Questions

Q:

Evaporation of water from leaves of a plant is called

A) Transpiration B) Respiration
C) Perspiration D) Evaporation
 
Answer & Explanation Answer: A) Transpiration

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Q:

Who is the author of "The Secret Of The Nagas (Shiva Trilogy­2)"?

A) Amish Tripathi B) Durjoy Datta
C) Keshav Aneel D) Savi Sharma
 
Answer & Explanation Answer: A) Amish Tripathi

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Q:

Sariska and Ranthambore are the reserves for which of the following

A) Lion B) Deer
C) Tiger D) Bear
 
Answer & Explanation Answer: C) Tiger

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Q:

Indus Valley Civilization was a __________ age civilization.

A) Silver B) Tin
C) Gold D) Bronze
 
Answer & Explanation Answer: D) Bronze

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Q:

When was the first cricket test match played?

A) 1677 B) 1777
C) 1877 D) 1977
 
Answer & Explanation Answer: C) 1877

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Q:

Which one of the following statements is not correct?

A) The response of the ear to sound of increasing intensity is approximately logarithmic. B) The sensitivity of the human ear does not vary with the frequency of the sound.
C) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave. D) Longitudinal waves can travel in all media-solids, liquids and gases.
 
Answer & Explanation Answer: B) The sensitivity of the human ear does not vary with the frequency of the sound.

Explanation:

The human ear can respond to minute pressure variations inthe air if they are in the audible frequency range, roughly 20 Hz -20 kHz. In fact, tests conducted show an increased sensitivity in the 3000 Hz range which is the optimal amplification frequency in the human ear. So, the sensitivity of the human ear varies with the frequency of the sound.

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Q:

Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

A) -4.33 diopters B) 12.33 diopters
C) -12.33 diopters D) 4.33 diopters
 
Answer & Explanation Answer: B) 12.33 diopters

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Q:

The absolute refractive index of air is

A) 1.03 B) 1.00003
C) 1.003 D) 1.0003
 
Answer & Explanation Answer: D) 1.0003

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