Read each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'E'. (Ignore the errors of punctuation, if any).
Foolishly Madhu threw some water on the electric heater when it catches fire and she got a shock.
Foolishly Madhu threw
some water on the electric heater
when it catches fire
and she got a shock.
No error
Correct answer is C
when it caught fire