Question # 1

An electric circuit is the path along whihc.

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Electron revolve around the nucleus of an atom

Electric charge flows.

Magnetic lines of force move

Electric motors move

During respiration by the animals, whihc gas is released into the atmosphere.

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Nitrogen

Oxygen

Carbon Di oxide

Hydrogen

An event that occurs during interphase.

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Division of nuclesu

Duplication of chromosomes

Division of cytoplasm

Formation of cell wall

Organism in ecologicla communits interact with one anothe rin....... major ways.

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Two

three

Four

Five

Hubble telescope launched in space.

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1990

1991

1992

1993

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

Hubble telescope orbits the Earth at a height of about.

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550 km

560 km

500 km

600 km

Law of conservation of mass put forward in.

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1783

1784

1785

1786

--------------- is used is solar cooker.

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Convex mirror

Concave mirror

Convex lens

Concave lens

Fire works is an example of ........... reactions.

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Addition

Exothermic

Endothermic

Decomposition

How is the angle of incidence related to the angle of reflection.

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It is greater

It is smaller

It is same

None of these

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