Tag: commercial applications

Quizzes (170) Questions (1551)

Questions Related to commercial applications

Multiple choice commercial applications management of natural resources unequal distribution of resources protecting our environment rules are for everyone

The interior of a cow-dung pile kept for a few days is quite warm. This is mostly because

  1. Cellulose present in the dung is a good insulator .

  2. Bacterial metabolism inside the dung releases heat.

  3. Undigested material releases heat due to oxidation by air.

  4. Dung is dark and absorbs a lot of heat.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

At the later stages of decomposition of cowdung, mesophilic micro-organisms decompose the dung, generating heat from exothermic( process which produces heat) processes; such heat generation is associated with the well known phenomenon of the elevated temperature of composting.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Which one of the following is a renewable source of energy?

  1. Natural gas

  2. Geothermal energy

  3. Diesel

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

Geothermal energy is the heat energy which is obtained from the interior of the Earth. However, this energy is not equally available everywhere and is concentrated in some parts of the world such as natural geysers. This is a natural and renewable source of energy that can be used for heating processes in various activities.

Thus, the correct answer is option B. 

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Which one is a non-renewable resource ?

  1. Coal and minerals

  2. Plants and coal

  3. Water and natural gas

  4. Energy and water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
  • A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. For example, Most fossil fuels, such as oil, natural gas, and coal and earth metals, minerals.
  • These resources are considered non-renewable because their formation takes billions of years.
  • Hence coal and minerals are examples for the non-renewable resource.
  • So, the correct answer is 'Coal and minerals'.
Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Metallic minerals and fossil fuels are

  1. Non-renewable resources

  2. Inexhaustible resources

  3. Renewable

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Resources are of two types, renewable and nonrenewable. Renewable resources are those resources that can be renewed and replenished. Nonrenewable resources are those resources that cannot be renewed or replenished. Examples of renewable resources include water, solar, wind. Examples of nonrenewable resources include metallic minerals and fossil fuels. 

Thus, the correct answer is 'Non-renewable resources'.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Non-conventional source of energy is

  1. Wood

  2. Biogas/Solar Energy

  3. Coal

  4. Petroleum
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  1. Non-conventional sources of Energy. Natural resources like wind, tides, solar, biomass, etc generate energy which is known as “Non-conventional resources.
  2. Solar energy is the most important non-conventional source of energy and it gives non-polluting environment-friendly output and is available in abundant.
  3. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste. Biogas is a renewable energy source. so, option biogas / solar energy.
Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

Fuel wood is

  1. Renewable source of energy

  2. Source of alcohol

  3. Source of biogas

  4. Source of petroleum gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fuel wood is considered a renewable source of energy because it can be replenished through the growth of new trees, provided the rate of consumption does not exceed the rate of regrowth.

Multiple choice commercial applications water and air and their importance natural resources and their types promotion of renewable resources protecting our environment

A non-renewable resource is

  1. Soil fertility

  2. Rainfall

  3. Biological species

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

A non-renewable source of energy is atype of resource which cannot be replenished back or take a very long time to replenish back, so biological species once lost cannot come back.

So, the correct option is 'Biological species'.