Tag: commercial applications

Questions Related to commercial applications

Snow blindness is cause due to

commercial applications global environmental change causes of resource depletion causes of greenhouse effect ozone layer depletion

  1. Ozone hole

  2. Nuclear winter

  3. Acid rain

  4. Green house effect

Show answer
Correct Option: A
Explanation:

Cataracts and blindness are among the most common eye diseases associated with further ozone layer depletion and increased UV-B at the Earth's surface.  A 1% decrease in stratospheric ozone may result in 100,000 to 150,000 additional cases of blindness due to eye cataracts worldwide. The ozone layer is responsible for absorbing harmful ultraviolet rays, and preventing them from entering the Earth's atmosphere.

So the correct answer is 'Ozone hole'.

Which of the following statement/s is/are correct with regard to ozone depletion:
1. The ozone hole is measured in terms of ozone concentrations, which is expressed in Dobson units.
2. The major cause for ozone depletion is the presence of CFCs in the stratosphere - CFCs are entirely man-made and not found naturally.

commercial applications global environmental change causes of resource depletion causes of greenhouse effect ozone layer depletion

  1. Only 1

  2. Only 2

  3. Both A and B

  4. None of the above

Show answer
Correct Option: C
Explanation:

  • CFCs and other halogenated ozone depleting substances (ODS) are mainly responsible for manmade chemical ozone depletion.
  • The total amount of effective halogen (Chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine.
So, the correct option is 'Both A and B'.

Ozonosphere occurs at height of

commercial applications global environmental change causes of resource depletion causes of greenhouse effect ozone layer depletion

  1. 8-10 km. above poles

  2. 8-10 km. above equator

  3. 11-16 km above poles

  4. 11=-16 km above equator

Show answer
Correct Option: C

Which one of the following is NOT a producer of mica?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Jharkhand

  2. Rajasthan

  3. Karnataka

  4. Andhra Pradesh

Show answer
Correct Option: C
Explanation:
  • About 95% of India’s mica is distributed in just three states of Jharkhand, Andhra Pradesh and Rajasthan.
  • Of the above options, Karnataka is not a producer of mica.

Which one of the following is not a characteristic of minerals?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. They are created by natural processes

  2. They have a definite chemical composition

  3. They are inexhaustible

  4. Their distribution is uneven

Show answer
Correct Option: C
Explanation:
  • An inexhaustible resource is one that is replaceable, while an exhaustible resource is not replaceable.
  • Minerals are natural resources and they cannot be replaced by man.
  • Therefore, the constant use of minerals at this rate will lead to their exhaustion. Thus, they are considered as exhaustible natural resources.

Natural resources are mostly accumulated in _________.

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Remote areas

  2. Coastal areas

  3. Arid regions

  4. Plains

Show answer
Correct Option: A
Explanation:

Most of the natural resources are accumulated in the remote areas of a nation. With the development of these resources, the region also get gradually developed.

Which one of the following practices will NOT conserve LPG in your kitchen?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Soaking the dal for some time before cooking it.

  2. Cooking food in a pressure cooker.

  3. Keeping the vegetables chopped before lighting the gas for cooking.

  4. Cooking food in an open pan kept on low flame.

Show answer
Correct Option: D
Explanation:

Cooking food in an open pan kept on low flame will not conserve LPG in your kitchen.

Minerals are deposited and accumulated in the stratas of which of the following rocks?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Sedimentary rocks

  2. Igneous rocks

  3. Metamorphic rocks

  4. None of the above

Show answer
Correct Option: A
Explanation:

Minerals are deposited and accumulated in the stratas of sedimentry rocks.

Sedimentary rocks can contain fossils because, unlike most igneous and metamorphic rocks, they form at temperatures and pressures that do not destroy fossil remains.

Which one of the following minerals is contained in the Monazite sand?

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Oil

  2. Uranium

  3. Thorium

  4. Coal

Show answer
Correct Option: C
Explanation:

Monazite is a reddish brown-phosphate mineral containing rare-earth metals.

Thorium is contained in the Monazite sand. This mineral is mined from the placer deposits.

Bio-gas is an example for _________________.

commercial applications treasure under the ground conservation of mineral resources distribution and conservation of mineral resources indian mineral and power resources

  1. Hydro-electric energy

  2. Non-conventional energy

  3. Thermal energy

  4. Nuclear energy

Show answer
Correct Option: B
Explanation:

Energy which is generated by using wind, tides, solar, geothermal heat, and biomass including farm and animal waste as well as human excreta is known as non-conventional energy. All these sources are renewable or inexhaustible and do not cause environmental pollution. Bio-gas is an example for non-conventional energy. It is based upon the use of dung to produce gas which is used as domestic fuel especially in the rural areas. This technique is based on the decomposition of organic matter in the absence of air to yield gas consisting of methane (55%) and carbon dioxide (45%) which can be used as a source of energy.