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:

In which year was the First Five Year Plan launched in India?

A) 1921 B) 1931
C) 1941 D) 1951
 
Answer & Explanation Answer: D) 1951

Explanation:
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Filed Under: Indian Politics
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Q:

The man who presented India’s first-ever Budget ?

A) C Rajgopalachari B) Jawaharlal Nehru
C) Motilal Nehru D) James Wilson
 
Answer & Explanation Answer: D) James Wilson

Explanation:
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Q:

In the given question, a part of the sentence is printed in bold. Below the sentence, three alternatives to the bold part are given which may help improve the sentence. Choose the option that reflects the correct use of the phrase in the context of the sentence. In case the given sentence is correct, your answer is (E) i.e. No correction required. Living in the heart of New York city is certainly like a far cry from living in the rural countryside. (i) heart of New York city is certainly a far cry from (ii) heart of New York city is a far cry than (iii) heart of the New York city is certainly ruing

A) Only (i)  B) Only (ii)
C) Only (iii) D) Both (ii) and (iii)
 
Answer & Explanation Answer: A) Only (i) 

Explanation:
The part of the sentence that is most important in this sentence is ‘a far cry.’ It means ‘vastly different from.’ But here this phrase has not been used in the correct way except option 1.
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Filed Under: English

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Q:

The given sentences, when properly sequenced, form a coherent paragraph. Each sentence is labelled with a letter. Choose the most logical order of the sentences from among the five given choices to construct a coherent paragraph keeping 1 as the first statement.

1) You’d think the Indian economy had returned to rosy health.

A) Prime Minister Narendra Modi’s decision just over a year ago to withdraw 86 per cent of the currency in circulation, and the poorly- planned rollout in the middle of 2017 of a new goods-and-services tax.

B) The Purchasing Managers’ Index expanded the fastest it has in five years. At least one international rating agency has upgraded India’s credit rating.

C) It seems to have recovered from two enormous disruptions.

D) Exports are no longer declining, as they had for several quarters; indeed, for the last month that data is available, they rose 30 per cent.

A) ABDC B) ACBD
C) CADB D) BCDA
 
Answer & Explanation Answer: C) CADB

Explanation:

The correct sequence is CADB.

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Filed Under: English
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Q:

If Sinθ = √3/2 and 0°<θ<90°, then the value of tan(θ-15°) is

A) 1 B) 3
C) 31 D) 2
 
Answer & Explanation Answer: A) 1

Explanation:
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Q:

Who discovered electron?

A) E. Goldstien B) J. J. Thomson
C) Ernest Rutherford D) J. Chadwick
 
Answer & Explanation Answer: B) J. J. Thomson

Explanation:
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Filed Under: Inventions
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Q:

Who invented Antibiotics?

A) Joseph Lister B) William Harvey
C) Robert Knock D) Alexander Fleming
 
Answer & Explanation Answer: D) Alexander Fleming

Explanation:
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Filed Under: Inventions
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