Question # 1

------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.

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Waisting of energy

Destroy fo energy

Transfer of energy

Produce of energy

As we go up in the air.

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Atmospheric pressure increases

Atmospheric pressur edecreases

Atmospheric pressur edoes not change

Atmosphericpressur ebecomes zero at the height of 1 km

The SI unit of voltage is.

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Watt

Joule

Coulomb

Volt

The cells which are produced as a result of cell division are called.

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Parent

Primary

Secondary

Daughter

Unit of Resistance is.

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Ampere

Volt

Ohm

Farad

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

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Food web

Ecologicla pyramid

Tropicla level

None of these

The unit of electric power is

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Ampere

Joule

Volt

Watt

Surface temperature of the Sun is

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3000 oC

6000 oC

15000 oC

1,500,000 oC

The poisonous and harmsful substances which make the air unfavorable for life are called.

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Solid pollutant

Air pollutant

Water pollutant

Acid Rain

The reaction between calcium oxide and carbon dioxide to form calcium carbonate is an example of.

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Decomposition reaction

Addition reaction

Acid-Base reaction

Neutralizaion reaction

Scientific study of space by using especially developed technology is called.

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Space invention

Space exploration

Space searching

Space developing

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