Tag: economics

Quizzes (361) Questions (3598)

Questions Related to economics

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water, is called ________

  1. BOD

  2. ABE

  3. COD

  4. Standard amount of oxygen
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water is called Biochemical Oxygen Demand(BOD)
                             
The amount of BOD in the water is a measure of the amount of organic material in the water, in terms of how much oxygen will be required to break it down biologically.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Which of the following is a pollutant?

  1. Sooty particle

  2. Sulpur-dioxide

  3. Carbon-monoxide

  4. All of above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pollutant is a substance that pollutes something, especially water or the atmosphere.
Examples are particulate matter (Sooty particles that are most toxic when they are small),sulphur dioxide,carbon-monoxide etc.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Those gases or particles that are pumped into the air to make it unclean are called ______.

  1. primary air pollutant

  2. secondary air pollutant

  3. teritiary air pollutant

  4. none of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Primary pollutants are those gases or particles that are pumped into the air to make it unclean. They include carbon monoxide from automobile (cars) exhausts and sulphur dioxide from the combustion of coal.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Lead is considered as a major  _________ pollutant.

  1. water

  2. air

  3. soil

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lead is a major air pollutant.Smelters (metal refineries) and other metal industries; combustion of leaded gasoline in piston engine aircraft; waste incinerators (waste burners), and battery manufacturing.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Which of the following are causes of industrial pollution?

  1. Asbestos

  2. Oils

  3. Nitrates & Phosphates

  4. All of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the options are causes of industrial pollution
Asbestos:
This pollutant has cancer-causing properties. When inhaled, it can cause illnesses such as asbestosis and some types of cancer.
Nitrates & Phosphates:
These are found in fertilizers, and are often washed from the soils to nearby water bodies. They can cause eutrophication, which can be very problematic to marine environments.
Oils:
Oils form a thick layer on the water surface because they do not dissolve in water. This can stop marine plants receiving enough light for photosynthesis.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

__________  is the deterioration (destruction) of the earths land surfaces, often directly or indirectly as a result of mans activities and their misuse of land resources.

  1. Land pollution

  2. Soil erosion

  3. Deforestation

  4. Enrichment of soil
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Land pollution is the deterioration (destruction) of the earths land surfaces, often directly or indirectly as a result of mans activities and their misuse of land resources.
It occurs when waste is not disposed of properly, or can occur when humans throw chemicals onto the soil in the form of pesticides, insecticides and fertilizers during agricultural practices.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

This process in which nutrient enriched water bodies support a dense plant population, which kills animal life by depriving it of oxygen and results in subsequent loss of biodiversity is known as ________.

  1. green-house effect

  2. eutrophication

  3. land pollution

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Rain can carry and deposit the nitrogen in some pollutants on rivers and soils. This will adversely affect the nutrients in the soil and water bodies. This can result in algae growth in lakes and water bodies, and make conditions for other living organism harmful.this is called eutrophication.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Acid rain is caused by _______.

  1. emission of gases from industries

  2. air pollutants

  3. both (A) and (B)

  4. none of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chemical reactions involving air pollutants can create acidic compounds which can cause harm to vegetation and buildings. Sometimes, when an air pollutant, such as sulfuric acid combines with the water droplets that make up clouds, the water droplets become acidic, forming acid rain.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

When pollutants in the air mix up in a chemical reaction, they form an even more dangerous chemical.these pollutants are called ______.

  1. primary air pollutant

  2. secondary air pollutant

  3. tertiary air pollutant

  4. none of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Secondary pollutants: When pollutants in the air mix up in a chemical reaction, they form an even more dangerous chemical. Photochemical smog is an example of this, and is a secondary pollutant.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Pollution is:

  1. removal of top soil

  2. release of toxic/undesirable materials in environment

  3. conservation of energy

  4. all of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The correct answer is the release of toxic materials in the environment.
The reasons are:-
  • Toxic waste is any unwanted material in all forms that can cause harm (e.g. by being inhaled, swallowed, or absorbed through the skin).
They pollute the air and contaminate soil and water. Disposing of such waste is a major public health issue.
They are the major contributors for the Environmental pollution when it is not disposed of and water pollution, when they are dumped in the water.