Assertion and Reason

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51 Assertion (A) : Telephone wires sag more in summer.
Reason (R) : They expand due to summer 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.

52 Assertion (A) : Amoebiasis is an occupational disease.
Reason (R) : Amoebiasis is caused by inhalation of asbestos dust.

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.

53 Assertion (A) : When common salt is kept open, it absorbs moisture from the air.
Reason (R) : Common salt contains magnesium chloride.

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.

54 Assertion (A) : In India, female s hav e higher life expectancy than the males.
Reason (R) : Female s receive a better diet.

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.

55 Assertion (A) : Legume s reviv e the soil fertility.
Reason (R) : Microbe s in the root nodules of legumes fix the atmospheric nitrogen.

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.

56 Assertion (A) : Cotton is grown in alluvial soils.
Reason (R) : Alluvial soils are very fertile.

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.

57 Assertion (A) : Glass tumbler breaks in winter when hot water is poured in it.
Reason (R) : When hot water is poured, the outer surface of glass expands.

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.

58 Assertion (A) : Carbon forms the largest number of compounds.
Reason (R) : Carbon has the catenation property.

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.

59 Assertion (A) : Downpour of rain lessens the humidity in the atmosphere.
Reason (R) : Rains are caused when atmosphere cannot hold more moisture.

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.

60 Assertion (A) : An iron ball floats on mercury but gets immersed in water.
Reason (R) : The specific gravity of iron is more than that of mercury.

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.