Question # 1

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

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Addition

Exothermic

Endothermic

Decomposition

The SI unit of voltage is.

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Watt

Joule

Coulomb

Volt

-------------------- is/are used to coat the backside of the mirror.

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Silver

Copper

Aluminium

Silver and Aluminium

Surface temperature of the Sun is

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3000 oC

6000 oC

15000 oC

1,500,000 oC

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

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Food web

Ecologicla pyramid

Tropicla level

None of these

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

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Protein

Vaccine

Insuline

Pancreas

During reproduction, living things pass their characteristics to their.

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Parents

Grand parents

Off spring

Brother and sister

Mg belong to the period of the Periodic Table.

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1st

2nd

3rd

4th

Toothpaste is a ........ paste like material used for cleaning and polisheing teeth.

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Liquid

Gas

Semi -Solid

Solid

Mass number of oxygen is

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6

16

26

36

Bright stars may appear dim stars because they are.

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Old star

New star

Far away from Earth

Close to the Earth

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