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Questions Related to commercial applications

Annual migration does not occur in case of

commercial applications environmental equilibrium threatened species need of conservation conservation of soil and wild life sleeping time animal senses sense organs in animals

  1. Arctic tern

  2. Salamander

  3. Salmon

  4. Siberian Crane

Show answer
Correct Option: B
Explanation:

Migration is used by a number of species, including birds, fish, invertebrates, and mammals, as one strategy for dealing with a seasonally variable environment. In many cases, migration is obligated, but in some species, within a migratory population, only some individuals migrate in a given season (migrants), while the rest remain in the same location (residents), a phenomenon called as partial migration. 

Partial migration can also occur when residents and migrants share a common ground but breed in separate locations. Another form of partial migration occurs when non-migrating individuals actually forgo reproduction this is essentially a special form of low-frequency reproduction. This type of partial migration is well documented in salamanders, newts, sea turtles, and many species of fish.

Biogas is a good substitute for

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

  1. Natural gas

  2. Crude oil

  3. Coal

  4. All of the above

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Correct Option: D

Bioenergy is the energy obtained from

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

  1. Coal

  2. Natural gas

  3. Biomass

  4. Petroleum

Show answer
Correct Option: C
Explanation:
Biomass is the amount of organic matter present in an organism. It is the stored form of energy in an organism. Biomass is used to produce bioenergy. Biomass can be of various types such as woods, crops, landfill gas etc. Biomass can be converted to various forms to produce biofuels, biogas etc. Highest amount of biomass is present in plants as they trap solar energy and convert it into mechanical energy in the form of stored food. 
So, the correct answer is 'Biomass'.

Biogas contains

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

  1. $CH _4+CO+CO _2$

  2. $CH _4+CO _2+H _2$

  3. $CO+CO _2+H _2$

  4. $CO+CO _2+NO _2$

Show answer
Correct Option: B
Explanation:
Biogas is a form of energy produced from anaerobic decomposition of waste material and organic matter. It is a renewable source of energy and a good alternative in place of fossil fuels which are depleting with time. Biogas is produced by methanogenic bacteria which breakdown organic matter in the absence of oxygen. They produce biogas which is a mixture of gases like methane (CH4), carbon dioxide (CO2) and hydrogen (H2) in different composition.
So, the correct answer is 'CH4 + CO2 + H2 '.

Bioenergy is obtained from

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

  1. Petroleum

  2. Natural gas

  3. Biomass

  4. Synthetic fuel

Show answer
Correct Option: C
Explanation:
Biomass is the amount of organic matter present in an organism. It is the stored form of energy in an organism. Biomass is used to produce bioenergy. Biomass can be of various types such as woods, crops, landfill gas etc. Biomass can be converted to various forms to produce biofuels, biogas etc. Bioenergy is renewable source energy because it can be replenished over a period of time.
So, the correct answer is 'Biomass'.

Hot water of Manikaran is used for generating electricity. It is known as 

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

  1. Solar energy

  2. Biomass energy

  3. Geothermal energy

  4. Hydroelectric energy

Show answer
Correct Option: C
Explanation:
A. Solar energy is energy generated from heat of sun.
B. Biomass energy is generated from the biomass i.e. organic matter of plants and animals which in turn, contains the stored solar energy.
C. Geothermal energy is the energy generated from heat of earth. 
D. Hydroelectric energy is generated using water which is passed over turbines which flow at a high speed and electricity is generated.
Manikaran (located in Himachal Pradesh) hot springs are used to generate geothermal energy because the heat of the water is used to produce electricity.
So, the correct answer is 'Geothermal energy'.

The scientist could who first demonstrated that nuclear energy be harnessed to produce electrical energy was :

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

  1. Homi Bhabha

  2. Enrico Fermi

  3. W B Lewis

  4. P A M Dirac

Show answer
Correct Option: B
Explanation:

Enrico Fermi (1901-1954) was an Italian physicist and recipient of the 1938 Nobel Prize in Physics. He created the world's first nuclear reactor, the Chicago Pile- 1.

So, the correct answer id 'Enrico Fermi'.

Planetesimal hypothesis is given by?

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

  1. Hoyle in $1939$

  2. Lyttleton in $1939$

  3. Kent in $1946$

  4. More than one correct answer

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Correct Option: A

__________ is the element used to produce nuclear energy

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

  1. Palladium

  2. Strontium

  3. Uranium

  4. Rhodium

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Correct Option: C

In which form energy flow occur in ecosystem?

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

  1. Solar energy

  2. Heat energy

  3. Chemical energy

  4. Electric energy

Show answer
Correct Option: A