263
Q:

The working principle of a washing machine is

A) reverse osmosis B) diffusion
C) centrifugation D) dialysis

Answer:   C) centrifugation



Explanation:

The working principle of a washing machine is centrifugation.

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Q:

Which among the following temperature scale is based upon absolute zero?

A) Rankine B) Celsius
C) Fahrenheit D) Kelvin
 
Answer & Explanation Answer: D) Kelvin

Explanation:

Kelvin temperature scale is the temperature scale that is based upon absolute zero.

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0 1
Q:

What type of electromagnetic radiation is used in the remote control of a television?

A) Ultraviolet B) Visible
C) Infrared D) None of the above
 
Answer & Explanation Answer: C) Infrared

Explanation:
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0 9
Q:

Gear finishing operation is called

A) Burnishing B) Hobbing
C) Shaping D) Milling
 
Answer & Explanation Answer: A) Burnishing

Explanation:

Gear finishing operation is called Burnishing.

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Q:

The taper on the lathe spindle is

A) 1 in 10 B) 1 in 20
C) 1 in 15 D) 1 in 25
 
Answer & Explanation Answer: B) 1 in 20

Explanation:
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0 16
Q:

The term photon refers to

A) light ray B) sub atomic particle
C) radiation D) None of the above
 
Answer & Explanation Answer: B) sub atomic particle

Explanation:

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force. The photon has zero rest mass and always moves at the speed of light within a vacuum.

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Q:

Which determines the frequency of a sound wave?

A) Amplitude B) Speed
C) Source D) Medium
 
Answer & Explanation Answer: A) Amplitude

Explanation:

The frequency of a sound wave is determined by the amplitude of the wave. As amplitude of the wave is high the frequency of the wave will also be high.

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2 22
Q:

Water is more dense than cooking oil.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Yes, the given statement that water is more dense than cooking oil is TRUE as water more denser than oil it is sinked when it is poured in oil.

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1 65
Q:

After removing two electrons from helium atom it become?

A) UV rays B) Alpha particle
C) Gama particle D) X rays
 
Answer & Explanation Answer: B) Alpha particle

Explanation:
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