polystyrene
polythene
polypropylene
PVC
✅ The correct answer is option A.
Chemical Engineering MCQs
Synthetic rubber
deforms, if stretched to double of its original dimension.
is brittle at low temperature
is softer at higher temperature.
is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases.
✅ The correct answer is option D.
The repeating units of PTFE are
Cl2CH-CH3
F2 C = CF2
F3 C-CF3
FClC = CF2
✅ The correct answer is option B.
The specific heat of saturated water vapour at 100°C is
A. ∞
B. -ve
C. 0
D. +ve
✅ The correct answer is option B.
Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids ?
Starch
Cellulose
Proteins
Nucleic acids
✅ The correct answer is option C.
With increase in temperature, the atomic heat capacities of all solid elements
A. Increases
B. Decreases
C. Remains unchanged
D. Decreases linearly
✅ The correct answer is option A.
Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the
A. Cold reservoir approaches zero
B. Hot reservoir approaches infinity
C. Either A or B
D. Neither A nor B
✅ The correct answer is option C.
__________ is not a polyester fibre.
Terylene
Dacron
Nylon
Polyacrylonitrite
✅ The correct answer is option C.
Teflon is
phenol formaldehyde
an inorganic polymer
polytetra florouethylene (PTFE)
a monomer
✅ The correct answer is option C.
In an ideal refrigeration cycle, the change in internal energy of the fluid is
A. +ve
B. -ve
C. 0
D. Either of the above three ; depends on the nature of refrigerant
✅ The correct answer is option C.