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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Q:

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

 

P: Children with poor phonological skills progress more poorly.
Q: The consensus concerns the causal role of phonological skills in young children’s reading progress.
R: Studies of the factors governing reading development in young children have achieved a remarkable degree of consensus over the past two decades.
S: Children who have good phonological skills, or good phonological awareness become good readers and good spellers.

 

A) QSPR B) SPQR
C) RQSP D) PQRS
 
Answer & Explanation Answer: C) RQSP

Explanation:
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Q:

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.

 

Judicious

 

A) Hasty B) Reckless
C) Irrational D) Wise
 
Answer & Explanation Answer: D) Wise

Explanation:
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Q:

Which of these rivers do not flow through Punjab?

A) Sutlej B) Ravi
C) Jhelum D) Ganga
 
Answer & Explanation Answer: D) Ganga

Explanation:
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Filed Under: Indian Geography
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Q:

Look at the underlined part of each sentence. Below each sentence are given three possible substitutions for the underlined part. If one of them (a), (b) or (c) is better than the underlined part, indicate your response on the Answer Sheet against the corresponding letter. If none of the substitutions imporves the sentence, indicate (d) as your response on the Answer Sheet.

By 8.00 in the morning he wrote four letters to his friends.

A) had written B) had been writing
C) was writing D) No improvement
 
Answer & Explanation Answer: A) had written

Explanation:

As the task was completed by 8 am the sentence is in past perfect tense, ‘had written’ will be the correct use.

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Filed Under: English
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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.

P: Most of them are combinations of hydrogen and carbon in varying proportions.
Q: Crude mineral oil comes out of the earth as a thick brown or black liquid with a strong smell.
R: It is a complex mixture of many different substances, each with it's own individual qualities.
S: Such hydrocarbons are also found in other forms such as bitumen, asphalt and natural gas.

A) QPRS B) PQRS
C) PQSR D) QRPS
 
Answer & Explanation Answer: D) QRPS

Explanation:
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Q:

The hardest part of the body is ______.

A) Bones B) Tooth Enamel
C) Skull D) Spinal Cord
 
Answer & Explanation Answer: B) Tooth Enamel

Explanation:
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Q:

Salivary amylase breaks down ______.

A) protein B) water
C) starch D) fats
 
Answer & Explanation Answer: C) starch

Explanation:
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Filed Under: Biology
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