Question # 1

Bases react with acids to form water and........

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Hydrogen ions

Ammonia

Salt

Hydroxide ions

Telescope on the Earth suffers from the defect that light coming from the stars has to pass through.

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Space

Water

Atmosphere

Clouds

Spectroscope is an instrument used to edamine the wavelength of.

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Water waves

Sound waves

Light waves

Air waves

The three key ingredients used in making soap are.

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Oil, lye, water

NaOH , Oil, lye

Glycerol, oill, lye

glycerol, water, oil

The basic physical and functional unit of heredity is called.

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DNA

RNA

Centronere

Gene

In pea, there are chromosomes.

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14

16

20

48

During photosynthesis in plants, carbon dioxide CO2 and water react to produce.

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Water

Energy

Glucoe

CO2

بائیو پلاسٹک بنی ہوتی ہے.

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فیٹس

گلوکوز

پروٹین

سٹارچ

A relationship where two species live together closely is called

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Symbiosis

Predation

Competitor

None of these

Green house gases is

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Carbon di oxide

Methane

Oxides of nitrogen

All these

In meiosis, the nucleus of a cel dividies.

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One time

Three times

Four times

Five times

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