alleryStart learning →The functional group –COOH represents:
- ketone group
- carboxylic acid
- aldehyde group
- alcohol group
Show answer and solution
Correct answer: B. carboxylic acid
–COOH is the carboxylic-acid group (e.g., CH₃COOH = ethanoic acid / acetic acid).
Indian Navy SSR (Sailor) Carbon and its Compounds — practice questions
Explore 4 free Carbon and its Compounds questions in Indian Navy SSR (Sailor) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.
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The functional group –COOH represents:Read the answer and worked solution →CLASS10 · Chemistry · Carbon Compounds — Functional GroupRead the answer and worked solution →How many isomers exist for the molecular formula C4H10?Read the answer and worked solution →The soap molecule has aRead the answer and worked solution →
Worked practice questions
CLASS10 · Chemistry · Carbon Compounds — Functional Group
Read exercise and reference answers
- Matching pairs
- A
- Alcohol
- B
- −OH (hydroxyl)
- A
- Aldehyde
- B
- −CHO
- A
- Ketone
- B
- >C=O
- A
- Carboxylic acid
- B
- −COOH
- A
- Ether
- B
- −O−
- A
- Amine
- B
- −NH₂
- Instructions
- Match each functional group to its name.
How many isomers exist for the molecular formula C4H10?
- One
- Three
- Two
- Four
Show answer and solution
Correct answer: C. Two
1. C4H10 corresponds to butane with the alkane formula CnH(2n+2).
2. The straight-chain version is n-butane (CH3-CH2-CH2-CH3).
3. A branched version has a methyl on the central carbon, called isobutane.
4. Both share the same molecular formula but differ in structure.
5. So C4H10 has exactly two structural isomers.
_Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_
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