Tag: water too little to waste

Questions Related to water too little to waste

Which of the following pollutants cannot be degraded by natural process?

chemistry water too little to waste pollution of water water pollution planet earth

  1. DDT

  2. Nuclear Waste

  3. Heavy Metals

  4. All of the above

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Correct Option: D
Explanation:

Pollutants which are slowly degradable remain in the environment in an unchanged form for many decades. For example, substances such as dichlorodiphenyltrichloroethane (DDT), plastic materials, heavy metals, many chemicals, and nuclear wastes etc., once released into the environment are difficult to remove. These pollutants cannot be degraded by natural processes and are harmful to living organisms. In the process of environmental pollution, pollutants originate from a source and get transported by air or water or are dumped into the soil by human beings.

Water is becoming scarce due to increase in :

chemistry water too little to waste pollution of water water pollution planet earth

  1. population

  2. industries

  3. agricultural activities

  4. All of the above

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Correct Option: D

Which of the following industries may be a reason for water scarcity?

chemistry water too little to waste pollution of water water pollution planet earth

  1. Chemical industry

  2. Pharmaceutical industry

  3. Textile industry

  4. All of the above.

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Correct Option: D
Explanation:

All these industries cause water pollution by the water discharged into the rivers. The common industrial pollutants are sulphur, asbestos, poisonous solvents, poly-chlorinated biphenyl, lead, mercury, volatile organic chemicals, etc.

______ is the contamination of water by substances harmful to life.

chemistry water too little to waste pollution of water water pollution planet earth

  1. Water pollution

  2. Air pollution

  3. Noise pollution

  4. None of the above

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Correct Option: A
Explanation:

Water pollution is the contamination of water by substances harmful to life.

Pollution of water due to agricultural operations can be minimized by using:

chemistry water too little to waste pollution of water water pollution planet earth

  1. pesticides

  2. fertilizers

  3. all of the above

  4. none of the above

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Correct Option: D
Explanation:

Pesticides and fertilizers containing chemicals causes water pollution. Pesticides contaminate water as the pesticides are toxic. Fertilizers contain nitrogen and phosphorous, high amount of which is injurious to the underwater organisms. Therefore, the answer is D.

Choose the correct statement(s).

chemistry water too little to waste pollution of water water pollution planet earth

  1. Aldrin is used as a pesticide.

  2. The maximum permissible limit of nitrate in water is 50 ppm.

  3. The maximum permissible limit of fluoride is 6 ppm.

  4. All of the above

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Correct Option: A,B
Explanation:

A) Aldrin is a pesticide used to control soil insects such as termites, corn rootworm, wireworms, rice water weevil and grasshoppers.
B) The maximum permissible limits for nitrite and nitrate are 10 ppm and 50 ppm respectively.
C) The maximum permissible limit of fluoride is 2 ppm.

Use of pesticides decreases water pollution.

chemistry water too little to waste pollution of water water pollution planet earth

  1. True

  2. False

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Correct Option: B
Explanation:

Pesticides are the chemical compounds that are used to kill pests, including insects, rodents, fungi, and weeds.

They contain chemicals in it and the process used may lead to water pollution.

Water pollution can be classified into chemical and thermal pollution.

Is the above statement correct?

chemistry water too little to waste pollution of water water pollution planet earth

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Water pollution caused due to the chemicals such as the chemical waste from the industries, chemicals used in agriculture such as pesticides, herbicides, etc. All these results in chemical water pollution.

Thermal water pollution is caused by the radioactive wastes that are emitted to the water which results in degradation of the water quality.

Rich in lather, mixed with oil, black-brown water that goes down the drains from ________ is dirty. It is called waste water.

chemistry water too little to waste pollution of water water pollution planet earth

  1. sinks

  2. toilets, showers

  3. laundries

  4. all of the above

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Correct Option: D
Explanation:

These type of waste water causes the water pollution. It usually gives negative impact on our environment and not good for aquatic life.

Water pollution can be defined as:

chemistry water too little to waste pollution of water water pollution planet earth

  1. Physical change in the properties of water

  2. Chemical change in the properties of water

  3. Biological change in the properties of water

  4. All of the above

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Correct Option: D
Explanation:

There are various chemical pollutants which on mixing changes the colour, taste or other physical quality; changes the natural state of odourless, colourless form by bringing chemical changes and biological changes include an addition of pathogenic bacteria to the water by untreated sewage waste.