Assertion & Reason

MCQ 11 Mark

Assertion: There are no effects on other ends when one end of the rod is only heated.
Reason: Heat always flows from a region of higher temperature to lower the temperature of the rod.

A
Both the assertion and the reason are true and the reason is the correct explanation of assertion.
B
Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
C
Assertion is true but the reason is false.
✓
Assertion is false but the reason is true.

Answer

Correct option: D.

Assertion is false but the reason is true.

(d) An assertion is false but the reason is true.
Explanation: There are small effects forms on another end when one end of the rod is only heated.

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MCQ 21 Mark

Assertion: Real expansion in liquids is always larger than apparent expansion.
Reason: Vessel of liquid expands 1st then the expansion of liquid in the vessel.

✓
Both the assertion and the reason are true and the reason is the correct explanation of assertion.
B
Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
C
Assertion is true but the reason is false.
D
Assertion is false but the reason is true.

Answer

Correct option: A.

Both the assertion and the reason are true and the reason is the correct explanation of assertion.

(a) Both assertion and reason are true and reason is the correct explanation of assertion.

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MCQ 31 Mark

Assertion: As the temperature of a gas increases the K.E of molecules increases, but P.E. decreases.
Reason: Due to the law of conservation of energy.

✓
Both the assertion and the reason are true and the reason is the correct explanation of assertion.
B
Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
C
Assertion is true but the reason is false.
D
Assertion is false but the reason is true.

Answer

Correct option: A.

Both the assertion and the reason are true and the reason is the correct explanation of assertion.

(a) Both assertion and reason are true and reason is the correct explanation of assertion.

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MCQ 41 Mark

Assertion: Air at some distance above the fire is hotter than the same distance sidewise.
Reason: Air surrounding the fire carries heat upward due to conventional current.

A
Both the assertion and the reason are true and the reason is the correct explanation of assertion.
✓
Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
C
Assertion is true but the reason is false.
D
Assertion is false but the reason is true.

Answer

Correct option: B.

Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.

(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
Explanation: Quantity of heat by hot air due to hot conventional current upward is larger by heat side wise due to radiation.

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MCQ 51 Mark

Assertion: Good conductors of heat are also a good conductor of electricity and vice-versa
Reason: Mainly electrons are responsible for there conduction.

✓
Both the assertion and the reason are true and the reason is the correct explanation of assertion.
B
Both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
C
Assertion is true but the reason is false.
D
Assertion is false but the reason is true.

Answer

Correct option: A.

Both the assertion and the reason are true and the reason is the correct explanation of assertion.

(a) Both assertion and reason are true and reason is the correct explanation of assertion.

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Science Assertion & Reason

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