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Q:

‘Plum  Pudding  Model’  for  an  atom  was proposed by

A) Antoine Lavoisier B) Robert Boyle
C) Ernest Rutherford D) J. J. Thomson
 
Answer & Explanation Answer: D) J. J. Thomson

Explanation:

The   first   model   of   atom   was proposed   by   J.   J.   Thomson   in 1898.According  to  this  model,  the positive   charge   of   the   atom   is uniformly   distributed   throughout the  volume  of  the  atom  and  the negatively  charged  electrons  are embedded  in  it  like  seeds  in  a watermelon.    This    model    was picturesquely  called  plum  pudding model of the atom

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Filed Under: Chemistry
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Q:

In the reaction H2O2 + Cl2 -----> 2HCl + O2, H2O2 acts as

A) an acid B) an oxidising agent
C) a reducing agent D) a base
 
Answer & Explanation Answer: C) a reducing agent

Explanation:
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Filed Under: Chemistry
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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.
Learn by heart

A) To memorize something B) Love something terribly
C) Learn a lesson by making a mistake D) Learn to control or hide your true feelings
 
Answer & Explanation Answer: A) To memorize something

Explanation:
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Filed Under: English
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Q:

The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.

Most children remain______school between the ages of seven and ten.

A) in B) under
C) at D) inside
 
Answer & Explanation Answer: C) at

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Filed Under: English
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Q:

A sentence/a part of the sentence is underlined. Four alternatives are given to the underlined part which will improve the sentence. Choose the correct alternative and click the button corresponding to it. In case no improvement is needed, click the button corresponding to “No improvement”.

Can you be able to please tone down your excitement?

A) Can you please be able to tone down your excitement? B) Are you able to please tone down your excitement?
C) Can you please tone down your excitement? D) No improvement
 
Answer & Explanation Answer: C) Can you please tone down your excitement?

Explanation:
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Filed Under: English
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Q:

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

A) 3√5 B) 3√5 – 7
C) 3√5 + 7 D) 8
 
Answer & Explanation Answer: B) 3√5 – 7

Explanation:
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Filed Under: Quantitative Aptitude - Arithmetic Ability
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Q:

Sewing machine was invented by

A) Alfred P. Southwick B) Isaac Singer
C) Murasaki Shikibu D) Hanaoka Seishu
 
Answer & Explanation Answer: B) Isaac Singer

Explanation:
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Filed Under: Inventions
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Q:

The prestigious 'Jawaharlal Nehru Award for International Understanding' is instituted by

A) National Centre for Art and Culture B) Department of Youth and Sports
C) Nehru Memorial Museum D) Indian Council for Cultural Relations
 
Answer & Explanation Answer: D) Indian Council for Cultural Relations

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Filed Under: Honours and Awards

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