The Ozone Layer thins down as a result of a chain chemical react

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11.

The Ozone Layer thins down as a result of a chain chemical reaction that separates from the layer

  • Oxygen

  • Chlorine

  • Nitrogen

  • Nitrogen


A.

Oxygen

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12.

Joint SAARC University of eight SAARC Nations has been established in

  • Colombo

  • Dhaka

  • Kathmandu

  • Kathmandu

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13.

Which country recently produced the world's first cloned rabbit using a biological process that takes cells from a fetus?

  • U.K.

  • China

  • U.S.A.

  • U.S.A.

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14.

Which one of the following Vitamins is responsible for blood clotting?

  • Vitamin A

  • Vitamin E

  • Vitamin C

  • Vitamin C

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15.

Galvanometer is an instrument to measure

  • relative density of liquids

  • electic currents

  • pressure of gases

  • pressure of gases

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