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Chemical Environmental Engineering Quiz 1

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Chemical Environmental Engineering Quiz 1

1 / 50

Direct reaction of unsaturated hydrocarbons with either NO or NO2 produces an eye irritating pollutant compound known as_________?

2 / 50

Deaeration of high pressure boiler feed water is done to reduce _____?

3 / 50

_______ cannot control the noise pollution ?

4 / 50

Disinfection of water is done to remove ________?

5 / 50

_______ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?

6 / 50

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?

7 / 50

Aerobic biological oxidation ponds used for the purification of polluted water___________?

8 / 50

Ethanolamine is an absorbent used for the removal of ______ from air/gas?

9 / 50

_____ substances present in sewage are removed in grit chamber during sewage treatment?

10 / 50

A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of ______ high above earth?s atmosphere, which absorbs it?

11 / 50

?Pneumoconiosis? is a disease caused by the inhalation of _______ dust?

12 / 50

Black smoke coming out of the chimney of a furnace is an indication of the use of _______ in the furnace?

13 / 50

Biological oxidation ponds remove organic matters present in the polluted water by ________?

14 / 50

Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of__________?

15 / 50

Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid flow control. It is caused due to__________?

16 / 50

Dust collection efficiency of a cyclone separator depends upon its_______?

17 / 50

Carcinogenic air pollutants cause___________?

18 / 50

80% less than 200 mesh size particles are called______?

19 / 50

COD of raw municipal sewage may be in the range of about ______ mg/litre?

20 / 50

A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from _______ ppm?

21 / 50

Brown spots in fabrics will be caused by washing with water containing large amount of_____?

22 / 50

Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is___________?

23 / 50

______ plant emits large amount of SO2 as an air pollutant?

24 / 50

A shallow pond in which the sewage is retained and biologically treated is called___________?

25 / 50

A man exposed to excessive noise level in the working environment may suffer from______?

26 / 50

Color test of water is done with an instrument called___________?

27 / 50

5-200 ?m size particles are called___________?

28 / 50

BOD of raw municipal sewage may be in the range of about ______ mg/litre?

29 / 50

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_________?

30 / 50

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in______?

31 / 50

Carbonaceous particles having size less than 1 ?m are called_____?

32 / 50

Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called_________?

33 / 50

?Safe limit? called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the______?

34 / 50

During sewage treatment, the sewage is subjected to _______ treatment in Imhoff tank?

35 / 50

Aerosols present in atmospheric air may be___________?

36 / 50

As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is ______ ?g/m3.(?g-microgram)?

37 / 50

Death may occur, when SO2 concentration in atmospheric air exceeds _______ ppm?

38 / 50

During which of the following operating conditions of an automobile, carbon monoxide content in the exhaust gas is maximum ?

39 / 50

Beyond what concentration of H2S in air, acute danger to human life exists ?

40 / 50

A standard test for determination of hardness in water is termed as _______ test?

41 / 50

Dissolved oxygen content in river water is around ______ ppm?

42 / 50

Automobile exhaust is passed through two compartments catalytic converter employing platinum as catalyst for_____?

43 / 50

Carbon monoxide is a pollutant, which causes__________?

44 / 50

Corrosion in boilers can be prevented by __________?

45 / 50

Acute danger to human life (i.e. death) exists, if the concentration of CO2 in atmospheric air exceeds _______ percent (by volume)?

46 / 50

A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called_____?

47 / 50

_______ is the process of killing organism in water ?

48 / 50

Arsenic pollutant is not generated in ________ industries?

49 / 50

_____ is removed from water by lime-soda process?

50 / 50

?Particulate? air pollutants are finely divided solids and liquids. Which of the following is not a ?particulate? ?

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Chemical Engineering Basics Quiz 1
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