Question # 1

Heating of solid potassium chlorate produces a gas.

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Chlorine

Carbon dioxide

Carbon mono oxide

Oxygen

There are ......... types of reflection

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2

3

4

5

The force acting normally unit area is.

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Strees

Strain

Motion

Pressure

An instrument that helps in seeing heavenly objects.

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microscope

Kaleidoscope

Telescope

Periscope

The feeding level of an organism in an ecosystem is called.

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Food Web

Food chain

Trophical level

Secession level

Some metals can be pulled into wire This is because metals are.

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Ductile

Solid

Hard

Brilliant

Thermal decompositionof calcium carbonate produces a gas.

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Oxygen

Carbon di oxide

Nitrogen

Carbon monoxide

The last stage in the life of massive star is

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Red Gaint

White dwarf

Super Giant

Black hole

Mass number is number of.

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Protons

Neutrons

Both a and b

Electrons

A symbiotic relationship in whihc both speciesl get benefit is called.

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Commensalism

Hebitate

Mutualism

Symbiosis

To make bioplastic, we heat the solution.

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70 oC

75 oC

80 oC

85 oC

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