Tag: for a pollution free nature

Questions Related to for a pollution free nature

The medium which is effected by a pollutants is called________.

chemistry air environment and pollution environment pollution for a pollution free nature

  1. receptor

  2. sink

  3. both $A$ and $B$

  4. system

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Correct Option: A
Explanation:

The medium which is effected by pollutants is called as receptor.
Hence option A is correct.

Natural source of pollution is:

chemistry air environment and pollution environment pollution for a pollution free nature

  1. rain forest

  2. mining of minerals

  3. forest fire

  4. falling of meteoroids

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Correct Option: C
Explanation:

Forest fires are one of the main natural sources of pollution. The forests catch fire due to high temperature in summers

Which of the following is not regarded as a pollutant?

chemistry air environment and pollution environment pollution for a pollution free nature

  1. $NO _{2}$

  2. $CO _{2}$

  3. $SO _{2}$

  4. CO

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Correct Option: B
Explanation:

Pollutants can be classified as solid, gaseous or liquid pollutants. Also, it can be classified as physical, chemical and biological. They can be further classified as degradable and non-degradable. $NO _2$, $SO _2$  and CO are gases which if present in great quantity in the atmosphere can cause pollution.

Match the column I with column II and mark the appropriate choice.

Column I Column II
(A) Biodegradable pollutants (i) DDT
(B) Non-biodegradable pollutants (ii) $SO _{2}$
(C) Primary pollutants (iii) PAN
(D) Secondary pollutants (iv) Sewage
chemistry air environment and pollution environment pollution for a pollution free nature

  1. (A) $\rightarrow$ (iii), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (ii), (D) $\rightarrow$ (i)

  2. (A) $\rightarrow$ (ii), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (iv), (D) $\rightarrow$ (i)

  3. (A) $\rightarrow$ (i), (B) $\rightarrow$ (ii), (C) $\rightarrow$ (iii), (D) $\rightarrow$ (iv)

  4. (A) $\rightarrow$ (iv), (B) $\rightarrow$ (i), (C) $\rightarrow$ (ii), (D) $\rightarrow$ (iii)

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Correct Option: D
Explanation:

Sewage is a biodegradable pollutant which can be degraded. DDT is a type of non biodegradable pollutant. $ S0 _2 $ is a primary pollutant, affecting the environment. PAN is considered as a secondary pollutants among all the pollutants. 

Match the upper limit concentration of the pollutants given in column I with column II and mark the appropriate choice.

Column I Column II
(A) Lead (i) 500 ppm
(B) Sulphate (ii) 10 ppm
(C) Nitrate (iii) 50 ppb
(D) Fluoride (iv) 50 ppm
chemistry air environment and pollution environment pollution for a pollution free nature

  1. (A) $\rightarrow$ (ii), (B) $\rightarrow$ (iii), (C) $\rightarrow$ (i), (D) $\rightarrow$ (iv)

  2. (A) $\rightarrow$ (iii), (B) $\rightarrow$ (i), (C) $\rightarrow$ (iv), (D) $\rightarrow$ (ii)

  3. (A) $\rightarrow$ (i), (B) $\rightarrow$ (iv), (C) $\rightarrow$ (iii), (D) $\rightarrow$ (ii)

  4. (A) $\rightarrow$ (iv), (B) $\rightarrow$ (ii), (C) $\rightarrow$ (iii), (D) $\rightarrow$ (i)

Show answer
Correct Option: B
Explanation:

The concentration of pollutants like lead is 50 ppb. So the water gets contaminated with lead. The concentration of sulphate is 500 ppm. The concentration of nitrate is 50 ppm. Concentration of fluoride is 10 ppm. 

The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants. Which of the following belongs to secondary air pollutants? 

chemistry air environment and pollution environment pollution for a pollution free nature

  1. $CO$

  2. $Hydrocarbon$

  3. $Peroxyacetyle\ nitrate\ (PAN)$

  4. $NO$

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Correct Option: D
Explanation:
The correct answer is NO (nitrogen oxide) which reacts with oxygen to form nitrogen dioxide, participate in a complex of ultraviolet-driven photochemical reactions. and it also forms acid rain when it reacts with water.

Dysentery and cholera are caused by drinking polluted water.

chemistry water too little to waste effects and conservation of water pollution water pollution, its effects and cures for a pollution free nature

  1. True

  2. False

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Correct Option: A
Explanation:

Contaminated water can cause many types of diarrheal diseases, including cholera, and other serious illness such as guinea worm diseases, typhoid, and dysentery.

Water pollution is the second most imperative environmental concern along with ____ pollution.

chemistry water too little to waste effects and conservation of water pollution water pollution, its effects and cures for a pollution free nature

  1. noise

  2. air

  3. soil

  4. none of the above

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Correct Option: B
Explanation:

Water pollution is the second most imperative environmental concern along with air pollution.

Industrial or man-made concentrations of naturally occurring substances, such as_____ and _____ have also been identified as health hazards in soil and groundwater.

chemistry water too little to waste effects and conservation of water pollution water pollution, its effects and cures for a pollution free nature

  1. Carbon and ammonia

  2. Ammonia and nitrates

  3. Oxides and ammonia

  4. Carbon and nitrates

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Correct Option: B
Explanation:

Industrial or man-made concentrations of naturally occurring substances, such as nitrate and ammonia associated with livestock manure from agricultural operations, have also been identified as health hazards in soil and groundwater.

Chronic exposure to ______ at sufficient concentrations is known to be associated with higher incidence of leukemia.

chemistry water too little to waste effects and conservation of water pollution water pollution, its effects and cures for a pollution free nature

  1. sodium

  2. benzene

  3. methane

  4. all of above

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Correct Option: B
Explanation:

Contaminated or polluted soil directly affects human health through direct contact with soil, or via inhalation of soil contaminants which have vaporized. Chronic exposure to benzene at sufficient concentrations is known to be associated with higher incidence of leukemia.