution that gets increased during the day time and in the presence of $O_{3}$ is

The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was

The layer of atmosphere between 10 km to 50 km above the sea level is called as

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } The depositions of X and Y on ground surfaces is referred to as wet and dry depositions, respectively. X and Y are

The reaction that is not involved in the ozone layer depletion mechanism in the stratosphere is

Identify the wrong statements in the following

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } Excessive release of CO2​ into the atmosphere results in

Given below are two statements. Statement I The pH of rain water is normally ~ 5.6. Statement II If the pH of rain water drops below 5.6, it is called acid rain. In the light of the above statements, choose the correct answer from the options given below.

Taj Mahal is being slowly disfigured and discoloured. This is primarily due to

The primary pollutant that leads to photochemical smog is

The compound that is not a common component of photochemical smog is

The gas released during anaerobic degradation of vegetation may lead to

The greenhouse gas/es is (are) (A) carbon dioxide (B) oxygen (C) water vapour (D) methane Choose the most appropriate answer from the options given below.

Assertion (A) Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Reason (R) The reaction between nitrogen and oxygen requires high temperature.

The gas 'A' is having very low reactivity reaches to stratosphere. It is non-toxic and non-flammable but dissociated by UV-radiations in stratosphere. The intermediates formed initially from the gas 'A' are

The smog is essentially caused by the presence of

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Air pollution that occurs in sunlight is

The correct set of species responsible for the photochemical smog is

Peroxyacetyl nitrate (PAN), an eye irritant is produced by

The upper stratosphere consisting of the ozone layer protects us from the sun's radiation that falls in the wavelength region of

The pH of rain water, is approximately

Assertion (A) Ozone is destroyed by CFCs in the upper stratosphere. Reason (R) Ozone holes increase the amount of UV radiation reaching the earth.

The statement that is not true about ozone is

.math-text-wrapper .katex { font-size: 1.05em !important; } .math-text-wrapper .katex-display { margin: 1rem 0 !important; } The type of pollution that gets increased during the day time and in the presence of O3​ is

The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was

The layer of atmosphere between 10 km to 50 km above the sea level is called as

The depositions of $X$ and $Y$ on ground surfaces is referred to as wet and dry depositions, respectively. $X$ and $Y$ are

Excessive release of $CO_{2}$ into the atmosphere results in

The type of pollution that gets increased during the day time and in the presence of $O_{3}$ is