Flammable in nature
Used in color discharge tube
Filled in lamps having tungsten filament
All of the above
✅ The correct answer is option B.
Chemical Process MCQs
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
High cost
Fragile nature
Easy poisoning tendency
All of the above
✅ The correct answer is option D.
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
L.D. converter
Blast furnace
Rotary kiln
Recuperator
✅ The correct answer is option D.
Main use of liquid nitrogen is in
Rocket propulsion
Making gun powder
Detergent manufacture
Refrigerative cooling
✅ The correct answer is option D.
The drug used in contraceptives is
Sulphadizene
Mestranol
Methyl salicylate
Pencillin
✅ The correct answer is option B.
Use of chlorine in the treatment of sewage
Helps in grease separation
Increases the biological oxygen demand(BOD)
Causes bulking of activated sludge
Aids in flocculation
✅ The correct answer is option A.
In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :
Furnace → converter → absorber
Furnace → evaporator → absorber
Furnace → converter → evaporator
Converter → furnace → absorber
✅ The correct answer is option A.
Wax is a
Mixture of glycerides
Mixture of esters of polyhydric alcohols excepting glycerine
Liquid at room temperature
Mixture of glycerides of fatty acids
✅ The correct answer is option B.
Flash point of most vegetable oils is about __________ °C.
50
100
200
300
✅ The correct answer is option C.
__________ is produced using polycondensation reaction.
Polythene
Phenol formaldehyde
Poly vinyl chloride
None of these
✅ The correct answer is option B.