Tag: economics

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Questions Related to economics

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Acid rains are produced by

  1. Excess $NO _2$ and $SO _2$ from burning fossil fuels
  2. Excess production of $NH _3$ by industry and coal gas

  3. Excess release of carbon monoxide by incomplete combustion
  4. Excess formation of $CO _2$ by combustion and animal respiration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When the industrial activities use the fossil fuels, the excess of this usage results in the release of oxides of nitrogen and oxides of sulphur. These condense around in the troposphere and react with water to form the nitric acid, nitrous acid, and sulphuric acid. These acids precipitate with rain to form the acid rain. Acid rain is corrosive to the tissues, buildings etc.

Hence, the correct answer is 'Excess NO$ _{2}$ and SO$ _{2}$ from burning fossil fuels'.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Corrosion of statues and monuments occurs due to

  1. Photochemical smog

  2. Carbon monoxide

  3. Acid rain

  4. Methane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Acid rain is rich in sulphuric acid and nitric acid. These acids have corrosive effects on the building material. They get deposited on the limestone, sandstone, marble etc. and increase their corrosion when exposed to the rain and fog.

A. Photochemical smog causes respiratory illness.
B. Carbon monoxide causes a lack of oxygen in the body.
C. Acid rain corrodes the statues and monuments.
D. Methane is a greenhouse gas.
So, the correct answer is 'Acid rain'

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Which of the following gases cause acid rain?

  1. Carbon monoxide and carbon dioxide

  2. Sulphur dioxide and oxides of nitrogen

  3. Oxides of nitrogen and carbon dioxide

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The fossils burn in the atmosphere and forms oxides. These oxides combine with the precipitation and forms acids. This acid falls on earth as acid rain. The acid rain harms the flora and fauna. It also causes skin diseases.

So, the correct answer is option B.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Etching of marble, limestone, jewellery, etc., is caused by pollutant.

  1. $CO _2$

  2. CO
  3. $SO _2$
  4. $CH _4$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Acidic compounds such as sulphuric acids and nitric acids are corrosive in nature and cause etching of marble, limestone and jewellery.

These are formed by oxides of nitrogen and sulphur and are corrosive.
So, the correct option is SO$ _2$.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Acid rain is caused by

  1. $SO _2$ and $SO _3$
  2. $SO _2$ and CO
  3. $NH _3$ and CO
  4. $SO _2$ and $NH _3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Acid rain is caused by the chemical reaction. Basically, rain that has unusually low pH is called acid rain. The most common chemicals that cause acid rain are sulphur oxides and nitric oxides. These substances rise high in the atmosphere where they react with water, oxygen and other chemicals to form more acidic pollutant. Sulphur dioxide on reaction with water and oxygen forms sulphur trioxide which is rapidly converted into sulphuric acid in presence of water.

Hence, the correct answer is 'SO$ _{2}$ and SO$ _{3}$'.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

The term acid rain was given by

  1. Fourier

  2. Angus

  3. Tyndall

  4. Linnaeus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The term acid rain was coined in 1872 by Robert Angus Smith. The acid rain is contains water having pH around 5.6. When the air pollutants like oxides of nitrogen and oxides of sulphur reach the troposphere, they react with the water or moisture and forms acids like nitric acid, nitrous acid or sulphuric acid. These acids then precipitate with the rain to form the acid rain. Hence, the correct answer is 'Angus'.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

How does acid precipitation(acid rain) affect plants?

  1. It releases H$+$ ions, thereby increasing the of rate photophosphorylation in green cells

  2. It precipitates organic acids in palisades cells of leaves, thereby inhibiting respiration

  3. It injuries foliage leading to reduction in photosynthesis, biomass and occasionally death

  4. It precipitates toxic nutrients in soil leading to growth inhibition in trees
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Acid rains are produced by

  1. Excess $ { NO } _{ x } $ and $ { SO }_{ 2 } from burning fossil fuels
  2. Excess production of $ { NH } _{ 3 } $ by industries and power plants

  3. Excess release of carbon monoxide by incomplete combustion of fossil fuels
  4. Excess release of $ { CO } _{ 2 } $ by combustion and animal respiration.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Acid rain is caused by large-scale emission of acidic gases into the atmosphere from thermal power plants, industries, and automobiles. The common ones are sulfur dioxide, nitrogen oxides NOx, volatile organic carbons VOCs and hydrogen chloride. NOx is also produced in the atmosphere through lightning. Sulfur dioxide and nitrogen oxides are changed in the atmosphere into sulphuric acid and nitric acid by combining with oxygen and water.

So, the correct answer is 'Excess NOx and $ { SO }_{ 2 } from burning fossil fuels'.

Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

Which of the following causes regional pollution?

  1. Smog

  2. Acid rain
  3. $O _3$ layer depletion

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Smog is formed of smoke and fog and is particularly a pressing problem for large metropolitan cities. The constituents of smog are ground-level ozone, carbon monoxide, nitrogen oxides and volatile organic compounds. The sources of these pollutants are emissions from vehicles, smokestack emission paints etc. 
Acid rain is formed when sulphur dioxide and nitrogen oxides react with water and oxygen forming more acidic pollutant. Areas having industrial abundance are prone to acid rains. The major sources are coal-fired power plants, burning of fossil fuels etc.
Hence, the correct answer is 'Both A and B'
Multiple choice economics environmental economics acid rain air pollution - effects and control air pollution and its effects

In acid rain, $SO _2$, sulphuric acid accounts for

  1. $100\%$
  2. $30\%$
  3. $50\%$
  4. $70\%$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acid rain is caused by a chemical reaction. Basically, rain that has unusually low pH is called acid rain. The most common chemicals that cause acid rain are sulphur oxides and nitric oxides. These substances rise high in the atmosphere where they react with water, oxygen and other chemicals to form more acidic pollutant. Sulphur dioxide on reaction with water and oxygen forms sulphur trioxide which is rapidly converted into sulphuric acid in presence of water. It accounts for 70% volume in acid rain.

Hence, the correct answer is '70%'.