Chemical Engineering Subcategories

Chemical Engineering	Chemical Reaction
Polymer Technology	Fuels and Combustion
Refractory Technology	Fluid Mechanics for Chemical
Thermodynamics for Chemical	Materials and Construction
Fertilizer Technology	Chemical Environmental Engineering

There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?

A. Mercury
B. Arsenic
C. Aluminium
D. Lead

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

In water treatment plant, zeolite process is used to remove the _____________ of water?

A. Acidity
B. Alkalinity
C. Hardness
D. Iron & zinc

Disinfection of water is done to remove ______________________?

A. Color
B. Bad taste
C. Foul odour
D. Bacteria

Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about _______________ decibels?

A. 105
B. 135
C. 160
D. 185

The average thickness of ozone layer in stratosphere is about _______________ dobson unit (DU)?

A. 20
B. 230
C. 750
D. 1500

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

The upper layer of atmosphere is called the ____________________?

A. Stratosphere
B. Troposphere
C. Ionosphere
D. None of these

The term Biological Oxygen Demand (BOD) is used in relation to ______________________?

A. Potable water
B. Cooling water
C. Distilled water
D. Industrial effluents

Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?

A. CO
B. SO2
C. NOx
D. CFC (chloro fluoro carbons)