Tag: striving for a better environment

Questions Related to striving for a better environment

Malathion is used as 

commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

  1. fungicide

  2. pesticide

  3. weedicide

  4. biocide.

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Correct Option: B
Explanation:

Malathion is an organophosphate. It is an insecticide (pesticide) with relatively low human toxicity. It is being widely used in agricultural application. 

The pH of water sample collected from a river was found to be acidic in the range of 3.5 to 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?

commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

  1. Soap and detergent factory

  2. Lead battery manufacturing factory

  3. Plastic cup manufacturing factory

  4. Alcohol distillery

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Correct Option: B
Explanation:

Lead battery manufacturing factory have acid electrolyte, so it will cause for lowering tin pH of river water.

In this soil conservation method, several grasses are left out in soil after the crop is harvested

commercial studies striving for a better environment soil and its conservations soil pollution-control protecting our environment

  1. Tillage

  2. Crop rotation

  3. Terrace farming

  4. Contour farming

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Correct Option: D
Explanation:

Tillage is the method of mechanical agitation of various types like as digging, stirring, and overturning to improve the crop yield. Crop rotation helps in increase in soil fertility. It is the process of growing a series of different crops in the same area in sequenced seasons. Terrace farming is a type of farming that consists of various steps or terraces. In contour farming, several grasses are left out in soil after the crop is harvested. In contour farming, crops are placed perpendicular to slopes to follow the contours of a slope of a field. This helps in breaking down the flow of water and prevent soil erosion.

Thus, the correct answer is 'Contour farming.'

From the list given below, pick the item that is not a natural resource.

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. Soil

  2. Water

  3. Electricity

  4. Air

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Correct Option: C
Explanation:

Electricity can be created/generated and is man-made. Air, water and soil are all natural resources and cannot be created by humans.

Which of the following is the most appropriate definition of a natural resource?

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. It is present only on land.

  2. It is a gift of nature, which is very useful to mankind.

  3. It is a man-made substance placed in nature.

  4. It is available only in the forest.

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Correct Option: B
Explanation:

Natural resources occur naturally in our environment. They cannot be created by man.

Which of the following is not a natural resource?

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. Mango tree

  2. Snake

  3. Wind

  4. Wooden house

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Correct Option: D
Explanation:

Natural resources are the resources made available by the nature to us. The important natural resources are the trees, animals and climatic factors like wind. All of these can be used variously to generate goods and services for our benefit. For example- trees provide us fruits, fresh air, timber etc. All animals and plants are important for the ecological balance on the Earth. Further some animals are of direct economic benefit for mankind. Climatic factors like sunlight and wind power can be harnessed to generate energy.

Waste utilization is helpful in conservation of

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. Deforestation

  2. Eutrophication

  3. Urbanization

  4. Natural Resources

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Correct Option: D

Sources, in which locations cannot be indentified is known as

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. Stationary Sources

  2. Diffused Sources

  3. Point Sources

  4. Line Sources

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Correct Option: B

From the list given below pick the item that is not a natural resource.

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. Soil

  2. Water

  3. Electricity

  4. Sunlight

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Correct Option: C
Explanation:

A natural resource is anything that people can use which comes from nature. People do not make natural resources, but gather them from the Earth. Examples of natural resources are air, water, wood, oil, wind energy, iron and coal. Refined oil and hydro-electric energy are not natural resources because people make them.

Most important natural source of energy currently being used is

commercial studies striving for a better environment unequal distribution of resources protecting our environment rules are for everyone

  1. Sunlight

  2. Fossil fuel

  3. Biogas

  4. Atomic energy

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Correct Option: A
Explanation:

The resources which are naturally produced in nature are known as natural resources. The important resource which is used currently is the sunlight. The solar energy can be harnessed for the generation of electricity. The solar panels which help in capturing the energy and conversion to electrical energy.

Thus, the correct answer is option A.