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This question asked in [CBSE Delhi Set - I, 2016]

The following paragraph has not been edited. There is one error in each line against which a blank  has been given. Write the error and the correction in your answer sheet against the correct blank  number as given in the example. Remember to underline the word that you have supplied.  

Error   Correction 

Research is an detailed study of a    e.g.       an             a  

subject undertaking on a systematic   1.    ___   ___ 

basis in order to increase a Stock of   2.    ___   ___ 

Knowledge, including Knowledge for man,   3.    ___   ___ 

Culture and Society that the use of this Stock   4.   ___   ___ 

of knowledge to devise new applications.

1.(A) undertake (B) undertakes (C) undertaken (D) undertook 

2.(A) an (B) some (C) the (D) only 

3.(A) in (B) of (C) near (D) on 

4.(A) and (B) both (C) as (D) whether



  Error  Correction 
1 undertaking (C) undertaken
2 a (C) the
3 for (B) of
4 that (A) and



  1. Undertaking- Ing’ is added at the end of a verb when we talk about it in continuous tense and the passage is not in continuous tense. So, the correct word is “undertaken”.
  2. A- “A”  is used when we are talking about things in general and not when we are talking about a specific person/thing. So, the correct word is “the”.
  3. For- “For” is because and you do not increase knowledge because of the man. So, the correct word is “of”.
  4. That- “That” is not used to connect two sentences or to tell about two things occurring simultaneously. So, the correct word is “and”.

Thus, the correct paragraph is

Research is a  detailed study of a

subject undertaken  on a systematic

basis in order to increase the Stock of

Knowledge, including Knowledge of man,

Culture and Society and the use of this Stock 

of knowledge to devise new applications.

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo