Tag: zoology

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Questions Related to zoology

Multiple choice zoology environmental issues air pollution and its control air pollution - effects and control not for breathing not for drinking

Air pollution management for particulate matter is carried out by devices such as arresters. The device which is not an example of arrester is:

  1. Cyclonic seperator

  2. Scrubber seperator

  3. Gravity settling chamber

  4. Teflon porous bags or filters
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Scrubber separator is a type of dust separator device and not particulate matter separator.

So, the correct answer is 'scrubber separator'

Multiple choice zoology environmental issues air pollution and its control air pollution - effects and control not for breathing not for drinking

Air pollution from automobiles can be controlled by fitting

  1. Cyclone separator

  2. Electrostatic precipitator

  3. Catalytic converter

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

A catalytic converter is an emissions control device that converts toxic pollutants in exhaust gas to less toxic pollutants by catalyzing a redox reaction 

Multiple choice zoology environmental issues air pollution and its control air pollution - effects and control not for breathing not for drinking

Which of the following reduce(s) air pollution?
(i) Using an incinerator
(ii) Using renewable energy
(iii) Fixing catalytic converters in vehicles

  1. Only (i)

  2. (ii) and (iii)

  3. (i) and (iii)

  4. (i), (ii) and (iii)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Incinerators are used to burn garbage which produces toxic ash, nitrogen oxides, carbon dioxides etc and thus, contributes to the air pollution. This method is mainly used to reduce solid wastes. Using renewable energy like solar and wind energy are the natural energy source that does not contribute to the air pollution. Catalytic converters reduce air pollution as it converts the harmful gas into the useful like it converts the carbon monoxide into the carbon dioxide which then absorbed by the plants. Thus, the correct answer is option B.

Multiple choice zoology environmental issues air pollution and its control air pollution - effects and control not for breathing not for drinking

Cyclone collectors and electrostatic precipitators are meant for controlling.

  1. Sewage pollution

  2. Air pollution

  3. Pesticide pollution

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

A cyclonic separation is a method of removing particulates from an air stream, without the use of filters, through vortex separation. 

An electrostatic precipitator is a device that removes suspended dust particles from a gas or exhaust by applying a high-voltage electrostatic charge and collecting the particles on charged plates.
Both are instruments in controlling air pollution in industries.
So, the correct option 'Air pollution'.

Multiple choice zoology environmental issues air pollution and its control air pollution - effects and control not for breathing not for drinking

Bag filters are used for removal of pollutants from

  1. Exhaust emissions

  2. Effluent water

  3. Sewage water

  4. Both B and C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Exhaust emissions are the substances or gases that are released on burning of fuels.
B. Effluent water is the wastewater which is released in water bodies after treatment in sewage treatment plant so that harmful contaminants get removed from it.
C. Sewage water is the wastewater which is produced by a community of people.
Bag filters are the equipments used to control air pollution. They control the level of exhaust emissions such as sulphur dioxide and other gases.
So, the correct answer is 'Exhaust emissions'.
Multiple choice zoology not for breathing not for drinking air pollution and its control air pollution - effects and control environmental issues

All except one mentioned below is an incorrectly mentioned rule framed under Environment (Protection) act, 1986. Identify it.

  1. Ozone Depleting Substanes Rules, 2000

  2. Harzardous Wastes Rules, 1989

  3. Air Prevention and Control of Pollution Act, 1981

  4. Biomedical Wastes Rules, 1998
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Air Prevention and Control of Pollution Act, 1981 is an Act of the Parliament of India to control and prevent air pollution in India. It is different from the Environment (Protection) act, 1986 and not a part of it.

Multiple choice zoology not for breathing not for drinking air pollution and its control air pollution - effects and control environmental issues

How long does an acid airborne form in atmosphere?

  1. 6 to 7 days

  2. 2 to 5 days

  3. 1 to 2 days

  4. 5 to 6 days
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acid precursors such as sulfur dioxide and nitrogen oxides transform into acid aerosols in the atmosphere and typically remain airborne for 2 to 5 days before being deposited through wet deposition (rain, snow) or dry deposition. This relatively short lifetime affects how far acid pollution can travel.

Multiple choice zoology not for breathing not for drinking air pollution and its control air pollution - effects and control environmental issues

What is 'adiabatic lapse' rate for wet air?

  1. 0.6C per 100meter

  2. 0.9C per 100meter

  3. 0.7C per 100meter

  4. 0.5C per 100meter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The adiabatic lapse rate for wet (saturated) air is approximately 0.6 degrees Celsius per 100 meters, which is lower than the dry adiabatic lapse rate due to the release of latent heat during condensation.

Multiple choice zoology not for breathing not for drinking air pollution and its control air pollution - effects and control environmental issues

Catalytic converter is involved in the control of 

  1. Air pollution

  2. Radioactive pollution

  3. Sewage and chemical from industry

  4. Nuclear pollution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pollution is the addition of contaminants in the environment which degrades its quality. The air pollution is the major threat which needs to be regulated. A catalytic converter is a device used to reduce the emissions from an internal combustion engine (automobiles and vehicles). Enough oxygen is not available to oxidize the carbon fuel in these engines completely into carbon dioxide and water; thus toxic by-products are produced. Catalytic converters are used in exhaust systems to provide a site for the oxidation and reduction of toxic by-products (like nitrogen oxides, carbon monoxide, and hydrocarbons) of fuel into less hazardous substances, such as carbon dioxide, water vapour, and nitrogen gas.

Multiple choice zoology not for breathing not for drinking air pollution and its control air pollution - effects and control environmental issues

The automobile emission can be reduced by adding which of the following in the petrol?

  1. Barium salts

  2. Cadmium salts

  3. Cobalt salts

  4. Silicon 011
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The combustion of the fuel in the automobiles result in the production of emissions which contains toxic gases. The use of barium salts help in the reduction in the emissions from the burning of the fuels like petrol and diesel. However, the emissions which are released along with the barium salts have toxic effects on ingestion. The use of alkali metal salts like sodium, calcium, magnesium, potassium, etc which do not cause any effect are been used nowadays. 

Thus, the correct answer is option A.