Environmental Chemistry Test

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Environmental Chemistry Test - 38

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Weekly Quiz Competition

Question 1
1 / -0

Waste management is ________.

A
to develop products and processes that are kind to the environment. This can involve reducing the waste a process creates, using renewable materials, lessening the energy required to form a product, etc

B
the collection, transportation, disposal or recycling and monitoring of waste

C
the process of creating a clean and green environment

D
None of above

Solution

Waste management is the precise name for the collection, transportation, disposal or recycling and monitoring of waste. This term is assigned to the material, waste material that is produced through human being activity. This material is managed to avoid its adverse effect on human health and environment.
Question 2
1 / -0

Which of the following compounds are toxic?

A
Benzene

B
Toluene

C
Carbon tetrachloride

D
All of the above

Solution

A toxic substance is a substance that can be poisonous or cause health effects.
Benzene is known to cause cancer, based on evidence from studies in both people and lab animals.Basically it is carcinogenic.
Toluene is irritating to the skin, eyes, and respiratory tract. It can cause systemic toxicity by ingestion or inhalation and is slowly absorbed through the skin.
Carbon tetrachloride is one of the most potent hepatotoxins (toxic to the liver), so much so that is widely used in scientific research to evaluate hepatoprotective agents.Exposure to high concentrations of carbon tetrachloride (including vapour) can affect the central nervous system, degenerate the liver and kidneys and prolonged exposure may lead to coma or death.
Question 3
1 / -0

Which of the following is an example of photochemical smog?

A
Ketones

B
Aldehydes

C
Ester

D
None of the above

Solution

Aldehyde is an example of photochemical smog.
During formation of photochemical smog, reactive hydrocarbons containing ($$C=C$$) double bond are converted to aldehydes and aldehydes are subsequently converted to peroxyacetyl nitrate (PAN) which is the chief constituent of photochemical smog.
Question 4
1 / -0

One of the best solutions to get rid of non-biodegradable wastes is:

A
burning

B
dumping

C
burying

D
recycling

Solution

Non-biodegradable waste is that type of waste product is which is not completely decomposed by any process or any living organism. Examples are plastic, polythene.
Burning them releases carbon monoxide which is toxic, so burning cannot be used.
Recycling is the best process of waste management by which we can reuse these wastes.
Question 5
1 / -0

Identify the harmful radiations emitted by the sun.

A
Ultra violet

B
Infra red

C
Visible

D
Radio waves

Solution

The ultraviolet radiations are the harmful rays which are present in the sun rays. The radiations are emitted from the sun and are harmful to living organisms. The ozone layer prevents the entry of these radiations into the Earth's atmosphere. The depletion of the ozone layer allows the radiations to cause harm to the plants and animals on the Earth.
Thus, the correct answer is option A.
Question 6
1 / -0

The pollutant responsible for ozone holes is:

A
CO2

B
$$SO_2$$

C
$$CO$$

D
$$CFC$$
Solution
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion.
Used as coolants in refrigerators, freezers and air conditioners in buildings and cars manufactured before 1995.
Found in industrial solvents, dry-cleaning agents and hospital sterilants.
Also used in foam products — such as soft-foam padding (e.g. cushions and mattresses) and rigid foam (e.g. home insulation).
Question 7
1 / -0

How much % of the atmosphere's mass is contained in the troposphere?

A
20

B
80

C
50

D
60

Solution

The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere.
Question 8
1 / -0

Taj mahal is threatened by which atmospheric pollutant released by Mathura refinery?

A
$$SO_2$$

B
$$CO_2$$

C
$$CO$$

D
$$Cl_2$$

Solution

The air in the area near Taj Mahal contains serious levels of sulphur and nitrogen oxides. This is due to the large number of industries set up nearby and pollution of Yamuna River. As per metrological studies the wind direction is usually move in the direction where Taj is situated. All these led to acid rain. Acid rain reacted with the marble (calcium carbonate) of Taj Mahal and this causing damage to heritage structure.
Question 9
1 / -0

Which of the following statements is/are correct for generating non-biodegradable waste?

A
Thermal power plants producing fly ash

B
Iron and steel plants producing blast furnace slag

C
Metal industries producing mud and tailings

D
All of the above

Solution

Non-biodegradable waste is a type of waste that can not be broken down into its base compounds by micro-organisms, air, moisture or soil in a reasonable amount of time. Non-biodegradable waste is an environmental concern, as it threatens to overwhelm landfills and create disposal problems. Almost all industries generate some amount of non biodegradable waste for eg fly ash,slag,mud which are major concern for the environment.
Question 10
1 / -0

Among the following, which gas can be used as a fuel in the digesting process?

A
$$CO_2$$

B
$$CH_4$$

C
$$O_2$$

D
$$NO$$

Solution

$$\begin{array}{l}\text { In anaerobic digestion, when microorganisms break down } \\\text { organic materials in absence of oxygen then }\\\text { gases like } \mathrm{CH}_{4} \text { (methane) and }\mathrm{CO}_{2} \text { (carbon dioxide) are released. } \\\text { But, aerobic digestion involves consumption of } O \mathrm{_2} \text { and hence } \\\text { is used as a vital fuel during digestion. }\end{array}$$

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Environmental Chemistry Test - 38

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Environmental Chemistry Test - 38

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SHARING IS CARING

Question 1

to develop products and processes that are kind to the environment. This can involve reducing the waste a process creates, using renewable materials, lessening the energy required to form a product, etc

the collection, transportation, disposal or recycling and monitoring of waste

the process of creating a clean and green environment

None of above

Solution

Question 2

Benzene

Toluene

Carbon tetrachloride

All of the above

Solution

Question 3

Ketones

Aldehydes

Ester

None of the above

Solution

Question 4

burning

dumping

burying

recycling

Solution

Question 5

Ultra violet

Infra red

Visible

Radio waves

Solution

Question 6

CO2CO2

$$SO_2$$

$$CO$$

$$CFC$$

Solution

Question 7

20

80

50

60

Solution

Question 8

$$SO_2$$

$$CO_2$$

$$CO$$

$$Cl_2$$

Solution

Question 9

Thermal power plants producing fly ash

Iron and steel plants producing blast furnace slag

Metal industries producing mud and tailings

All of the above

Solution

Question 10

$$CO_2$$

$$CH_4$$

$$O_2$$

$$NO$$

Solution

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