Questions

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:

What is the unit of the physical quantity "Young's modulus"?

A) newton B) erg
C) joule D) pascal
 
Answer & Explanation Answer: D) pascal

Explanation:
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Filed Under: Physics
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2 1878
Q:

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Direct/Indirect speech.

"Please don't cry" he said.

A) He begged that I should not cry. B) He begged me not to cry.
C) He said to please him and not cry. D) He told me to not to cry.
 
Answer & Explanation Answer: B) He begged me not to cry.

Explanation:
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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.

1. Four famous Sikh shrines in Delhi will go green

2. by employing solar energy

3. to meet its daily power needs from April.

4. No error

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:
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Q:

Calcium salts used as fertilizer is:

A) Calcium Carbide B) Calcium Carbonate
C) Calcium Cyanide D) Calcium Sulphate
 
Answer & Explanation Answer: D) Calcium Sulphate

Explanation:
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Filed Under: Chemistry

3 1877
Q:

In the following question, a word has been written in four different ways out of which only one is correctly spelt. Select the correctly spelt word.

A) Glamerous B) Glamrous
C) Glamorous D) Gleamorous
 
Answer & Explanation Answer: C) Glamorous

Explanation:
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Q:

The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

I hear the sound

X-his tool raised
Y-of the blow while I see
Z-above his head

A) XZY B) XYZ
C) YXZ D) ZYX
 
Answer & Explanation Answer: C) YXZ

Explanation:
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Q:

In the following question, out of the given four alternatives, select the alternative which best expresses the meaning of the Idiom/Phrase.

 

No love lost

A) Complimentary B) A seer’s last creation
C) Self satisfied D) Intense dislike
 
Answer & Explanation Answer: D) Intense dislike

Explanation:
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