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Match List -I with List -II:

Choose the correct answer from the options given below:

The measured BOD values for four different water samples (\( \mathrm{A-D} \)) are as follows: \( \mathrm{A} = 3 \,\mathrm{ppm} \); \( \mathrm{B} = 18 \,\mathrm{ppm} \); \( \mathrm{C} = 21 \,\mathrm{ppm} \); \( \mathrm{D} = 4 \,\mathrm{ppm} \). The water samples which can be called as highly polluted with organic wastes, are:

\(\overset{\bullet}{\text{Cl}} + \mathrm{CH_4} \rightarrow A + B \)
A and B in the above atmospheric reaction step are:

Match List-I with List-II.

Choose the correct answer from the options given below:

Match List-I with List-II.

List-I	List-II
(A) Sulphate	(I) Pesticide
(B) Fluoride	(II) Bending of bones
(C) Nicotine	(III) Laxative effect
(D) Sodium arsinite	(IV) Herbicide

Choose the correct answer from the options given below:

Some gases are responsible for heating of atmosphere (green house effect). Identify from the following the gaseous species which does not cause it.

Correct statement about photo-chemical smog is:

Match List I with List II

List-I Pollutant	List II Source
A. Microorganisms	I. Strip mining
B. Plant nutrients	II. Domestic sewage
C. Toxic heavy metals	III. Chemical fertilizer
D. Sediment	IV. Chemical factory

Choose the correct answer from the options given below:

Which among the following pairs has only herbicides?

10.

The eutrophication of water body results in :

11.

Match List I with List II:

List – I (Pollutant)	List – II (Disease / Sickness)
(a) Sulphate (\( > 500 \, \text{ppm} \))	(i) Methemoglobinemia
(b) Nitrate (\( > 50 \, \text{ppm} \))	(ii) Brown mottling of teeth
(c) Lead (\( > 50 \, \text{ppb} \))	(iii) Laxative effect
(d) Fluoride (\( > 2 \, \text{ppm} \))	(iv) Kidney damage

Choose the correct answer from the options given below:

12.

Given below are two statements:
Statement I: The non bio-degradable fly ash and slag from steel industry can be used by cement industry.
Statement II: The fuel obtained from plastic waste is lead free.
In the light of the above statements, choose the most appropriate answer from the options given below:

13.

Sulphur dioxide is one of the components of polluted air. \( \mathrm{SO_2} \) is also a major contributor to acid rain. The correct and complete reaction to represent acid rain caused by \( \mathrm{SO_2} \) is:

14.

Given below are two statements:
Statement I: In polluted water values of both dissolved oxygen and BOD are very low.
Statement II : Eutrophication results in decrease in the amount of dissolved oxygen.
In the light of the above statements, choose the most appropriate answer from the options given below:

15.

Given below are two statements: one is labeled as Assertion A and the other is labeled as Reason R.
Assertion A: Polluted water may have a value of BOD of the order of \( 17 \) ppm.
Reason R: BOD is measure of oxygen required to oxidise both the biodegradable and non-biodegradable organic material in water.
In the light of the above statements, choose the most appropriate answer from the options given below.

16.

The acid that is believed to be mainly responsible for the damage of Taj Mahal is:

17.

The photochemical smog does not generally contain:

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JEE Main 2022 25th June Morning Shift

The eutrophication of water body results in :

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