Assertion - Reasoning (1 Marks) - Science STD 10 Questions

Question 11 Mark

Assertion (A): Sodium metal is stored under Kerosene.
Reason (R): Metallic sodium melts when exposed to air

Answer

(c) A is true but R is false.
Explanation: A is true but R is false.

Question 21 Mark

Assertion (A): Asexual reproduction is a primitive type of reproduction.
Reason (R): Asexual reproduction involves only mitotic cell division.

Answer

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

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Question 31 Mark

Assertion (A): Force experienced by moving charge will be maximum if direction of velocity of charge is perpendicular to applied magnetic field.
Reason (R): Force on moving charge is independent of direction of the applied magnetic field.

Answer

(c) A is true but R is false
Explanation: From equation $F = qvB \sin \theta$
Force on moving charge will be maximum if the direction of the velocity of charge is perpendicular to direction of magnetic
field (when $\theta=90^{\circ}$ )

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Question 41 Mark

Assertion (A): Ecology is study of relationship between living organisms and their environment.
Reason (R): The biotic community and non-living environment of an area function together to form an ecosystem.

Answer

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

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Science Assertion - Reasoning (1 Marks)

Assertion - Reasoning (1 Marks)

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