Parts of the following sentence have been given as options. One of them may contain an error. Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.

Public agencies and nonprofit conservation groups is already working to promote conservation.

Select the most appropriate meaning of the given idiom.
 Have a whale of a time 

Select the option that will improve the underlined part of the given sentence. In case no improvement is needed, select 'No improvement required'. 

In India, processed foods becomes popular in the 20th century.

Select the most appropriate synonym of the given word.

Clandestine

Select the most appropriate meaning of the given idiom.

Back on one’s feet

The following sentence has been split into four segments. Identify the segment that contains a grammatical error.

If you plant a seed, / you will be noticed / that it takes some / time to grow.

Select the most appropriate ANTONYM of the given word.

Impure

Select the option that can be used as a one-word substitute for the given group of words.

Made in imitation so as to be passed off fraudulently as genuine