Question # 1

Organic material and their residues are called:

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Biomass

Nuclear waste

Smog

Garbage

Themethod of production of electricity that does not produce pollution is.

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Hydroelectirc power

Thermal power

Nuclear power

Burning of biogas

The device used for turning a circuit ON or OFF is.

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Switch

Fuse

Circuit breaker

Earth wire

"SPACE Suit" secure astronauts from temperature ragne.............. in space.

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200 ^oC to - 110 ^o

250^o to - 185^o

150^o to - 185 ^oC

none

Total production capacity of Karachi nuclear power plant:

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137 megawatt

173 megawatt

100 megawatt

110 megawatt

The energy produced by the breakdown of chemical bond between atoms:

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Light energy

chemical energy

electrical energy

kinetic energy

The solar energy falling on the atmosphere of Earth is almost:

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1.2 Kilowatt per square meter

1.4 kilowatt per square meter

1.6 kilowatt per square meter

1.8 kilowatt per square meter

Which element is used to make LED?

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Aluminum

Calcium

sodium

Arsenic

The Si unit of power is;

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Joule

Ohm

Watt

Ampere

A device which does not allow current to pass through it overt a certain limit:

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Switch

circuit breaker

Resistor

Fuse

The potential of the neutral wire is.

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Zero

+220 volts

220 volts

Changing

Breaking of the heavy nucleus of an atom is called:

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Nuclear fission

Nuclear fusion

conservation

pollution

Resistance ' R" is equal to.

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I

V

V/I

I/V

Operation " 2+3" in computer performed by.

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CU

CPU

ALU

None of these

The light of laser is:

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monochromatic

dichromatic

trichromatic

Tetrachrmatic

America setn two space probes in.

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1979

1920

1976

1957

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