Tag: commercial applications

Questions Related to commercial applications

Water is

  1. Exhaustible resource

  2. Inexhaustible resource

  3. National resource

  4. Organic resource


Correct Option: B
Explanation:

Inexhaustible resources are resources that are present with unlimited amounts in the nature; they cannot be depleted or exhausted by human activity. Inexhaustible resource is known as a renewable resource. This includes water, sand clay, water as well as solar energy.

Therefore, the correct answer is option B.

Which of the following is a non-renewable resource?

  1. Water

  2. Coal

  3. Forests

  4. Wild life


Correct Option: B
Explanation:

A non-renewable resource (also called a finite resource) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames. Earth minerals and metal ores, fossil fuels (coal, petroleum, natural gas) and groundwater in certain aquifers are all non-renewable resources.

Therefore, the correct answer is option B. 

The inexhaustible resources are

  1. Air and light

  2. Sand

  3. Both A and B

  4. None of the above


Correct Option: C
Explanation:

The resources which are available in nature in an unlimited amount, known as inexhaustible resources. These resources can be replenished again and again for use. The light energy is inexhaustible resources which are obtained from the sun. The wind and light energy can be used for the generation of electricity. The sand is available in large amounts and is used for the production of glass. 

Thus, the correct answer is option C. 

A depleting source of energy is

  1. Wind

  2. Sunlight

  3. Water

  4. Fossil fuels


Correct Option: D
Explanation:

A non-renewable resource (also called as a finite resource or depleting source) is a resource that does not renew itself at a sufficient rate for sustainable economic extraction in meaningful human time-frames. An example is carbon-based, organically-derived fuel. Earth minerals and metal ores, fossil fuels (coal, petroleum, natural gas) are all non-renewable resources. In contrast, resources such as sunlight, water, timber and wind are considered renewable resources, largely because their localized replenishment can occur within time frames useful to humans.

The renewable source is

  1. Trees

  2. Agricultural products

  3. Wild life species

  4. Both A and B


Correct Option: D
Explanation:

The resources which can be replenished again after their consumption are referred as the renewable sources of energy. The trees can be replenished by afforestation method in which new trees can be planted. The agricultural products can be obtained again when the new crops are produced in the farm. The wildlife species once extinct cannot be replenished again. 

Thus, the correct answer is option D. 

When was the department of nonconventional energy sources established ?

  1. 1975

  2. 1980

  3. 1988

  4. 1982


Correct Option: D
Explanation:

The Department of Non-Conventional Energy Sources (DNES) was a new department which was set up in the ministry of energy. The establishment of this department took place in the year of 1982. Later on, the department was transformed into the ministry of non-conventional energy resource. 

Thus, the correct answer is option D. 

Which of the following is a renewable resource ?

  1. Water

  2. Soil

  3. Forests

  4. All of the above


Correct Option: D
Explanation:

The resources which can be replenished again after their consumption are referred as the renewable sources of energy. Water resource can be replenished due to rainfall. Soil production occurs due to the breaking of the rocks. The forests can be replenished through afforestation.

Thus, the correct answer is option D. 

Which of the following resources is going to be exhausted by the end of this century?

  1. Lead

  2. Gold

  3. Tin

  4. All of the above


Correct Option: D
Explanation:

The minerals are obtained from the ores through mining. There are limited resources of the minerals present in the Earth's crust. Lead is used in the making of the batteries of the electronic devices. Gold is known for its commercial value in the making of the jewellery. Tin is used for various purposes from the ancient age. Tin was used for the making of coin, utensils, alloy making, etc. Tin is now commonly used for the preparation of the jars. The exploitation of these metals has resulted in fewer resources left and so, the metal resources will be exhausted first.

Thus, the correct answer is option D. 

Minerals, metals and fossil fuels are

  1. Renewable resources

  2. Non-renewable resources

  3. Biodegradable resources

  4. Renewable as well as nonrenewable resources


Correct Option: B
Explanation:

The resources which cannot be replenished again after consumption of resources are known as non-renewable resources. Minerals are obtained from the ores and they are available in limited forms. The metals are obtained through mining and are present in reserved amounts in the Earth's crust. The fossil fuels are synthesized due to the decomposition of the dead matter for long period of time. These resources cannot be replenished once they are used up. 

Thus, the correct answer is option B. 

The inexhaustive, nonconventional source of energy is/are

  1. Solar radiations

  2. Wind power

  3. Sea tides

  4. All of these


Correct Option: D
Explanation:

The resources which are available in nature in an unlimited amount are known as inexhaustible resources. These resources can be replenished again and again for use. The resources which can be renewed and are safe to use are known as non-conventional sources of energy. Solar radiations, wind power and sea tides are used for the generation of the electricity. These are inexhaustive and non-conventional resources. 

Thus, the correct answer is option D.