Question # 1

Freezing of a liquid is a

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Chemical change

Chemicla property

Physical change

None of these

Which blood vessesl have valves in it.

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Capillaries

Artery

Vein

Arteriole

One gram of glucose produce abut.............. calories of energy .

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3600

3700

3800

3900

A solution is a

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Homogenous mixture

Heterogeneous mixture

Compound

Equal mixture

Moon revolves around the Earth due to.

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Pull

Push

Friction

Gravitational force

In Animals, exchange of gaes occure through.

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Liver

Heart

Brian

Lungs

The numebr of electorns present in an atom s equal to number of.

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Nucleus

Neutrons

Proton

Atom

Chemical bond between N2 Molecule is

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Ionic

Single covalent

Double covalent

Triple vocalent

In virus,..... is used to identify the host cell.

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Genome

Coat

Spike

Capsid

A molecule consists of two or more

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Compounds

Atoms

Formulae

Element

The temperature at which a liquid's vapour pressure is equal to the external pressure surrounding the liquid is.

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Melting point

Boiling point

Freezing point

Highest temperature.

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