Question # 1

The speed of sound in air is.

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100 m/s

300 m/s

100 m/s

330 m/s

The Earth's gravitational field strength is.

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1.6 N/kg

16 N/kg

10 N/kg

1N/kg

Growth of microorganisms canbe controlled by

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Dehydration

Drying

Adding preservative

a,b,c all

A substance that speed up the chemical reactions is called.

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Solute

Solvent

Solution

Catalyst

A piece of iron is kept in open air for 5 days. A film of corrosion formed over it is.

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Iron oxide

Iron sulphide

Iron Chloride

Iron Hydride

The fungal body consist of filaments called.

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Mitochondria

Nucleus

Hyphae

Pili

Conservation of water means.

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A using water

Save water

Avoiding water

Wasting water

The negetively charged particle arod nucleus are called.

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Electron

Proton

Atom

Neutron

The type of immunity in which readmade antibodies are transfered to individual.

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Adaptive immunity

Passive immunity

Active immunity

Innate immunity

Aerobic respiation takes place in.

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Mitochondria

Chloroplast

Nucleus

Blood vessels

An empty steel container is sealed and heated, which of the following properties of the gas is likely to increase.

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Mass

Pressure

Volume

Density

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