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Questions Related to rules are for everyone

Fertility of soil is measured by its ability to

  1. Retain nutrients

  2. Hold organic materials

  3. Hold water

  4. Support life


Correct Option: D
Explanation:

The fertility of soil can be considered in different ways, depending on land use. In intensively managed agricultural and horticultural systems, and even in forestry, soil fertility can be defined in terms of the value of products produced. In nature soil gains nutrients from rocks, which are natural reservoirs of nutrients. These nutrients are released through geological processes, like leaching and pedogenesis. Soil also gains nutrients through the agencies of water and dead and decaying excreta of organisms. The physical characteristics of soil also govern nutrient availability of soil. The nutrient availability is a measure of soil fertility.

The soil near the surface is usually darker than about one meter down, this is because the top soil

  1. Is richer in Ca and Mg

  2. Contains more organic matter

  3. Is wetter than the sub soil

  4. Is drier than the sub soil


Correct Option: B
Explanation:

The uppermost layer of soil is usually darker in colour due to the presence of huge amount of organic matter. Organic matter is composed of roots, dead leaves, insects, small organisms and animals which eventually get degraded to form humus and make the soil fertile. Humus is black in colour due to large quantity of carbon.

World Environment day was first established by UN Assembly on 

  1. 16th September 1966

  2. 10th July 1996

  3. 5th June 1972

  4. 7th December 1977


Correct Option: C
Explanation:

'World Environment Day' is celebrated every year on 5 June to raise global awareness to take positive environmental action to protect nature and the planet Earth. It is run by the 'United Nations Environment Programme' (UNEP). It was established by the 'United Nations General Assembly' in 1972 on the day, that 'United Nations Conference on the Human Environment' began. The first 'World Environment Day' was celebrated in 1973. Since then it is hosted every year by a different city with a different theme.

Which one of the expanded forms of the following acronyms is correct?

  1. IUCN - International Union for Conservation of Nature and Natural Resources

  2. IPCC - International Panel for Climate Change

  3. UNEP - United Nations Environmental Policy

  4. EPA - Environmental Pollution Agency


Correct Option: A
Explanation:

IUCN is the 'International Union for Conservation of Nature and Natural Resources', which is now called 'World Conservation Union' or WCU. It has its headquarters at Morges, Switzerland.

Identify the correct combinations.

National Park Place Animal Protected
(A) Jim corbett Rajasthan Tigers
(B) Gir Gujarat Lions
(C) Kaziranga Assam One-horned rhinoceros
(D) Periyar Uttaranchal Tigers and elephants


  1. (B) and (C)

  2. (C) and (D)

  3. (A) and (D)

  4. (A) and (B)


Correct Option: A
Explanation:

Jim Corbett national park is located in Uttarakhand and protect the endangered Bengal tiger.

Gir national park is a forest located in Gujarat and protect lions.
Kaziranga national park is located in Assam and protects one horned rhinoceros.
Periyar national park is elephant and tiger reserve but it is located in Kerala.
Thus, the correct answer is option A.

Which is not a characteristic of natural resources among the following?

  1. They exists without action of human kind

  2. They can be made by humans

  3. They can be modified and used

  4. Demand is very high


Correct Option: B
Explanation:

Natural Resources exists naturally. It exists with or without human being intervention. It can't be created by humans but can be modified and utilized accordingly for humans comfort. Also, some of the natural resources are limited in nature hence it's demand is very high.

Primary fuel among the following is:

  1. petrol

  2. diesel

  3. methanol

  4. natural gas


Correct Option: D
Explanation:

Primary fuel is the one which we get directly from nature.

Eco friendly method is

  1. Plantation of C- 3 plants

  2. Plantation of sugarcane

  3. Energy plantation

  4. None of the above


Correct Option: C
Explanation:

Energy plantation is growing of firewood trees on the non forest and agricultural lands. Plants selected for energy plantation must be local, fast growing, hardy, requiring minimum nutrients, preferably with associated nitrogen fixing organisms, good cropping, good fuel value and having additional benefits like food, fruit, gum etc. It is an eco - friendly energy resource.

Where  are the wind energy farms located in Gujarat ?

  1. Lamba near Porbandar

  2. at Okha

  3. at Mandvi and Dhank

  4. all of them


Correct Option: D
Explanation:
  1. Wind energy farms are located at Lamba near Porbandar, at Okha, Mandvi and at Dhank in Gujarat.

Biotic natural resource among the following is _____________.

  1. air

  2. sunlight

  3. plants

  4. minerals


Correct Option: C
Explanation:

Biotic natural resources are the type of resources obtained from organic matter like soil, coal, plants etc. which contain material like carbon. All other sources like air, sunlight and minerals are the non-biotic resources.