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.
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