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Learn SSC CGL MCQs with answers [Page 1 of Department 134]

M

Mahesh Chandra • 6.28K Points
Tutor III

3) The velocity of sound in moist air is more than in dry air because the moist air has

(A) Less density than dry air.
(B) Less pressure than dry air.
(C) More pressure than dry air.
(D) More density than dry air.
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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M

Mahesh Chandra • 6.28K Points
Tutor III

5) Velocity of sound in air does not change with the change of

(A) Temperature of air
(B) Pressure of air
(C) Moisture content in air
(D) Wind in the direction of propagation of sound
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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M

Mahesh Chandra • 6.28K Points
Tutor III

6) The propagation of sound waves in a gas involves

(A) Adiabatic compression and rarefaction
(B) Isothermal compression and rarefaction
(C) Isochoric compression and rarefaction
(D) Isobaric compression and rarefaction
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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M

Mahesh Chandra • 6.28K Points
Tutor III

7) When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as 

(A) Doppler effect
(B) Beats
(C) Resonance
(D) Echo
Correct Answer - Option (B)

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S

Sandeep • 6.42K Points
Tutor III

9) The 'Grand Trunk Road' connects ________ 

(A) Kolkata and Mumbai
(B) Delhi and Chennai
(C) Kolkata and Amritsar
(D) Tirupati and Ludhiana
Correct Answer - Option (C)

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S

Sandeep • 6.42K Points
Tutor III

10) Arrange these places in decreasing order of their atmospheric pressure on their ground surface:
1. Shimla
2. Gangtok
3. Mumbai
4. Delhi

(A) 3, 4, 1, 2
(B) 4, 3, 2, 1
(C) 3, 1, 4, 2
(D) 2, 4, 1, 3
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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