OCE551 UNIT4 by SANGEETHA.R https://padlet.com/sangeethacivil/3b9y18klb6otsvuo MCQs en-us 2021-09-11 05:15:00 UTC 2025-11-19 14:24:30 UTC hello@padlet.com https://padlet.net/icons/png/1f600.png MCQs sangeethacivil https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732303153 2021-09-11 06:31:50 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732303153 19ucse057 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732306158 Bio-scrubber: 
Bio-scrubbers or Biological scrubbers are the 
biological reactors, used to remove Volatile Organic 
Compounds (VOCs) and odorous molecules (like H2S 
and organic sulphides) present in industrial gaseous 
emissions.]]> 2021-09-11 06:37:53 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732306158 19ucse023 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732310132 Bio-filters:Bio filtration is air pollution control technique which Involves bio degradation of contaminants under the action of microorganisms diffused in a thin layer of moisture known as  "bio-film" ,Mainly used for elimination of malodorous  gas emissions and low concentrations of Volatile Organic Compounds (VOCs).]]> 2021-09-11 06:44:46 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732310132 19ucse010 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732313691 nitric acid is removed from atmosphere:
Fuel- denitrogenation
Tailend control equipment
Strong oxidation by Kmno4]]> 2021-09-11 06:50:34 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732313691 19ucse036 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732313761 Wet scrubbers are classified into ____ types.
a) 2
b) 3
c) 5
d) 6
ANSWER (b)]]> 2021-09-11 06:50:42 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732313761 1. In bioscrubber a large number of soluble and biodigradeable molecules are transferred. a) Aquous Phase b) Gaseous Phase c) Solid Phase https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732315261 Answer A]]> 2021-09-11 06:53:54 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732315261 Absorption https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732315353


In the context of air pollution control, absorption involves the transfer of a gaseous pollutant from the air into a contacting liquid, such as water. The liquid must be able either to serve as a solvent for the pollutant or to capture it by means of a chemical reaction.
]]> 2021-09-11 06:54:05 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732315353 19ucse018 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732316498 The major FGD processes are, 
./ Limestone scrubbing - - 
./ Lime scrubbing 
./ Dual Alkali processes 
./ Lime-spray drying 
./ Wellman-Lord process]]> 2021-09-11 06:56:04 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732316498 19ucse101 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732316521  Adsorption, is a surface phenomenon. The gas molecules are sorbed—attracted to and held—on the surface of a solid. Gas adsorption methods are used for odour control at various types of chemical-manufacturing and food-processing facilities, in the recovery of a number of volatile solvents (e.g., benzene), and in the control of VOCs at industrial facilities.Activated carbon is one of the most common adsorbent materials.]]> 2021-09-11 06:56:07 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732316521 19UCSE077 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732316522 What is a condensation technique in the control of gaseous contaminants?

Condensation is a process used heavily throughout industry to convert a gas or vapor to liquid. ... If this is true, the total gas stream can be reduced in temperature to below the pollutant's dew point, which will then separate the pollutant from the remaining gas stream as a liquid.
]]> 2021-09-11 06:56:07 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732316522 19ucse102 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732317434 The waste products from bin-scrubbers? 
1. A discharge laden with salts and COD that cannot be 
degraded biologically. 
2; Sludge discharged from the bioreactor. (This must 
be removed in an environment- conscious manner) .]]> 2021-09-11 06:57:55 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732317434 19ucse087 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732317465 Air Pollution Index is the index of quality of air based on air pollutants and it is calculated from various air pollution data.]]> 2021-09-11 06:58:00 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732317465 19ucse094 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732318386 Which act was passed to protect and improve the quality of our environment?
a) The Mental Healthcare Act
b) The Coal Mines Act
c) The National Sports University Act
d) Environment Protection Act


Answer: d
]]> 2021-09-11 06:59:56 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732318386 19UCSE052 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732320179
Incineration
Incineration is a method of treating waste which involves the combustion of the organic substances found in waste materials. ... During the process of incineration, the organic component of these compounds is destroyed and any chlorine present is converted into HCl.
]]> 2021-09-11 07:03:24 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732320179 19UCSE080 https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732368725 Which of the following is not an adsorbent?
a) Carbon
b) Polymers and resins
c) Clay
d) Dry sponge
Answer: d]]> 2021-09-11 08:25:51 UTC https://padlet.com/sangeethacivil/3b9y18klb6otsvuo/wish/1732368725