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Q:

HEPA filters are used to remove microbes from

A) human tissues B) air
C) medical instruments D) liquids
 
Answer & Explanation Answer: B) air

Explanation:

High-efficiency particulate air (HEPA), also known as high-efficiency particulate absorbing and high-efficiency particulate arrestance, is an efficiency standard of air filter.

hepa-filters1596516018.png image

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Q:

The pitch of a sound depends on its ____.

A) frequency B) wavelength
C) amplitude D) timbre
 
Answer & Explanation Answer: A) frequency

Explanation:
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Q:

Which of the following glows with special colour depending on the nature of gas in the fluorescent tube?

A) Plasma B) Hydrogen
C) Helium D) Bose-Einstein condensate
 
Answer & Explanation Answer: A) Plasma

Explanation:
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Q:

What is the unit of the physical quantity "Capacitance"?

A) weber B) farad
C) tesla D) ohm
 
Answer & Explanation Answer: B) farad

Explanation:
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Q:

Friction is caused by the ______________ on the two surfaces in contact.

A) irregularities B) smoothness
C) densities D) gaps
 
Answer & Explanation Answer: A) irregularities

Explanation:
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Q:

Which among the following determines the pitch of a sound?

A) Amplitude B) Frequency
C) Loudness D) Wavelength
 
Answer & Explanation Answer: B) Frequency

Explanation:
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Q:

An Odometer is an instrument used to measure ____ in automobiles.

A) direction B) distance
C) odour D) speed
 
Answer & Explanation Answer: B) distance

Explanation:
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Q:

Rate of work done is _______.

A) Energy B) Power
C) Momentum D) Impulse
 
Answer & Explanation Answer: B) Power

Explanation:
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