Questions

Q:

The spring constant of a spring depends on its

A) length only B) material only
C) length and its diameter D) thickness, its diameter and its material
 
Answer & Explanation Answer: D) thickness, its diameter and its material

Explanation:

In dealing with a coil spring the spring constant will depend on the stiffness of the spring material, the thicknessof the wire from which the spring is wound and, diameterof the turns of the coil, the number of turns per unit length and the overall length of the spring.

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Filed Under: Physics
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Q:

The gas usually filled in the electric bulb is

A) Hydrogen B) Oxygen
C) Nitrogen D) Carbon dioxide
 
Answer & Explanation Answer: C) Nitrogen

Explanation:

The gas usually filled in the electric bulb is Nitrogen.

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Filed Under: General Science
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Q:

Air temperatures are effected by slope and orientation as slopes facing into the Sun will be 

A) Warmer than those facing away B) Colder than those facing away
C) Neither warmer nor colder than those facing away D) None of these
 
Answer & Explanation Answer: A) Warmer than those facing away

Explanation:
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Q:

Who wrote the line: ' A thing of beauty is a joy for ever '

A) P.B.Shelley B) William Wordsworth
C) John Keats D) Robert Browning
 
Answer & Explanation Answer: C) John Keats

Explanation:
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Filed Under: Books and Authors

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Q:

In general, which is the cause of a land breeze?

A) Pressure B) Heat
C) Temperature D) None of the above
 
Answer & Explanation Answer: C) Temperature

Explanation:

The land breeze is a coastal breeze at night blowing from the land to the ocean. It is caused by the difference in the rates of cooling of the land and of the ocean. Once again, the bigger the difference in temperature between the two, the stronger the wind.

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Q:

Magnetic domains normally occur in

A) copper B) silver
C) iron D) All of the above
 
Answer & Explanation Answer: C) iron

Explanation:

A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction.

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Q:

The technique of DNA fingerprinting in human was developed for first time by _________

A) Lalji Singh B) Alec Jeffreys
C) R. Ericson D) J. Black
 
Answer & Explanation Answer: B) Alec Jeffreys

Explanation:
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Filed Under: Biology

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Q:

Which statement describes decomposers?

A) Decomposers are insignificant organisms in the ecosystem and can be absent in some ecosystems. B) Decomposers can produce their own source of energy and can sometimes act as primary producers.
C) Decomposers are those organisms that recycle matter in the ecosystem.. D) All the above
 
Answer & Explanation Answer: C) Decomposers are those organisms that recycle matter in the ecosystem..

Explanation:

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition.

 

The statement "Decomposers are those organisms that recycle matter in the ecosystem" describes decomposers.

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Filed Under: Biology
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