Question # 1

Green house gases is

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Carbon di oxide

Methane

Oxides of nitrogen

All these

The basic particle of an element is called.

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Compound

Mixture

Atom

None of these

Bromine is

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Solid

Gas

Liquid

All of these

You are different from your brother and sisters This is called

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Adaptation

Variation

Mitosis

Hereditary

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

What is true formula.

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Densit = Mass x volume

Density = Mass/volume

Volume =Mass x volume

Density = volume/Mass

A relationship where two species live together closely is called

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Symbiosis

Predation

Competitor

None of these

During the combustion of fossil fuel. Which gas is ener the atmosphere.

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Nitrogen

Oxygen

Carbon di oxide

Hydrogen

GPS means

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Global pure system

Global positioning system

Global positioning satellite

Global pure satellite

Atomic number of th eelement of fourth position in second period.

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4

5

6

7

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