Chemical Engineering · all questions

Chemical Engineering Thermodynamics
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Q1

Sublimation temperature of dry ice (solid CO₂) is __________ °C.

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Q2

The equation relating E, P, V and T which is true for all substanes under all conditions is given by

(\frac{\partial E}{\partial V})_{T} = T \cdot (\frac{\partial P}{\partial T})_{H} - P .

This equation is called the

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Q3

Henry's law is closely obeyed by a gas, when its __________ is extremely high.

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Q4

If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero.

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Q5

The ammonia synthesis reaction represented by N₂ + 3H₂ ⇋ 2NH₃; ΔH = -22.4 kcal, is

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Q6

Free energy changes for two reaction mechanism 'X' and 'Y are respectively - 15 and - 5 units. It implies that X is

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Q7

Which of the following has the minimum value of COP for a given refrigeration effect?

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Q8

No work is done by the system, when a reaction occurs at constant

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Q9

In the reaction, H₂ +

I_{2}

⇋ 2H

I

, addition of an inert gas will

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Q10

The work done in isothermal compression compared to that in adiabatic compression will be

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Q11

What happens in a reversible adiabatic expansion process?

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Q12

Which of the following is affected by the temperature?

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Q13

Which is an example of closed system?

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Q14

Entropy of an ideal gas depends upon its

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Q15

At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

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Q16

Partial molal quantities are important in the study of

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Q17

For organic compounds, group contribution method can be used for the estimation of

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Q18

The efficiency of a Carnot heat engine operating between absolute temperatures T₁ and T₂ (when, T₁ > T₂) is given by

\frac{T _{1} - T _{2}}{T _{1}} .

The co-efficient of performance (C.O.P.) of a Carnot heat pump operating between T₁ and T₂ is given by

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Q19

Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.

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Q20

At the critical point of a substance

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