Chemical Engineering — Test 202
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Question 1
Acute danger to human life (i.e. death) exists, if the concentration of CO2 in atmospheric air exceeds ______________ percent (by volume)?
Question 2
Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid flow control. It is caused due to_________________?
Question 3
Which of the following is a green house gas other than CO2 ?
Question 4
Foaming and priming in boiler operation can be reduced by reduction in ______________ in feed water?
Question 5
The amount of chemical coagulant added for treatment of polluted water ______________ with increase in temperature of the polluted water to be treated?
Question 6
A ‘body’ which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the________________?
Question 7
High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes____________________?
Question 8
Exposure to chemicals having carcinogenic properties cause___________________?
Question 9
Presence of high concentration of ozone and smog in atmospheric air causes the __________________?
Question 10
Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?