Tag: soil pollution-control

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Questions Related to soil pollution-control

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. Allowing herbivorous animals to graze excessively.

  2. Growing plants to form a soil cover.

  3. Increasing fertility of the soil.

  4. Making the land slopy.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When trees are cut on a large scale land becomes barren. This results in the loss of upper soil layer due to heavy wind or flowing water leading to soil erosion. Roots of plants hold the soil particles and prevent their loss. Hence afforestation i.e. growing plants to form a soil cover prevents soil erosion. Thus the correct answer is option B.

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 conservation is achieved through

  1. Restricted human activities

  2. Good plant cover

  3. Wind screen

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

Soil erosion is removal of top soil by agency of water (water erosion) and wind (wind erosion). Soil erosion is of two types- natural and anthropogenic. 

Natural or geological erosion is extremely slow removal of top soil due to rain water or wind. 
Anthropogenic soil erosion is caused by removal of plant cover through over grazing, tree felling, leaving the soil unprotected during agricultural operations. 
Thus, soil conservation can be achieved through good plant cover.

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

In hilly areas, erosion is minimised by

  1. Terracing

  2. Manuring

  3. Ploughing

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

Terracing is a process of making sloped plane into series of succesively receding flat surfaces or platforms resembling stairs, this is how erosion is minimised.

So, the correct answer is 'Terracing'

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

Which of the following area possess poorest decomposition of dead organic matter:-

  1. Tropical rain forest

  2. Temperature deciduous forest

  3. Tundra

  4. Taiga
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
One reason the rainforest soil is so poor is that a large portion of the supplements is put away in the plants themselves. In any woods, dead natural issue tumbles to the ground, giving profitable supplements to new development. In cooler or drier atmospheres, the supplements develop in the dirt. 
So, the correct option is 'Tropical rain forest'.
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. Restricted human activity

  2. Good plant cover

  3. Checking movement of animals

  4. Wind screen alone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil erosion is the phenomenon in which the top most layer of soil gets lost, since plants have the capability of holding the soil particles together and prevent them from being eroded away

So, the correct answer is 'Good plant cover'

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

Which of the following reasons contribute to negative soil pollution?

  1. Reduction of soil productivity due to the addition of agrochemicals

  2. Reduction of soil productivity due to soil erosion and overuse

  3. Reduction of soil productivity due to the addition of industrial wastes

  4. Reduction of soil productivity due to faulty sanitation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soil pollution greatly due to use of  large amount of herbicides, pesticides. There also some more reason of soil pollution like industrial wastes are dumped into fertile soil which get polluted and also not having proper satiation. But soil erosion is not responsible for soil pollution, soil erosion is mainly due to deforestation. So B option is right. 

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

Process of soil conservation involves 

  1. Addition of fertilisers

  2. Aeration of soil

  3. Ploughing

  4. Prevent soil erosion
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil conservation is the prevention of soil from erosion or reduced fertility, caused by overuse, acidification, salinization or other chemical soil contamination. Techniques for improved soil conservation include crop rotation, cover crops, conservation tillage and planted windbreaks, that affect both erosion and fertility. 

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

The management of biosphere in such a way that it may yield one greatest suitable benefit to present generation while maintaining its potential to meet the needs of future generation is 

  1. Conservation

  2. Afforestation

  3. Fossilization

  4. Over-exploitation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Afforestation is the act of planting trees in a barren land or converting a farmland to a forest in order to use the trees for commercial purposes. Many programs are organised by the government as well as non-government associations to plant trees and thus improving biodiversity.

So, the correct answer is option B.

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

Alluvial soils are mostly found in which region?

  1. Eastern Ghats

  2. Southern India

  3. Upper Gangetic plains

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

There is no alluvial basin in the world, which can compare with the Ganga Basin in terms of size, fertility, acreage and topography. It is the most densely populated river basin in the world and is often characterized as a granary or the bread basket of India. 

Alluvial soil is poor in organic matter deficient in nitrogen, rich in potassium and lime. They are formed by weathering of rocks and brought by river and wind. It is characteristic of Indogangetic plains.

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 erosion can be prevented by 

  1. Over grazing

  2. Removal of vegetation

  3. Afforestation (plantation)

  4. Increasing bird population
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Afforestation is the process of establishing a forest on land, that has not been a forest for a long time by planting trees or their seeds. Soil erosion is when the soil is blown away by the wind or washed away by the rain. Roots of trees or plants hold the soil. Thus, when more trees are planted their roots do not allow the soil to be blown or washed away and prevent soil erosion.