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Standard XII

Chemistry

Internal Energy

An ideal gas ...

Question

An ideal gas undergoing a change of state from A to B through four different paths I, II ,III and IV as shown in the P-V diagram that lead to the same change of state, then the change in internal energy is

Same in I and II but not in III and IV

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Same in III and IV but not in I and II

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Same in I,II and III but not in IV

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Same in all of the four cases

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Solution

The correct option is C Same in all of the four cases
Internal energy is a function of the state of a system and does not depend on the path. Therefore, internal energy will be same.

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Similar questions

Q. Four students observed an ideal gas undergoing a change of state from A to B. Their observations are along four different paths shown in the figure below. Their conclusions are as follows:

(P)

Change in internal energy is same in

I V

and

I I I

cases, but not in

I

and

I I

(Q)

Change in internal energy is same in all the four cases

(R)

Work done is maximum in case

I

(S)

Workdone is minimum in case

I I

Which option represents correct conclusions drawn by the students?

Q. Four students observed an ideal gas undergoing a change of state from A to B. Their observations are along four different paths shown in the figure below. Their conclusions are as follows:

(P)

Change in internal energy is same in

I V

and

I I I

cases, but not in

I

and

I I

(Q)

Change in internal energy is same in all the four cases

(R)

Work done is maximum in case

I

(S)

Workdone is minimum in case

I I

Which option represents correct conclusions drawn by the students?

Question 10
New species may be formed if

(i) DNA undergoes significant changes in germ cells.
(ii) Chromosome number changes in the gamete.
(iii) There is no change in the genetic material.
(iv) Mating does not take place.

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii), (iii) and (iv)
(d) (i), (ii) and (iii)

Q. Question 10
New species may be formed if

(i) DNA undergoes significant changes in germ cells.
(ii) Chromosome number changes in the gamete.
(iii) There is no change in the genetic material.
(iv) Mating does not take place.

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii), (iii) and (iv)
(d) (i), (ii) and (iii)

Q. Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air ?
(i) increase in pressure
(ii) increase in temperature
(iii) decrease in pressure
(iv) decrease in temperature

(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iii)
(d) (ii) and (iv)

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An ideal gas undergoing a change of state from A to B through four different paths I, II ,III and IV as shown in the P-V diagram that lead to the same change of state, then the change in internal energy is

The correct option is C Same in all of the four casesInternal energy is a function of the state of a system and does not depend on the path. Therefore, internal energy will be same.

The correct option is C Same in all of the four cases
Internal energy is a function of the state of a system and does not depend on the path. Therefore, internal energy will be same.