Chapter 11: Carbon and its Compounds — Online MCQ Test
SCIENCE · CLASS 10th · Tamil Nadu State Board
Practice Chapter 11: Carbon and its Compounds with a free chapter-wise online MCQ test.
This chapter covers: This chapter covers carbon bonding allotropy homologous series and functional groups. Students study ethanol ethanoic acid chemical properties IUPAC nomenclature and soap detergent....
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 11: Carbon and its Compounds — Important Questions & Answers
Which of the following is an allotrope of carbon?
- A. Diamond
- B. Iron
- C. Copper
- D. Oxygen
Answer: A. Diamond
Diamond, graphite, and fullerene are the well-known allotropes of carbon.
Diamond, graphite, and fullerene are the well-known allotropes of carbon.
What is the general formula for the homologous series of alkanes?
- A. CnH2n
- B. CnH2n-2
- C. CnH2n+2
- D. CnH2n+1
Answer: C. CnH2n+2
Alkanes are saturated hydrocarbons with the general formula CnH2n+2.
Alkanes are saturated hydrocarbons with the general formula CnH2n+2.
Which of the following describes the bonding in carbon compounds?
- A. Ionic bonds formed by electron transfer
- B. Covalent bonds formed by electron sharing
- C. Metallic bonds due to electron sea
- D. Hydrogen bonds only
Answer: B. Covalent bonds formed by electron sharing
Carbon atoms share electrons with other atoms to complete their octet, forming strong covalent bonds.
Carbon atoms share electrons with other atoms to complete their octet, forming strong covalent bonds.
How does the soap molecule effectively clean clothes?
- A. By reacting chemically with the dirt
- B. By dissolving in the water only
- C. By forming micelle structures where the non-polar end traps grease
- D. By neutralizing the water acidity
Answer: C. By forming micelle structures where the non-polar end traps grease
Soap molecules form micelles where the hydrophobic tail captures grease, allowing it to be washed away.
Soap molecules form micelles where the hydrophobic tail captures grease, allowing it to be washed away.
Why do carbon compounds generally have low melting and boiling points?
- A. They have strong ionic bonds
- B. They have very weak intermolecular forces of attraction
- C. They are highly reactive
- D. They have covalent bonds within molecules but weak forces between molecules
Answer: D. They have covalent bonds within molecules but weak forces between molecules
While covalent bonds are strong, the intermolecular forces between individual molecules are weak.
While covalent bonds are strong, the intermolecular forces between individual molecules are weak.