Consider the following reaction ; CH4 + 2O2 -> CO2 + 2H2O Which of the following about the reaction given above is/are correct ? 1. Carbon is oxidized. 2. Hydrogen is oxidized. 3. Hydrogen is reduced. 4. Carbon is reduced. Select the correct answer using

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Q: 90 (NDA-II/2017)
Consider the following reaction ; CH4 + 2O2 -> CO2 + 2H2O
Which of the following about the reaction given above is/are correct ?
1. Carbon is oxidized.
2. Hydrogen is oxidized.
3. Hydrogen is reduced.
4. Carbon is reduced.
Select the correct answer using the code given below :

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,2,5,2,2,3,0

keywords: 

{'ch4': [0, 0, 0, 1], 'co2': [0, 0, 4, 2], 'reaction': [1, 0, 5, 18], 'hydrogen': [0, 0, 1, 3], 'carbon': [1, 0, 4, 5], '2o2': [0, 0, 0, 1]}

In the given reaction, CH4 (methane) reacts with 2O2 (oxygen) to produce CO2 (carbon dioxide) and 2H2O (water). We need to determine whether carbon or hydrogen is oxidized or reduced in this reaction.

Option 1 states that carbon is oxidized. This is incorrect. In the reaction, carbon starts with a -4 oxidation state in CH4 and ends with a +4 oxidation state in CO2. This means that carbon is actually reduced, not oxidized.

Option 2 states that hydrogen is oxidized. This is correct. Hydrogen starts with a +1 oxidation state in CH4 and ends with a 0 oxidation state in H2O. This means that hydrogen is indeed oxidized in the reaction.

Option 3 states that hydrogen is reduced. This is incorrect. Hydrogen starts with a +1 oxidation state in CH4 and ends with a 0 oxidation state in H2O. This means that hydrogen is actually oxidized, not reduced.

Option 4 states that carbon is reduced. This is correct. As mentioned earlier, carbon starts with a -4 oxidation state in CH4 and ends with a +4 oxidation state in CO2. This indicates that carbon is reduced in