02 Environmental Engineering Quiz | MCQ | Practice Test
1 >>Most of the atmospheric air pollutants are present in large quantity in ?- (A) stratosphere
- (B) thermosphere
- (C) trophosphere
- (D) mesosphere
- (A) Caustic embrittlement of boiler's metallic parts is caused by high concentration of caustic soda in boiler feed water.
- (B) Cooling and freezing of water kills the bacteria present in it.
- (C) With increasing boiler operating pressure of steam, the maximum allowable concentration of silica in feed water goes on decreasing.
- (D) Dissolved oxygen content in high pressure boiler feed water should be nil.
- (A) coal
- (B) uranium ore
- (C) iron ore
- (D) lime
- (A) bacterial stability factor.
- (B) relative stability.
- (C) biological oxygen demand (BOD).
- (D) oxygen ion concentration.
- (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone.
- (B) Troposhere is a dusty zone containing water vapor and cloud
- (C) Mesosphere is characterised by very low atmospheric pressure and low temperature.
- (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere.
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6 >>Most efficient and suitable dust removal equipment for removal of flyash from flue gas in a thermal power plant is the ?- (A) gravity settling chamber
- (B) cyclone separator
- (C) electrostatic precipitator
- (D) bag filter
- (A) Ozone
- (B) Photochemical smog
- (C) Sulphur dioxide
- (D) All (a), (b) & (c)
- (A) 1
- (B) 4
- (C) 8
- (D) 12
- (A) petroleum refineries.
- (B) coal based thermal power plants.
- (C) pulp and paper plant.
- (D) metallurgical roasting & smelting plant.
- (A) radioactive
- (B) organic
- (C) inorganic
- (D) none of these
Environmental Engineering Quiz | Environmental Engineering MCQ
- (A) 90
- (B) 120
- (C) 150
- (D) 200
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12 >>Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes ?- (A) fading of dyes on textiles.
- (B) corrosion, tarnishing & soiling of metals.
- (C) reduced strength of textiles.
- (D) all (a), (b) and (c).
- (A) Arizona (U.S.A.)
- (B) Chernobyl (undivided U.S.S.R.)
- (C) Pensylvania (U.S.A.)
- (D) Moscow (U.S.S.R.)
- (A) nitric acid making
- (B) nitrogenous fertiliser
- (C) detergent
- (D) any of these
- (A) 5
- (B) 100
- (C) 250
- (D) 500
- (A) biological oxidation.
- (B) skimming off.
- (C) settling out using chemical reagents.
- (D) chlorination.
- (A) decreases.
- (B) increases.
- (C) remains constant.
- (D) may increase or decrease ; depends on the chemical characteristics of polluted water
- (A) hydrocarbons
- (B) NOx
- (C) SO2
- (D) CO
- (A) grit
- (B) dust
- (C) powder
- (D) smoke
- (A) turbidity
- (B) disease
- (C) bad odour
- (D) bad taste & colour