VARDAAN LEARNING INSTITUTE

Q1-10. Fill in the blanks:

1. Atomic number of Carbon is __________.
2. Valency of Carbon is __________.
3. Carbon forms bonds by __________ (transferring/sharing) electrons.
4. The bond formed by sharing electron pair is called __________ bond.
5. The unique property of carbon to form bonds with other carbon atoms is called __________.
6. Carbon compounds are generally __________ (good/poor) conductors of electricity.
7. Melting points of covalent compounds are generally __________ (low/high).
8. The allotrope of carbon which is the hardest natural substance is __________.
9. The allotrope of carbon which conducts electricity is __________.
10. Buckminsterfullerene has the shape of a __________.

Q11-20. State True or False or Fill blanks:

11. Hydrocarbons containing only single bonds are called __________.
12. Hydrocarbons containing double or triple bonds are called __________ hydrocarbons.
13. General formula of Alkanes is $C_nH_{2n+2}$. __________ (True/False).
14. General formula of Alkenes is __________.
15. General formula of Alkynes is __________.
16. Saturated hydrocarbons burn with a __________ (Blue/Yellow) flame.
17. Unsaturated hydrocarbons burn with a __________ (Blue/Yellow) sooty flame.
18. Methane ($CH_4$) is the first member of __________ series.
19. Ethene has a __________ (double/triple) bond between Carbon atoms.
20. Compounds with the same molecular formula but different structures are called structural __________.

Q21-30. Identify the Functional Group present:

21. $-OH$ represents: __________ (Alcohol)
22. $-CHO$ represents: __________ (Aldehyde)
23. $>C=O$ represents: __________ (Ketone)
24. $-COOH$ represents: __________ (Carboxylic Acid)
25. $-Cl$ represents: __________ (Chloro/Halogen)
26. Suffix for Alcohol is: __________ (-ol)
27. Suffix for Aldehyde is: __________ (-al)
28. Suffix for Ketone is: __________ (-one)
29. Suffix for Carboxylic Acid is: __________ (-oic acid)
30. Functional group in Ethanol is __________.

Q31-40. One Word / One Line:

31. Series of compounds with same functional group and general formula. __________
32. Difference in molecular mass between two successive homologous members. __________ (14u).
33. Reaction of burning a substance in oxygen. __________
34. Reaction in which hydrogen is added to unsaturated hydrocarbon. __________
35. Substance used to convert alcohol to carboxylic acid. __________ (Oxidizing Agent).
36. Common name of Ethanoic Acid. __________ (Acetic Acid).
37. Common name of Ethanol. __________ (Ethyl Alcohol).
38. A hydrophobic part of soap dissolves in __________. (Oil/Water).
39. A hydrophilic part of soap dissolves in __________. (Oil/Water).
40. Reaction between Acid and Alcohol to form Ester. __________

Q41-50. Write Formulae for:

41. Methane: __________
42. Ethane: __________
43. Propane: __________
44. Butane: __________
45. Ethene: __________
46. Ethyne: __________
47. Ethanol: __________
48. Ethanoic Acid: __________
49. Chloromethane: __________
50. Benzene: __________