4761. For a real gas, the chemical potential is given by
A. RT dlnP
B. RT dlnf
C. R dlnf
D. None of these
✅ The correct answer is option B.
Chemical Engineering
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4762. Which of the following types of polymers has the strongest inter particle forces ?
Elastomers
Fibres
Thermoplastics
Thermosetting polymers
✅ The correct answer is option D.
4763. Which of the following will increase the volume of a real gas by four times ?
A. Doubling the absolute temperature as well as pressure of the gas
B. Reducing pressure to one fourth at constant temperature
C. Reducing temperature to one fourth at constant pressure
D. Reducing the temperature to half and doubling the pressure
✅ The correct answer is option B.
4764. Silicone is a/an
monomer
inorganic polymer
thermoplastic material
a natural polymer
✅ The correct answer is option B.
4765. Pick out the wrong statement regarding the solubility characteristics of high polymers.
Greater the degree of cross-linking in the polymer, lesser is its solubility.
Polymers having more aliphatic character are more soluble in aliphatic solvents, while those polymers having more aromatic character are more soluble in aromatic solvents.
Swelling tendency or solubility of polymers in a particular solvent decreases with increase in molecular weight of the solvent.
High molecul ar weight polymers on dissolving gives solution of very low viscosity.
✅ The correct answer is option D.
4766. The organic acid monomer in nylon 66 is
sebasic acid
terephthalic acid
adipic acid
benzoic acid
✅ The correct answer is option C.
4767. Efficiency of a Carnot engine working between temperatures T₁ and T₂ (T₁ < T₂) is
A. (T₂ – T₁)/T₂
B. (T₂ – T₁)/T₁
C. (T₁ – T₂)/T₂
D. (T₁ – T₂)/T₁
✅ The correct answer is option A.
4768. The work done in an adiabatic change in a particular gas depends upon changes in the __________ only.
A. Temperature
B. Specific heat
C. Volume
D. Pressure
✅ The correct answer is option A.
4769. In case of the decomposition of hydroiodic acid (2HI ⇋ H₂ + I₂), addition of H₂ (at equilibrium condition) will
A. Increase the partial pressure of I₂
B. Decrease the partial pressure of HI
C. Diminish the degree of dissociation of HI
D. None of these
✅ The correct answer is option C.
4770. Pick out the correct statement.
Plastics are good conductors of heat and electricity.
All the polymers are highly crystalline in nature
Polymers can be vaporised by heating to a very high temperature.
The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation.
✅ The correct answer is option D.