Perspex
Nylon-66
Polystyrene
Bakelite
✅ The correct answer is option B.
Chemical Process MCQs
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its
Poor oxidation stability and high gum forming tendency
Greater tendency of decomposition at elevated temperature
Hydrolysis tendency in presence of water
All of the above
✅ The correct answer is option D.
Hydrogen gas is not produced commercially (for nitrogeneous fertiliser manufacture) by
Iron-steam reaction
Electrolysis of water
Steam reforming of naphtha
Its cryogenic separation from coke oven gas
✅ The correct answer is option A.
Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
1-Feb
15 – 20
50 – 60
80 – 85
✅ The correct answer is option B.
Shrinkage volume in cement setting does not depend upon the
Sand to cement ratio
Water to cement ratio
Ambient temperature fluctuation
Drying period
✅ The correct answer is option A.
Liquefaction of gases can not be done by
Exchange of heat with colder stream
Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Merely compressing it beyond critical pressure
Adiabatic expansion against a piston or in a turbine
✅ The correct answer is option C.
Which of the following is a disacchride?
Sucrose
Glucose
Starch
Maltose
✅ The correct answer is option A.
Glycerine can be obtained from
Fat
Naphthalene
Cumene
Sucrose
✅ The correct answer is option A.
Poly tetraflouro ethylene (P.T.F.E.) is known as
Bakelite
Teflon
Celluloid
Decron
✅ The correct answer is option B.
Plasticisers are added to paints to
Make it corrosion resistant
Make glossy surface
Give elasticity & prevent cracking of the film
Increase atmospheric oxidation
✅ The correct answer is option C.