Question
Why was it said by him?
In the following question, a sentence has been given in Active/Passive voice. Out of four alternatives suggested, select the one which best expresses the same sentence in Passive/Active voice.Solution
The rule for changing a sentence into active voice is- Subject + to be (is, am, are) + present participle + object Hence, the correct answer is- ‘Why did he say it?’ .
Microbe involved in biological oxidation of ammonium ion to nitrite ion is
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