Question # 1

A microphone converts mechanical wave energy into.

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Video signals

Ausio and video signals

Audio signals

None of these

Star's distance are measured in

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Kilometeres

Miles

Light years

Nauticalmiles

Chromosomes are........... structures.

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Round

Circular

Long

Thread like

All parts of the nervous system. i.e. brain , spinal cord and nerves are made up of.

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CNS

PNS

Neurons

Nerve impulses

All the food chains are joined together to form .....

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Food web

Ecologicla pyramid

Tropicla level

None of these

Sodium hydroxide solution in water will

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Turn blue litmus red

Give pink colour with phenolpthalein

Give red colour with methyl orange.

Not affect the phenolphthalein indicator

Every bacterium of the colony contains a copy of gene of desired.

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Bacterial

Protein

DNA

Nucleus

It is an anti -viral proteins.

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Vaccines

bet- endorphin

Interferon

Growth hormone

An element of group 17 of the Periodic Table.

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Cl

Ar

S

Si

The astronauts were a specially designed suite called.

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Space appron

Space dress

Space suit

Space sheet

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

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Ductile

Solid

Hard

Brilliant

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