Chemical Environmental Engineering

Green house effect is accentuated by________________?

Byadmin March 11, 2019August 29, 2021

Green house effect is accentuated by________________?

A. Deforestation
B. Rapid industrialisation
C. Increased transportation activity
D. All A., B. and C.

Chemical Environmental Engineering

The main industrial source of emission of hydrogen sulphide air pollutant is________________?

The main industrial source of emission of hydrogen sulphide air pollutant is________________?

A. Petroleum refineries
B. Coal based thermal power plants
C. Pulp and paper plant
D. Metallurgical roasting & smelting plant

Read More The main industrial source of emission of hydrogen sulphide air pollutant is________________?
Chemical Environmental Engineering

Insufficient washing of sand grains in a rapid sand filter causes__________________?

Insufficient washing of sand grains in a rapid sand filter causes__________________?

A. Air binding
B. Shrinkage of filtering media
C. Mud balls
D. Expansion of filtering media

Read More Insufficient washing of sand grains in a rapid sand filter causes__________________?
Chemical Environmental Engineering

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?

A. 102
B. 105
C. 109
D. 1015

Read More CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing ________________ molecules of ozone?
Chemical Environmental Engineering

Presence of soluble organics in polluted water causes_________________?

Presence of soluble organics in polluted water causes_________________?

A. Undesirable plants growth
B. Depletion of oxygen
C. Fire hazards
D. Explosion hazards

Read More Presence of soluble organics in polluted water causes_________________?
Chemical Environmental Engineering

TLV of mercury in potable (drinking) water is about ______________ ppm?

TLV of mercury in potable (drinking) water is about ______________ ppm?

A. 0.001
B. 0.1
C. 1
D. 5

Read More TLV of mercury in potable (drinking) water is about ______________ ppm?
Chemical Environmental Engineering

The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?

The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?

A. 1
B. 5
C. 10
D. 50

Read More The weakest sound that can be heard by a person in a quiet environment is equivalent to ____________ decibel ?

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