Assertion and Reason

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31 Assertion (A) 2 Bats can fly in the night.
Reason (R) : Bats emit ultrasonics.

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.
C
A is true but R is false.
D
A is false but R is true.

32 Assertion (A) : A little gap is lefl between iron rails.
Reason (R) : Iron expands in summer.

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.
C
A is true but R is false.
D
A is false but R is true.

33 Assertion (A) : Leaves of plants are green.
Reason (R) : Plants contain chromoplasts, the green pigment.

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.
C
A is true but R is false.
D
A is false but R is true.

34 Assertion (A) : We prefer to wear white clothes in winter.
Reason (R) : White clothes are good reflectors of heat.

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.
C
A is true but R is false.
D
A is false but R is true.

35 Assertion (A) Baking soda creates acidity in the stomach.
Reason (R) : Baking soda is alkaline.

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.
C
A is true but R is false.
D
A is false but R is true.

36 Assertion (A) : In India, people elect their own representatives.
Reason (R) : India is a democracy.

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.
C
A is true but R is false.
D
A is false but R is true.

37 Assertion (A) : Bulb filament is made of Titanium.
Reason (R) s The filament should have low melting point.

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.
C
A is true but R is false.
D
Both A and R are false.

38 Assertion (A) : Ventilators are provided near the roof.
Reason (R) : Conduction takes place better near the roof.

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.
C
A is true but R is false.
D
A is false but R is true.

39 Assertion (A) : The use of chlorofluoro carbons is banned throughout the world nowadays.
Reason (R) : These chemicals cause skin cancer.

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.
C
A is true but R is false.
D
A is false but R is true.

40 Assertion (A) : Bronze is used for making statues.
Reason (R) : Bronze is an alloy of copper and tin.

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.
C
A is true but R is false.
D
A is false but R is true.