Question # 1

A relationship where two species live togetehr closely is called.

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Mutualism

Commensalism

Symbiosis

Hebitate

The product fo the reaction between zinc and dilute sulphuric acid are.

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Zinc oxide and water

Zinc sulphide and water

Zinc sulphate and hydrogen

Zinc sulphide and hydrogen

.............. is a material whihc contains weaked or kille dpathogens.

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Protein

Vaccine

Insuline

Pancreas

You are different from your brother and sisters This is called

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Adaptation

Variation

Mitosis

Hereditary

The SI unit of voltage is.

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Watt

Joule

Coulomb

Volt

Bromine is

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Solid

Gas

Liquid

All of these

In a convex mirror, focus is.

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Under the mirror

In front of the mirror

On the mirror

Behind the mirror

James Webb telescope launched in space.

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20 December 2021

21 December 2021

22 December 2021

25 December 2021

Reduction of chromosomes takes place during.

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Mitosis

Meiotic -I

Meiotic -II

Both mitosis and meiotic -II

------------- gas is released when dead organisms are decomposed by the decomposers.

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Oxygen

Carbon dioxide

Nitrogen

Hydrogen

The pole of spherical mirror is also called.

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Principal axis

Focus

Vertex

Focal leangth

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