Assertion (A) & Reason (B) MCQ

MCQ 11 Mark

Assertion (A):The door of a refrigerator remains tightly closed.
Reason : magnet used in refrigerator door keep it tightly closed.

✓
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: A.

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

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MCQ 21 Mark

Assertion (A) : A freely suspended magnet always points in the east-west direction.
Reason : Like magnetic poles repel each other, unlike magnetic poles attract each other.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
✓
(A) is false but (R) is true.

Answer

Correct option: D.

(A) is false but (R) is true.

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MCQ 31 Mark

Assertion (A) : Every magnet, has a north pole and a south pole.
Reason : It is possible to have a magnet having only one pole.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true and (R) is not the correct explanation of (A).
✓
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: C.

(A) is true but (R) is false.

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MCQ 41 Mark

Assertion (A) : Materials that are not attracted towards magnet are called nonmagnetic.
Reason: Non-magnetic materials cannot be converted into magnets.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
✓
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: B.

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

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MCQ 51 Mark

Assertion (A) : Bar magnets are kept in pairs with their unlike poles on the same side.
Reason : Magnets become weak if they are not stored properly.

✓
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: A.

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

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MCQ 61 Mark

Assertion (A): Substances having the property of attracting pieces of iron or some other magnetic substances are called magnets.
Reason (R): Magnetite is called natural magnet.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
✓
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: B.

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

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MCQ 71 Mark

Assertion (A): The process of making magnet from iron is natural method.
Reason (R): There are different shapes of magnet like bar magnet, horse-shoe magnet, ball or cylindrical ended magnet.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
✓
(A) is false but (R) is true.

Answer

Correct option: D.

(A) is false but (R) is true.

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MCQ 81 Mark

Assertion (A): Opposite poles of two magnets attract each other whereas similar poles repel one another.
Reason (R): A freely suspended magnet always aligns in North-South direction.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
✓
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: B.

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

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MCQ 91 Mark

Assertion (A): There is only one pole of bar magnet.
Reason (R): A magnet has North (N) and South (S) pole.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
✓
(A) is false but (R) is true.

Answer

Correct option: D.

(A) is false but (R) is true.

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MCQ 101 Mark

Assertion (A): Magnet that attracts materials like iron (Fe), nickel (Ni), cobalt (Co) are called magnetic materials.
Reason (R): Materials that are not attracted towards magnet are called non-magnetic materials.

A
Both (A) and (R) are true and (R) is the correct explanation of (A).
✓
Both (A) and (R) are true and (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false but (R) is true.

Answer

Correct option: B.

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

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Science Assertion (A) & Reason (B) MCQ

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