Q181
Open questionDisinfection of water is done to remove
Select an option to see the answer and solution.
Chemical Engineering · all questionsEnvironmental Engineering
Environmental Engineering
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
307
Questions
10/16
Page
Pick an option on a question to see the right answer and solution.
Q182
Open questionWhich of the following pollutants is absent in the emissions from a fertiliser plant?
Select an option to see the answer and solution.
Q183
Open questionWhich is a secondary air pollutant?
Select an option to see the answer and solution.
Q184
Open questionWhich of the following is a secondary air pollutant?
Select an option to see the answer and solution.
Q185
Open questionReplenishment of dissolved oxygen in water stream polluted with industrial waste occurs by
Select an option to see the answer and solution.
Q186
Open questionThe weakest sound that can be heard by a person in a quiet environment is equivalent to __________ decibel.
Select an option to see the answer and solution.
Q187
Open questionSulphur dioxide present in the industrial chimney exhaust gases causes
Select an option to see the answer and solution.
Q188
Open questionWhich of the following is not a practical method of low level radioactive waste disposal?
Select an option to see the answer and solution.
Q189
Open questionWhich of the following sources is responsible for maximum air pollution?
Select an option to see the answer and solution.
Q190
Open questionPresence of a certain minimum quantity of flourine is desirable in potable water to prevent
Select an option to see the answer and solution.
Q191
Open questionInfective bacteria in water is killed by the __________ process.
Select an option to see the answer and solution.
Q192
Open questionOzone level is generally found to be depleted in India in the month of
Select an option to see the answer and solution.
Q193
Open questionIn troposphere (the weather domain), the temperature 't' at height 'h' above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)
Select an option to see the answer and solution.
Q194
Open questionThe commonest form of iron & manganese found in ground water as pollutant is in the form of their
Select an option to see the answer and solution.
Q195
Open questionWater filtration rate in a rapid sand filter ranges from __________ kilolitres/m2/hr.
Select an option to see the answer and solution.
Q196
Open questionOil and grease present in an emulsified state in waste water discharged from industries can be removed by
Select an option to see the answer and solution.
Q197
Open questionWhich of the following is a manmade source of air pollution?
Select an option to see the answer and solution.
Q198
Open questionThreshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm.
Select an option to see the answer and solution.
Q199
Open question80% less than 200 mesh size particles are called
Select an option to see the answer and solution.
Q200
Open questionRemoval of __________ is accomplished by aeration of water.
Select an option to see the answer and solution.