Chemical Environmental Engineering

Foaming and priming in boiler operation can be reduced by reduction in ______________ in feed water?

Byadmin March 11, 2019August 29, 2021

Foaming and priming in boiler operation can be reduced by reduction in ______________ in feed water?

A. Turbidity
B. Color (Hazen)
C. Total solids
D. All A., B. & C.

Chemical Environmental Engineering

The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?

The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?

A. Catalytic conversion
B. Green house effect
C. Global warming
D. Both B. and C.

Read More The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?
Chemical Environmental Engineering

The biological decomposition of organic substances in wastes controlled conditions is called_________________?

The biological decomposition of organic substances in wastes controlled conditions is called_________________?

A. Incineration
B. Biological oxidation
C. Composting
D. None of these

Read More The biological decomposition of organic substances in wastes controlled conditions is called_________________?
Chemical Environmental Engineering

______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?

______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?

A. Calcium
B. Fluorine
C. Phosphorous
D. Sulphur

Read More ______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?
Chemical Environmental Engineering

Corrosion in boilers can be prevented by _________________?

Corrosion in boilers can be prevented by _________________?

A. Deaeration of feed water
B. Enhancing pH of feed water by adding alkali
C. Feeding sodium sulphite or hydrazine phosphate to the boilers, which combines with oxygen
and prevents corrosion
D. All A., B. and C.

Read More Corrosion in boilers can be prevented by _________________?
Chemical Environmental Engineering

Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the_______________?

Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the_______________?

A. Forestation
B. Rain
C. Green house effect
D. Vegetation

Read More Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the_______________?
Chemical Environmental Engineering

Out of the following, TLV of _______________ is maximum (about 500 ppm)?

Out of the following, TLV of _______________ is maximum (about 500 ppm)?

A. Carbon dioxide
B. Toluene
C. Carbon disulphide
D. Acetaldehyde

Read More Out of the following, TLV of _______________ is maximum (about 500 ppm)?

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