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. |
C) A is true but R is false. |
1). Assertion (A) : Vitamins are nutrients required in small quantities for good health. Reason (R ) : Vitamins help to maintain a healthy body by killing harmful bacteria.
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2). Assertion (A) : Radio does not work in a moving train unless aerial is put outside the window. Reason (R ) : Train compartment acts as a hollow cylinder and charge is centred which does not allows a radio to work.
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3). Assertion (A) : Transfer of genetic information from one generation to the next is accomplished by DNA. Reason (R ) : DNA is fundamentally an antigen antibody reaction.
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4). Assertion (A) : When a wheel is in motion, a point (on the rim) which is farthest away from the ground will have the highest speed while the point (on the rim) closed to the ground will have the lowest speed. Reason (R ) : The speed of the point on the rim in the direction of motion and along the circumference of the wheel are additive.
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5). Assertion (A) : Some plants flower only during spring season. Reason (R ) : Day length affects flowering in plants.
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6). Assertion (A) : The flash of lightning is seen before the sound of thunder is heard. Reason (R ) : The sound of thunder is produced after the flash of lightning.
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7). Assertion (A) : The main source of energy in most of the Indian diets is carbohydrate. Reason (R ) : Carbohydrate provides more energy per gram than proteins and fats.
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8). Assertion (A) : Most of the time individual rain drops hit the earth's surface with constant velocities. Reason (R ) : When an object falls through a viscous fluid, it attains a constant terminal velocity after sometime.
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9). Assertion (A) : Dry battery cannot be recharged. Reason (R ) : The chemical reaction is reversible.
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10). Assertion (A) : Ventilators are provided near the roof. Reason (R ) : Conduction takes place better near the roof.
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