General Knowledge MCQs

Environmental Science Questions with solutions MCQs

1. According to Boyle`s law, if the volume occupied by a certain gas is doubled

A

The pressure of the gas will be doubled

B

The pressue of the gas will be quadrupled

C

The pressure of the gas will remain constant

D

The pressure of the gas will be halved

Environmental Science General Awareness
Correct Answer : D
Explanation :

The law itself can be stated as follows: For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. ... Therefore, when the volume is halved, the pressure is doubled; and if the volume is doubled, the pressure is halved.

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2. A natural system consisting of all plants, animals, and microorganisms in an area functioning together with all the non-living physical factors of the environment is called

A

Populations

B

Community

C

Ecosystem

D

Biosphere

Environmental Science General Awareness
Correct Answer : C
Explanation :

An ecosystem is a natural unit consisting of all the living organisms in an area functioning together with all the nonliving, physical factors of the environment.

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3. which one of the following fuels produce less carbon dioxide when burnt

A

Natural Gas

B

Petrol

C

Diesel

D

Coal

Environmental Science General Awareness
Correct Answer : A
Explanation :

Heat is produced when C and H combine with oxygen (O) during combustion. Natural gas is primarily methane (CH4), which has a higher energy content relative to other fuels, and thus, it has a relatively lower CO2-to-energy content

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