Question # 1

The ... prevents food from entering the trachea.

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Glottis

Epiglottis

Bronchi

Alveoli

Blue and ..... lifht is absorbed by chlorophyll.

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Yellow

Orange

Red

White

The temerature o boiling water in centigrade scale is.

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0 oC

32 oC

37 oC

100 oC

The genetic material of virus is called.

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Genome

Coat

Capsid

Spike

The contraction of the objects on cooling is due to.

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Reduction in size of the particles

Increase in size of the particles

Increase in inter particles distances

Decrease in inter particle distances

The mineral which help pant in production of Carbohydrates and fat is.

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Nitrogen

Magnesium

Oxygen

Carbon

An object is attracted towards the Earth due to.

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Pull

Push

Friction

Gravity

The middle strong vein in leaf is called.

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Blade

Petiole

Midrib

None of these

A solution is a

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Homogenous mixture

Heterogeneous mixture

Compound

Equal mixture

The maximum numebr of electrons that N-Shell accomodate are.

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2

8

18

32

When water molecule gain a proton it form

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H+

OH-

H3O

H2O

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