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Q:

What always works with something in its eye?

A) Bottle B) Needle
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) Needle

Explanation:

A needle has an eye through which we keep a thread and use for stitching clothes.

 

what_always_works_with_something_in_its_eye1535691652.jpg image

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Q:

Which is the most polluted city in the world, according to Air Quality Index 2018?

A) Sydney B) New Delhi
C) Mumbai D) Islamabad
 
Answer & Explanation Answer: B) New Delhi

Explanation:

New Delhi is the most polluted city in the world, according to Air Quality Index 2018.

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Q:

The study of brain is called

A) Neurology B) Nephrology
C) Phrenology D) Pathology
 
Answer & Explanation Answer: C) Phrenology

Explanation:

The study of brain is called Phrenology.

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Q:

An ideal gas cannot be

A) liquified B) solidified
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) liquified

Explanation:

An ideal gas cannot be liquified because forces between the molecules are negligible.

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Filed Under: Physics
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Q:

A  photon  of  X-ray  has  energy  of  1  keV.  A photon of visible radiation has energy of 3 eV.  In  this  context,  which  one  of  the following statements is not correct?

A) The wavelength of X-ray photon is less than the wavelength of visible radiation photon. B) Both    the    photons    have    different energies.
C) The  speeds  of  both  the  photons  in vacuum are different D) The   frequency   of   X-ray   photon   is higher  than  the  frequency  of  visible radiation photon.
 
Answer & Explanation Answer: C) The  speeds  of  both  the  photons  in vacuum are different

Explanation:

The speed of all the electromagnetic radiation are always   same   and   equal   to   the numerical value 3 x 10^8m/sec.

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Filed Under: Physics
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Q:

_______ optical data storage is a technology where data is stored in multiple layers in the optical disc.

A) 3D B) 30D
C) 300D D) 3000D
 
Answer & Explanation Answer: A) 3D

Explanation:
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Filed Under: Physics
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Q:

Which statement best describes perigee?

A) The closet point in the Moon's orbit to Earth B) The farthest point in the Moon's orbit to Earth
C) The closest point in Earth's orbit of the Sun D) The Sun's orbit that is closest to the Moon
 
Answer & Explanation Answer: A) The closet point in the Moon's orbit to Earth

Explanation:

The closet point in the Moon's orbit to Earth is called perigee whereas the farthest point in the Moon's orbit to Earth is called apogee.

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Q:

Mediterranean  climate is ideal for growing

A) wheat and barley B) tea and coffee
C) Surgarcane and beet D) orange and lemons
 
Answer & Explanation Answer: D) orange and lemons

Explanation:

The hot dry summers and cool wet winters are especially suited for citrus fruits and therefore these lands are some times reffered to as the 'world's orchard land' .

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Filed Under: World Geography

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