Question # 1

Carbon cycle and ............. cycle are teh processes in whihc these minerals circulate between the organisms and the environment.

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Hydrogen

Iodine

Oxygen

Nitrogen

Hubble telescope launched in space.

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1990

1991

1992

1993

All the food chains are joined together to form .....

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Food web

Ecologicla pyramid

Tropicla level

None of these

The age of milky way Galaxy is about.

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13.6 billion years

13.4 billion years

13.5 billion years

13.7 bilion years

--------------- is used is solar cooker.

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Convex mirror

Concave mirror

Convex lens

Concave lens

pH value of milk of magnesia.

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7

11

9

14

Angle of incidence is equal to he angle of reflection ,It is first law of.

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Refraction

Dispersion

Reflection

Diffraction

Which fo these is NOT a genetic variation.

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Attached earlobes

Blood group

Eye colour

Mark of cut on skin

Allowy is ......... forms of metals mixed together.

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Solid

Gas

Normal

Molten

Acid used as a dehydrating agent.

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Nitric Acid

Phosphoric acid

Sulphuric acid

Hydrochloric acid

Which is used in UPS.

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Electric generator

Compressor

Electric motor

Inverter

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