Carbon Compounds (Class 10 Science)
Carbon forms the backbone of all organic compounds, which include hydrocarbons, alcohols, aldehydes, and carboxylic acids. Understanding carbon chemistry i
TL;DR: Carbon forms the backbone of all organic compounds, which include hydrocarbons, alcohols, aldehydes, and carboxylic acids. Understanding carbon chemis…
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Carbon forms the backbone of all organic compounds, which include hydrocarbons, alcohols, aldehydes, and carboxylic acids. Understanding carbon chemistry i
Carbon Compounds MCQs with Answers & Explanations
Q1. What is the general formula for alkanes?
- CnH2n+2 ✓ (correct)
- CnH2n
- CnHn
- CnH2n-2
Explanation: The general formula for saturated hydrocarbons (alkanes) is CnH2n+2, where n is the number of carbon atoms.
Q2. Methane (CH4) is classified as:
- An alkyne
- An alkane ✓ (correct)
- An alkene
- An alcohol
Explanation: Methane is the simplest alkane with a single carbon-hydrogen bond and the formula CH4.
Q3. Which of the following is an unsaturated hydrocarbon?
- Methane
- Propane
- Ethene ✓ (correct)
- Ethane
Explanation: Ethene (C2H4) is an unsaturated hydrocarbon containing a carbon-carbon double bond.
Q4. The functional group in alcohols is:
- -CHO
- -CO-
- -COOH
- -OH ✓ (correct)
Explanation: The hydroxyl group (-OH) is the functional group in alcohols, found in compounds like ethanol.
Q5. Carboxylic acids contain the functional group:
- -COOH ✓ (correct)
- -NH2
- -CHO
- -OH
Explanation: The carboxyl group (-COOH) is characteristic of carboxylic acids and is responsible for their acidic properties.
Q6. Which compound can be used as a fuel?
- Acetic acid
- Both ethanol and benzene ✓ (correct)
- Ethanol
- Benzene
Explanation: Both ethanol and benzene can be used as fuels, though ethanol is more commonly used as a biofuel.
Q7. The chemical formula for acetic acid is:
- C2H5OH
- HCOOH
- CH3COOH ✓ (correct)
- CH3OH
Explanation: Acetic acid (CH3COOH) is the main component of vinegar and contains a carboxyl group.
Q8. The reaction between an alcohol and a carboxylic acid produces:
- Water
- A ketone
- An aldehyde
- An ester ✓ (correct)
Explanation: Esterification reaction between alcohols and carboxylic acids produces esters and water.
Q9. Which of the following is the structure of benzene?
- Hexagonal ring with alternating double bonds ✓ (correct)
- Straight chain with 6 carbons
- Open chain with 6 carbons and one double bond
- Three double-bonded carbons
Explanation: Benzene is a hexagonal aromatic ring (C6H6) with delocalized pi electrons providing stability.
Q10. The addition of hydrogen to unsaturated hydrocarbons is called:
- Esterification
- Hydrogenation ✓ (correct)
- Oxidation
- Dehydration
Explanation: Hydrogenation adds hydrogen to unsaturated compounds (alkenes and alkynes), converting them to saturated compounds.
Frequently Asked Questions
What is the significance of covalent bonding in carbon compounds?
Carbon forms strong covalent bonds with other carbon atoms and elements, allowing for the formation of diverse structures from simple molecules to complex polymers. This versatility is why carbon is the basis of all organic chemistry.
How are isomers different from each other?
Isomers have the same molecular formula but different structural arrangements, which results in different physical and chemical properties. For example, butane and isobutane both have the formula C4H10 but different structures.
More Class 10 Science MCQs
- Light Reflection and Refraction
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
🤖 Stuck on any of these? Ask Syllab's free AI Tutor to explain step by step →