Master Class
10 Chemistry with this comprehensive MCQ set on Carbon and Its Compounds.
Covers carbon bonding, allotropes, atomic structure, and covalent compounds for
JKBOSE exams.
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📘 SCIENCE
SCIENCE | CARBON AND ITS COMPOUNDS-SET A
📝 Questions: 50
⏱️ Timer: 20 min
Q1. Which of the following is the molecular formula of chlorine gas?
Q2. Carbon is primarily found in all living structures because it is:
Q3. To complete its octet, oxygen shares:
Q4. The atomic number of chlorine is:
Q5. The bond formed by sharing of electrons between atoms is called:
Q6. A single covalent bond consists of:
Q7. The atomic number of hydrogen is:
Q8. The atomic number of carbon is:
Q9. The percentage of carbon present in the Earth's crust is approximately:
Q10. Carbon atoms need to gain or lose how many electrons to attain noble gas configuration?
Q11. Hydrogen atoms share electrons to attain the configuration of which noble gas?
Q12. Which allotrope of carbon is a good conductor of electricity?
Q13. The atomic number of oxygen is:
Q14. Carbon compounds do not conduct electricity mainly because they:
Q15. The formation of C⁴⁺ ion is difficult because:
Q16. A water molecule contains bonds that are:
Q17. Which element is of immense significance in both elemental and combined forms?
Q18. Carbon overcomes its bonding difficulty by:
Q19. The simplest molecule formed by sharing of electrons is:
Q20. Carbon shares electrons to achieve:
Q21. A nitrogen molecule contains:
Q22. The number of electrons in the K shell of helium is:
Q23. Bonding in carbon compounds is mainly:
Q24. Noble gas configuration means:
Q25. Most items used in daily life like food, clothes, and medicines are based on which element?
Q26. A double bond consists of:
Q27. The number of electrons shared by each oxygen atom in O₂ is:
Q28. The bond between two oxygen atoms is:
Q29. Shared electrons in covalent bonding belong to:
Q30. An example of a covalent bond is found in:
Q31. The formation of C⁴⁺ ion is difficult because:
Q32. Methane has the molecular formula:
Q33. Chlorine forms a molecule that is:
Q34. A hydrogen molecule is represented as:
Q35. Oxygen has how many electrons in its outer shell?
Q36. The product formed when a carbon compound is burnt completely is:
Q37. The number of valence electrons in carbon is:
Q38. Carbon in the Earth's crust mainly occurs in the form of:
Q39. Covalent compounds generally have:
Q40. The main reason for the diversity of carbon compounds is:
Q41. Most carbon compounds have relatively:
Q42. The percentage of carbon dioxide in the atmosphere is about:
Q43. The test used to confirm the presence of carbon dioxide is:
Q44. The atmospheric carbon is present mainly as:
Q45. A single bond is represented by:
Q46. Carbon compounds are poor conductors of electricity because they:
Q47. The valency of carbon is:
Q48. Which compound has the highest melting point among those listed?
Q49. Which compound has the lowest melting point among the given?
Q50. Diamond is an allotrope of carbon in which each carbon atom is bonded to:
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