Question # 1

Specific heat of water is how many times greater than that of dry soil?

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two times

three time

four times

five times

The centre of gravity of irregular shaped body can be found with the help of:

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Wedge

Meter rod

Plumb line

Screw gauge

Those objects which do not conduct electricity are called.

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Insulator

Semi conductor

Nil

Conduct

The value of g at a height one Earth's radius above the surface of the

Earth is:

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2 g

1/2 g

1/3 g1

1/4 g

Thermostat is a controlling switch:

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Heat

Temperature

Sound

Light

When equal opposite forces are added then the resultant force is ______________

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Double

Triple

Zero

None of these

During recent years the percentage of __________ increased considerably on earth:

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Carbon dioxide

Nitrogen

Oxygen

Methane

O maximum height the P.E of the body is:

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Zero

Maximum

Minimum

None of these

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

The formula of heat capacity is:

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mc

mc𝜟𝜽

mc𝜟Q/𝜟T

None of these

The ratio of useful output to input energy is called:

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Power

Energy

Efficiency

Horse power

if a body of a mass 'm' is moving with velocity 'v' then its K.E. is given by

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K.E. = 1/2 mv

K.E. = 1/2 mv2

K.E. = mv2

K.E. = 1/2 m2v

A body has mass 986 Kg than W = ............... .

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9860 kg

9860 N

9860 m/s2

Nil

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