Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?

Byadmin March 11, 2019August 29, 2021

Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?

A. Packed scrubber
B. Gravity settling chamber
C. Electrostatic precipitator
D. Hydrocyclone

Chemical Environmental Engineering

The earth’s atmosphere is an envelope of gases present upto a height of about ______________ kms?

The earth’s atmosphere is an envelope of gases present upto a height of about ______________ kms?

A. 10
B. 200
C. 1000
D. 2000

Read More The earth’s atmosphere is an envelope of gases present upto a height of about ______________ kms?
Chemical Environmental Engineering

Which of the following is not a practical method of low level radioactive waste disposal ?

Which of the following is not a practical method of low level radioactive waste disposal ?

A. Dilution with inert material
B. Discharging to atmosphere through tall stacks after dilution
C. Disposing off in rivers & oceans
D. Filling in steel crates and shooting it off out of earth’s gravity

Read More Which of the following is not a practical method of low level radioactive waste disposal ?
Chemical Environmental Engineering

On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?

On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?

A. Of clotting of blood
B. Of jamming of respiratory tract
C. It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it
incapable of absorbing oxygen
D. It forms CO2 by combining with oxygen present in the blood

Read More On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?
Chemical Environmental Engineering

TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?

TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?

A. 0.1
B. 25
C. 100
D. 1000

Read More TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?
Chemical Environmental Engineering

The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the __________________?

The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the __________________?

A. Bacterial stability factor
B. Relative stability
C. Biological oxygen demand (BOD)
D. Oxygen ion concentration

Read More The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the __________________?
Chemical Environmental Engineering

Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?

Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?

A. Hydrocarbons
B. Hydrogen fluoride
C. Hydrogen sulphides
D. Nitrogen dioxide

Read More Fluorosis (a bone disease) is caused by the presence of high concentration of ____________ in atmospheric air?

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