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Question (1)

QN0038451

An ideal gas undergoes four different processes from the same initial state (figure). Four processes are adiabatic, isothermal, isobaric and isochoric. Out of and 4 which one is adiabatic?

(A)
4
(B)
3
(C)
2
(D)
1

Correct Answer: C

Explanation:

For the straight line in the graph denoted by 4 , that shows pressure is constant, so curve 4 represents an isobaric process.

For the straight line in graph denoted by 1 , that shows volume is constant, so curve 1 represents isochoric process. Out of curves 3 and 2, curve 2 is steeper. Hence, curve 2 is adiabatic and curve 3 is isothermal.

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Question (2)

QN0038452

If an average person jogs, he produces . This is removed by the evaporation of sweat. The amount of sweat evaporated per minute (assuming requires cal for evaporation) is

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

As we know that amount of sweat evaporated/minute Sweat produced/ minute

Number of calories required for evaporation

Latent heat (in )

calories are needed to convert into stream.

1 cal. will produce sweat

cal will produce (sweat)

.

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Question (3)

QN0038453

Consider diagram for an ideal gas shown in figure.
Out of the following diagrams, which figure represents the diagram?

(I)
(II)
(III)
(IV)
`

(A)
(iv)
(B)
(ii)
(C)
(iii)
(D)
(i)

Correct Answer: C

Explanation:

According to given diagram that constant

So we can say that the gas is going through an isothermal process.

If pressure increase at constant temperature volume decreases, the graph (iii) shows that pressure is smaller at point 2 and larger at point 1 point so the gas expands and pressure decreases. Hence verifies option (c).

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Question (4)

QN0038454

An ideal gas undergoes cyclic process as shown in given diagram. The amount of work done by the gas is

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

According to the given - diagram.

Work done in the process

Here the direction of arrow is anti-clockwise, so work done is negative.

Hence, work done by the gas

That shows external work done on the system.

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Question (5)

QN0038455

Consider two containers and containing identical gases at the same pressure, volume and temperature. The gas in container is compressed to half of its original volume isothermally while the gas in container is compressed to half of its original value adiabatically. The ratio of final pressure of gas in to that of gas in is

(A)
(B)
(C)
(D)

Correct Answer: A

Explanation:

Let us consider the diagram for container (isothermal) and for container (adiabatic).

Container

(Isothermal)

In both process compression of the gas.

For isatherma process (gas ) during

For adiabatic process, (gas ) during

So, ratio of final pressure

where, is ratio of specific heat capacities for the gas.

Hence, verifies the option (a).

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Question (6)

QN0038456

Three copper blocks of masses and respectively are brought into thermal contact till they reach equilibrium. Before contact, they were at ). Assuming there is no heat loss to the surroundings, the equilibrium temperature is ( is specific heat of copper)

(A)
(B)
(C)
(D)

Correct Answer: B

Explanation:

Consider the equilibrium temperature of the system is . Let us consider, .

As given that, there is no net loss to the surroundings.

Heat lost by Heat gained by Heat gained by

(where, is specified heat of the copper material)

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Question (1)

An ideal gas undergoes four different processes from the same initial state (figure). Four processes are adiabatic, isothermal, isobaric and isochoric. Out of and 4 which one is adiabatic?

Explanation:

Link:

Question (2)

If an average person jogs, he produces . This is removed by the evaporation of sweat. The amount of sweat evaporated per minute (assuming requires cal for evaporation) is

Explanation:

Link:

Question (3)

Consider diagram for an ideal gas shown in figure.
Out of the following diagrams, which figure represents the diagram?

(I)
(II)
(III)
(IV)
`

Explanation:

Link:

Question (4)

An ideal gas undergoes cyclic process as shown in given diagram. The amount of work done by the gas is

Explanation:

Link:

Question (5)

Explanation:

Link:

Question (6)

Three copper blocks of masses and respectively are brought into thermal contact till they reach equilibrium. Before contact, they were at ). Assuming there is no heat loss to the surroundings, the equilibrium temperature is ( is specific heat of copper)

Explanation:

Link:

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Question (1)

An ideal gas undergoes four different processes from the same initial state (figure). Four processes are adiabatic, isothermal, isobaric and isochoric. Out of and 4 which one is adiabatic?

Explanation:

Link:

Question (2)

If an average person jogs, he produces . This is removed by the evaporation of sweat. The amount of sweat evaporated per minute (assuming requires cal for evaporation) is

Explanation:

Link:

Question (3)

Consider diagram for an ideal gas shown in figure.Out of the following diagrams, which figure represents the diagram? (I)(II)(III)(IV)`

Explanation:

Link:

Question (4)

An ideal gas undergoes cyclic process as shown in given diagram. The amount of work done by the gas is

Explanation:

Link:

Question (5)

Explanation:

Link:

Question (6)

Three copper blocks of masses and respectively are brought into thermal contact till they reach equilibrium. Before contact, they were at ). Assuming there is no heat loss to the surroundings, the equilibrium temperature is ( is specific heat of copper)

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY

Consider diagram for an ideal gas shown in figure.
Out of the following diagrams, which figure represents the diagram?

(I)
(II)
(III)
(IV)
`