Question # 1

The number of perpendicular components of a force are

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1

2

3

4

Cream separater works on:

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Centrifuge principle

Centripetal force

Both

None

In atoms and molecules are packed closely together:

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Solids

Gas

Liquid

Plasma

The freezing point of Mercury is:

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49 ^oC

-49^oC

39^oC

-39^oC

Which instrument is most suitable to measure the internal diameter of a test tube.

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Metre rule

Vernier Callipers

Measuring tape

Screw gauge

The mathematical formula of thermal conductivity is

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k =Q/t x L/A (T1 - T2)

k =Q/t x L/A (T1 + T2)

k =t/Q x L/A (T1 - T2)

k =2Q/t x L/A (T1 + T2)

The orbital speed of a low orbit satellite is:

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Zero

8 ms^-1

800 ms^-1

8000 ms^-1

The symbol of sigma is :

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Σ

m

=

$

The energy stored in a dam is:

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Electric energy

Potential energy

Kinetic energy

Thermal energy

Weight is measured by:

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Spring balnce

Measuring cylinder

Physical balnce

None of these

Clinical thermometer is used by:

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Astronomers

Doctors

Scientist

Chemists

In a dam the water energy is called:

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Heat energy

Electrical energy

G.P.E

Mechanical enrgy

According to Archimedes, upthrust is equal to

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Weight of displaced liquid

Volume of displaced liquid

Mass of displaced liquid

None of these

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