Dacron
Nylon
Cellulose
None of these
✅ The correct answer is option C.
Chemical Engineering MCQs
Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as
hardeners
anti-shrinkage agents
plasticisers
transparency improver
✅ The correct answer is option C.
Styrene butadiene rubber (SBR) is never used for making
coated fabrics
front wheel tyres of aeroplanes (i.e., heavy duty tyres)
gaskets
soles of shoes
✅ The correct answer is option B.
Polymerisation process in which two or more monomers of chemically different nature take part is called
copolymerisation
addition polymerisation
chain polymerisation
none of these
✅ The correct answer is option A.
Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇋ PCl3 + Cl₂.Degree of dissociation of PCl5 will
A. Decrease on addition of Cl₂
B. Increase on addition of an inert gas at constant pressure
C. Decrease on increasing the pressure of the system
D. None of these
✅ The correct answer is option D.
If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the
A. Process must be isobaric
B. Temperature must decrease
C. Process must be adiabatic
D. Both B and C
✅ The correct answer is option D.
At a given temperature, the volume of a gas dissolved in a solvent __________ with increase in pressure.
A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the gas
✅ The correct answer is option C.
Equilibrium constant of a reaction varies with the
A. Initial concentration of the reactant
B. Pressure
C. Temperature
D. None of these
✅ The correct answer is option C.
In a working refrigerator, the value of COP is always
A. 0
B. < 0
C. < 1
D. > 1
✅ The correct answer is option D.
Plasticisers are added to synthetic plastics to
impart flexibility.
improve workability during fabrication.
develop new improved properties not present in the original resin.
all (a), (b) and (c).
✅ The correct answer is option D.