Q: 19 (NDA-I/2012)


Which of the following statements regarding oxidation and reduction are correct?
1. In oxidation, loss of electron takes place whereas in reduction, gain of electron takes place.
2. In oxidation, gain of electron takes place whereas in reduction, loss of electron takes place.
3. Oxidizing agent decreases the oxidation number but reducing agent increases the oxidation number.
4. Oxidizing agent increases the oxidation number but reducing agent reduces the oxidation number.
Select the correct answer using the code given below ; Code:
question_subject: 
Science
question_year: 
2012
question_exam: 
NDA-I
stats: 
0,168,320,152,144,24,168