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Chemical Engineering - Environmental Engineering

Exercise : Environmental Engineering - Section 6
36.
Sooty and sulphurous smog formed due to combustion of fossil fuels particularly in winter, continues throughout the day and night. When the moist atmospheric air's water vapor condenses on the solid particles of smoke thereby forming smog (smoke + fog), it causes
poor visibility due to sky darkening.
irritation in eyes.
respiratory trouble.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Deaeration of high pressure boiler feed water is done to reduce
foaming from boilers.
its dissolved oxygen content.
its silica content.
caustic embrittlement.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Exposure to SO2 containing chimney gases results in the
reduction in strength of leather & cloth.
acceleration of corrosion rates of metals.
increased drying & hardening time of paints.
all (a), (b)and(c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of __________ of water.
dissolved oxygen content
biological oxygen demand
vapor pressure
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Hydrogen ion concentration in distilled water is
10-7
7 x 10-7
107
7 x 107
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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