Thermodynamics for Chemical Archives

Enthalpy ‘H’ is defined as___________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

Enthalpy ‘H’ is defined as___________________?

A. H = E – PV
B. H = F – TS
C. H – E = PV
D. None of these

Enthalpy ‘H’ is defined as___________________? Read More »

The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is__________________?

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The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is__________________?

A. ∞
B. 1
C. 0
D. -ve

The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is__________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

When a gas in a vessel expands, its internal energy decreases. The process involved is________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

When a gas in a vessel expands, its internal energy decreases. The process involved is________________?

A. Reversible
B. Irreversible
C. Isothermal
D. Adiabatic

When a gas in a vessel expands, its internal energy decreases. The process involved is________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

For a single component two phase mixture, the number of independent variable properties are_________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

For a single component two phase mixture, the number of independent variable properties are_________________?

A. Two
B. One
C. Zero
D. Three

For a single component two phase mixture, the number of independent variable properties are_________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the__________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the__________________?

A. Calorific value
B. Heat of reaction
C. Heat of combustion
D. Heat of formation

Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the__________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

What is the value of ln y (where y = activity co-efficient) for ideal gases ?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

What is the value of ln y (where y = activity co-efficient) for ideal gases ?

A. Zero
B. Unity
C. Infinity
D. Negative

What is the value of ln y (where y = activity co-efficient) for ideal gases ? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ?

A. 0
B. 2
C. 1
D. 3

What is the number of degree of freedom for a system of two miscible non-reacting species in vapor-liquid equilibrium forming an azeotrope ? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________?

A. High temperature
B. Low pressure
C. Low temperature only
D. Both low temperature and high pressure

In the ammonia synthesis reaction, N2 + 3H2 ⇌ 2NH3 + 22.4 kcal, the formation of NH3 will be favoured by___________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be__________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be__________________?

A. 580
B. 640
C. 1160
D. Data insufficient; can’t be computed

Grams of butane (C4H10) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be__________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical

Joule-Thomson co-efficient for a perfect gas is_____________________?

CHEMICAL ENGINEERING, Thermodynamics for Chemical / admin

Joule-Thomson co-efficient for a perfect gas is_____________________?

A. Zero
B. Positive
C. Negative
D. None of these

Joule-Thomson co-efficient for a perfect gas is_____________________? Read More »

CHEMICAL ENGINEERING, Thermodynamics for Chemical