Tag: soil pollution-control

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Questions Related to soil pollution-control

Multiple choice evs - i the environment and us soil and its conservations soil pollution-control protecting our environment

Which of the following can be considered as a example of negative pollution?

  1. Slash and but agriculture

  2. Water logging

  3. Soil salinity due to over irrigation

  4. Land filling and productivity loss
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Negative soil pollution occurs because of overuse of soil & its erosion thereby decreasing soil productivity. For example soil salinity due to over irrigation.

So the correct answer should be option C "soil salinity due to over irrigation".

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

Select the wrong statement from the following.

  1. Forests provide variety of products.

  2. Forests have greater plant diversity.

  3. Forests do not conserve soil.

  4. Forests conserve water.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Forests are an important natural resource. They provide a variety of products, are a center of biodiversity, conserve water and soil. Forests are very important for maintenance of water cycle and ecological balance. Forests provide habitat to a large variety of organisms and tribal humans are directly dependent on forests for food and habitat.

Multiple choice evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

In hilly regions, erosion can be minimised by 

  1. Terracing

  2. Ploughing effectively

  3. Manuring

  4. Strip cropping
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Terracing is the practice of creating nearly level areas in a hillside area. The terraces form a series of steps, each at a higher level than the previous. Terraces are protected from erosion of soil. 

Strip cropping or strip farming is defined as alternating crop rows between heavy-rooted plants and loosely-rooted plants to minimize erosion. An example of strip cropping is planting a field with strips of soybean and alfalfa.

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

Which is not a method of soil conservation?

  1. Strip cropping

  2. Overgrazing

  3. Crop rotation

  4. Mulching
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil conservation is a technique aimed at preserving the soil. There are various methods for soil conservation such as afforestation, manuring and crop rotation, step farming, windbreaks, strip cropping, mulching. Strip cropping is the method of farming in which the field is partitioned into long, narrow strips which are alternated in a crop rotation system. Crop rotation is the method of farming in which different types of crops are grown in the same area in different seasons. Mulching is the process of applying a layer of material on the soil in order to conserve soil moisture, improve fertility.

Thus, the correct answer is 'Overgrazing.'

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

The importance of soil for plant growth is

  1. Soil provides water

  2. Soil provides nutrients

  3. Soil provides support

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The importance of soil for plant growth is
1. Anchoring the plant.
2. Source of water and minerals.
3. Availability of oxygen for respiration of root cells.
4. Symbiotic association with microbes.

Therefore, 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

Read the given statements and select the correct option.


Statement 1: Open landfilling refers to the throwing waste on an uncovered area, which is periodically burnt or compressed.
Statement 2: In sanitary landfilling, the waste is compacted and covered by layer of dirt.

  1. Both statements 1 and 2 are correct.

  2. Statement 1 is correct but statement 2 is incorrect.

  3. Statement 1 is incorrect but statement 2 is correct.

  4. Both statements 1 and 2 are incorrect.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Open dumping or open landfilling is throwing of waste on uncovered low lying area. The waste is piled as high as the equipment can easily do. The waste is periodically burnt or compressed at intervals to reduce its bulk. In sanitary dumping or sanitary landfilling the waste is pulverised, compacted and covered over by a layer of dirt.

Multiple choice evs - i rules are for everyone soil and its conservations soil pollution-control protecting our environment sustainability of natural resources adaptations - mangrove swamps, fast flowing rivers and treetops halophiles

Soil fertility can be increased with out addition of fertilisers by 

  1. Strip cropping

  2. Crop rotation

  3. Terracing

  4. Roots
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Crop rotation is the practice of growing a series of different types of crops in the same area in sequential seasons. Crop rotation gives various nutrients to the soil. Growing the same crop in the same place for many years in a row disproportionately depletes the soil of certain nutrients. With rotation, a crop that leaches the soil of one kind of nutrient is followed during the next growing season by a dissimilar crop that returns, that nutrient to the soil or draws a different ratio of nutrients: for example, rice followed by cotton. 

Strip cropping or strip farming is defined as alternating crop rows between heavy-rooted plants and loosely-rooted plants to minimize erosion. Terracing is the practice of creating nearly level areas in a hillside area. The terraces form a series of steps, each at a higher level than the previous.

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

An agrostologic method of soil conservation is

  1. Terracing

  2. Mulching

  3. Basin listing

  4. Dry Farming
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • Soil conservation is the protection of soil from erosion and other types of deterioration, so as to maintain soil fertility and productivity.
  • Dryland Farming is the cultivation of crops without irrigation in regions of limited moisture, typically less than 20 inches (50 centimeters) of precipitation annually. It helps in soil conservation.
  • Hence an agrostologic method of soil conservation is Dry Farming.
  • So, the correct answer is 'Dairy farming'.