Tag: commercial studies

Quizzes (186) Questions (1136)

Questions Related to commercial studies

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

All the following are proper plans for increasing agricultural production except

  1. Expansion of irrigation facilitles

  2. Increase in application of fertilizers

  3. Mechanisation of various aspects offarming

  4. Cutting of forests to add land for cultivation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cutting of forests also called as deforestation that can provide additional area for cultivation. However, this is an incorrect plan because it leads to decrease in the number of trees. This will in turn lower rainfall and hence decrease the agricultural production. Thus the correct answer is option D.

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

The check-dams stop the rainwater from ______

  1. Flowing away

  2. Reduce soil erosion

  3. Above both options

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Check-dams are built to slow down the flow of water, which helps in both water conservation (preventing it from flowing away) and reducing soil erosion by decreasing the velocity of runoff.

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

Which of the following is not a method of preventing soil erosion?

  1. Terrace farming

  2. Contour ploughing

  3. Strip cropping

  4. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The prevention of soil erosion is called as soil conservation and the ways can be as follows:
Terrace farming is one way to do so and involves cutting terraces along a slope. These terraces reduce the speed of water flowing down the slope and help in soil conservation.
Contour ploughing is also beneficial in reducing the flow of water down the slope and involves ploughing at right angles to the natural slope of land.
Effective farming techniques further help in soil erosion. In plain areas, strip cropping can be used for soil conservation where strips of grass are allowed to stand between crops in large fields. These strips of grass reduce the force of wind and thus prevent soil erosion.

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

Planting rows of trees along farm lands

  1. Causes soil erosion

  2. Break the force of wind

  3. Both A and B

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

Planting rows of trees along farmland also help break the force of wind and help in soil conservation. Shelter belts of trees, when planted along sand dunes, help stabilise them and prevent the desert from extending into land available for cultivation.

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

Soil erosion can be prevented by

  1. Over-gazing

  2. Removal of vegetation

  3. Afforestation

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

Afforestation, or planting trees, helps bind the soil with roots and reduces the impact of rain and wind, thereby preventing soil erosion. The other options (over-grazing, deforestation) actually increase erosion.

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

Soil pollution can be controlled by

  1. Recovery and recycling

  2. Dumping

  3. Sludge burning

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

Soil pollution can be effectively managed and reduced by recovery and recycling of waste materials. Dumping only adds to soil pollution, and sludge burning can cause air pollution.

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

Strip cropping is a method of

  1. Water conservation

  2. Soil conservation

  3. Air pollution

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

Effective farming techniques further help in soil erosion. In plain areas, strip cropping can be used for soil conservation where strips of grass are allowed to stand between crops in large fields. These strips of grass reduce the force of wind and thus, prevent soil erosion.

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

Terrace farming is a method of

  1. Water conservation

  2. Soil conservation

  3. Air pollution

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

Terrace farming is one way of soil conservation and involves cutting terraces along a slope. These terraces reduce the speed of water flowing down the slope and help in soil conservation.

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

Which of the following prevents soil erosion?

  1. Afforestation

  2. Eutrophication

  3. Deforestation

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

Deforestation is the destruction of forest resources. The major effect of deforestation is the loss of precious wildlife, rare species of flora and fauna. Directly or indirectly, deforestation causes soil erosion and drought. Soil erosion can be prevented by afforestation and reforestation. Afforestation is the planting of the new forests. Plants hold soil with their roots and thus prevent erosion. Eutrophication is the process of enriching water bodies with nutrients.  It supports the abnormal growth of algae.

Thus, the correct answer is option A.