Question # 1

Changing of substances directly from solid state to gaseous state on beating is termed as.

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Boiling

Diffusion

Melting

Sublimation

Gastric guice consist of.

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Hydrochloric acid

Enzyme

Water

All a,b, and c

A magnet can lose its magnetc peroperty it is called.

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Magenetism

Demagnetization

Magnetic field

None of these

Which of the following is a homogeneous mixture.

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Soil

Steel

Iron

graphite

Matter exist in

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Solid

Liquid

gas

All of these

Choose an atom which can-exist idenpendently at room temperature.

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Na

O

Ne

Cu

Which one of the following is a non metallic element.

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Oxygen

Aluminium

Iron

Beryllium

Which one of the following is a metalloid element.

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Gold

Boron

Silver

Nitrogen

Which of the following is opposite the boiling?

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Evaporation

Melting

Condensation

Freezing

When a gas condenses, it becomes a

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Solid

Liquid

Crystal

Another gas

Nutrients which are quick source of energy.

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Protein

lipids

Carbohydrate

Vitamin

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