Chemical Engineering MCQs

6108 MCQs  (Page 608 of 611)

Attempt Chemical Engineering Quiz
Ozone is__________________?
A. A primary pollutant
B. A secondary pollutant
C. Impervious to ultra-violet rays
D. Both b. and c.
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Infective bacteria in water is killed by the _____________ process?
A. Sterilisation
B. Aeration
C. Disinfection
D. None of these
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Hydrogen ion concentration in distilled water is___________________?
A. 10-7
B. 7 × 10-7
C. 107
D. 7 × 107
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The progressive warming up of the earth’s surface is mainly due to the___________________?
A. Automobile exhaust
B. Blanketing effect of co2 in the atmosphere
C. De-forestation
D. Thickening of ozone layer
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TLV of NO2 & NO exposure for the human being is 5 & 25 ppm respectively. Prolonged exposure of human being to NO2 causes_________________?
A. Skin disorder
B. Bronchitis
C. Bone disease
D. Cancer
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The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?
A. Ionosphere
B. Troposphere
C. Stratosphere
D. None of these
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Which of the following processes is involved in the biochemical treatment of sewage effluents ?
A. Oxidation
B. Reduction
C. Dehydration
D. Fermentation
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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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Color test of water is done with an instrument called__________________?
A. Tintometer
B. Colorimeter
C. Electro-chemical cell
D. Turbidimeter
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The maximum CO2 is emitted into the atmosphere by_________________?
A. Combustion
B. Urea
C. Biomass burning
D. Trees
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Word of the Day
22 Jul
Combative
ready or eager to fight or argue.
لڑاکا، متنازع، جھگڑالو

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