In the following question, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) At constant temperature, PV vs V plot for real gases is not a straight line.

Reason (R) At high pressure all gases have Z > 1 but at an intermediate pressure, most gases have Z < 1.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true R is not the correct explanation of A

(c) A is true but R is false

(d) A is false but R is true

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Solution

Answer: (b) Both A and R are true R is not the correct explanation of A

Both assertion and reason are the true reason is not the correct explanation of assertion. At constant temperature, PV vs V for real gases is not a straight line because real gases have intermolecular forces of attraction.

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Similar questions

Q. Assertion (A): At constant temperature,

P V

P

plot for real gases is not a straight line.
Reason (R): At high pressure all gases have

(Z > 1)

but at intermediate pressure most gases have

(Z < 1)

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(b) Both A and R are true but R is not the correct explanation of A

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In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) At critical temperature liquid passes into gaseous state imperceptibly and continuously.

Reason (R) The density of liquid and gaseous phase is equal to crictical temperature.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not the correct explanation of A

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Answer: (b) Both A and R are true R is not the correct explanation of A Both assertion and reason are the true reason is not the correct explanation of assertion. At constant temperature, PV vs V for real gases is not a straight line because real gases have intermolecular forces of attraction.

Answer: (b) Both A and R are true R is not the correct explanation of A

Both assertion and reason are the true reason is not the correct explanation of assertion. At constant temperature, PV vs V for real gases is not a straight line because real gases have intermolecular forces of attraction.