What is the chemical formula for Marsh gas?

examrobotsa's picture

Submitted by examrobotsa on

Q: 94 (CDS-II/2006)
What is the chemical formula for Marsh gas?

question_subject: 

Science

question_exam: 

CDS-II

stats: 

0,65,63,22,65,11,30

keywords: 

{'chemical formula': [0, 0, 1, 3], 'marsh gas': [0, 0, 1, 0], 'co2': [0, 0, 4, 2], 'c2h6': [0, 0, 2, 0], 'ch4': [0, 0, 0, 1], 'nh3': [0, 0, 2, 5], 'no2': [0, 0, 1, 3]}

The chemical formula for Marsh gas is CH4. This means that one molecule of Marsh gas contains one carbon (C) atom and four hydrogen (H) atoms.

Let`s analyze each of the given options to understand why option 2 is the correct answer.

Option 1: C2H6 - This is the chemical formula for ethane, not Marsh gas. Ethane consists of two carbon atoms and six hydrogen atoms.

Option 3: NH3 - This is the chemical formula for ammonia, which consists of one nitrogen (N) atom and three hydrogen atoms. It is not the correct formula for Marsh gas.

Option 4: CO2 + NO2 - This is a combination of two different compounds. CO2 represents carbon dioxide, while NO2 represents nitrogen dioxide. It is not the formula for Marsh gas.

Therefore, the correct answer is option 2, CH4, which represents the chemical formula for Marsh gas.