Environmental Engineering MCQ Questions & Answers | Chemical Engineering Page-14 section-1

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131.
The earth's atmosphere is an envelope of gases present upto a height of about __________ kms.

A. 10

B. 200

C. 1000

D. 2000

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132.
The maximum CO₂ is emitted into the atmosphere by

A. Combustion

B. Urea

C. Biomass burning

D. Trees

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133.
Pick out the correct statement.

A. Chemical oxygen demand (COD) is a measure of chemically oxidisable organic matter present in water

B. COD is determined by oxidising the organic matter present in water with potassium dichromate in cone, sulphuric acid solution at boiling temperature for specified time

C. COD is related to BOD of a given waste in water but the relationship varies for different wastes. Typically COD of potable water may be 1-2 mg/litre

D. All of the above

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134.
In water treatment plant, zeolite process is used to remove the __________ of water.

A. Acidity

B. Alkalinity

C. Hardness

D. Iron & zinc

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135.
In large thermal power stations very fine particulates present in flue gas are removed by

A. Wet scrubber

B. Bag filter

C. Electrostatic precipitators

D. Dust catcher

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136.
Higher concentration of CO₂ in atmosphere

A. Allows visible solar radiation (ultraviolet) of short wavelength to pass through

B. Reflects and absorbs the longer wavelength (infrared) radiations

C. Prevents solar heat being radiated out completely, resulting in

D. All of the above

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137.
Foul odour and bad taste of water is removed by treating with

A. Alum

B. Bleaching powder

C. Activated carbon

D. Copper sulphate

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138.
The upper layer of atmosphere is called the

A. Stratosphere

B. Troposphere

C. Ionosphere

D. None of these

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139.
Hazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.

A. 100

B. 1000

C. 400

D. 4000

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140.
World environment day is observed every year on the 5^th of

A. June

B. December

C. July

D. September

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Environmental Engineering MCQ Questions & Answers | Chemical Engineering

131. The earth's atmosphere is an envelope of gases present upto a height of about __________ kms.

Answer & Solution

132. The maximum CO2 is emitted into the atmosphere by

Answer & Solution

133. Pick out the correct statement.

Answer & Solution

134. In water treatment plant, zeolite process is used to remove the __________ of water.

Answer & Solution

135. In large thermal power stations very fine particulates present in flue gas are removed by

Answer & Solution

136. Higher concentration of CO2 in atmosphere

Answer & Solution

137. Foul odour and bad taste of water is removed by treating with

Answer & Solution

138. The upper layer of atmosphere is called the

Answer & Solution

139. Hazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.

Answer & Solution

140. World environment day is observed every year on the 5th of

Answer & Solution

Read More Section(Environmental Engineering in CE)

131.
The earth's atmosphere is an envelope of gases present upto a height of about __________ kms.

132.
The maximum CO₂ is emitted into the atmosphere by

133.
Pick out the correct statement.

134.
In water treatment plant, zeolite process is used to remove the __________ of water.

135.
In large thermal power stations very fine particulates present in flue gas are removed by

136.
Higher concentration of CO₂ in atmosphere

137.
Foul odour and bad taste of water is removed by treating with

138.
The upper layer of atmosphere is called the

139.
Hazardous/polluting chemical industries should have an 'exclusion zone' with a green belt and general public access prohibited around it, covering a radius of ____ metres.

140.
World environment day is observed every year on the 5^th of