5841. Methyl iso-cynate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of __________ toxic gas.
Moderately
Highly
Extremely
Very extremely
✅ The correct answer is option D.
Chemical Engineering
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5842. Color test of water is done with an instrument called
Tintometer
Colorimeter
Electro-chemical cell
Turbidimeter
✅ The correct answer is option A.
5843. Polyvinyl chloride containers are not suitable for storing
Foodstuffs
Woolen clothes
Metallic powder
None of these
✅ The correct answer is option A.
5844. In large thermal power stations very fine particulates present in flue gas are removed by
Wet scrubber
Bag filter
Electrostatic precipitators
Dust catcher
✅ The correct answer is option C.
5845. Operating principle of cyclone separator is based on the action of __________ dust particles.
Diffusion of
Centrifugal force on
Gravitational force on
Electrostatic force on
✅ The correct answer is option B.
5846. The amount of chemical coagulant added for treatment of polluted water __________ with increase in temperature of the polluted water to be treated.
Decreases
Increases
Remains constant
May increase or decrease ; depends on the chemical characteristics of polluted water
✅ The correct answer is option A.
5847. Which of the following is not a practical method of low level radioactive waste disposal?
Dilution with inert material
Discharging to atmosphere through tall stacks after dilution
Disposing off in rivers & oceans
Filling in steel crates and shooting it off out of earth
✅ The correct answer is option D.
5848. The widest explosive limit is of __________ , thereby making it the most explosive gas.
Acetylene
Petrol vapor
Hydrogen
Carbon monoxide
✅ The correct answer is option A.
5849. The pH value of potable water should be between
1 to 1.5
6.5 to 8
13 to 14
4 to 5
✅ The correct answer is option B.
5850. Presence of __________ in water stream are deleterious to aquatic life.
Soluble and toxic organics
Suspended solids
Heavy metals and cynides
All of the above
✅ The correct answer is option D.