Chemical Engineering MCQs

6108 MCQs  (Page 600 of 611)

Attempt Chemical Engineering Quiz
Phenolic water generated in coke ovens & by-product plant attached to an integrated steel plant containing phenol in concentration of less than 100 mg/litre can be removed by_______________?
A. Chlorination
B. Treating in biological oxygen pond
C. Chemical coagulation
D. None of these
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Industrial workers working in leather tanning & manufacturing units are prone to suffer from ___________________?
A. Respiratory ailments (e.g. bronchitis)
B. Skin diseases (e.g. dermatitis)
C. Silicosis
D. Blurred vision
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Ionisation potential employed in the industrial electrostatic precipitator is of the order of_______________?
A. 30 to 70 kv dc
B. 30 to 70 kv ac
C. 230 v ac
D. 230 v dc
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Noise level during normal conversation among men is about ______________ decibels?
A. 10
B. 45
C. 90
D. 115
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Exposure to small amount of ______________ results in high blood pressure & heart disease in human beings?
A. Hydrogen sulphide
B. Mercury
C. Cadmium
D. Asbestos
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Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes________________?
A. Fading of dyes on textiles
B. Corrosion, tarnishing & soiling of metals
C. Reduced strength of textiles
D. All a., b. and c.
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Which of the following acts as a natural source of air pollution ?
A. Forest fire
B. Deforestation
C. Volcanic eruption
D. None of these
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Tri-sodium phosphate is used in boiler water treatment to reduce____________________?
A. Turbidity
B. Caustic embrittlement
C. Suspended silica
D. Dissolved oxygen
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Which of the following is the most major constituents of air pollutants ?
A. Oxides of sulphur
B. Oxides of nitrogen
C. Carbon monoxide
D. Hydrogen sulphide
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______________ cannot control the noise pollution ?
A. Use of silencers
B. Green house gases
C. Vibration damping
D. Tree plantation
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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