1. Catenation
2. Tetravalency (4)
3. True
4. False (Graphite)
5. Covalent
6. Isomers
7. Isomers of Butane
8. Homologous Series
9. $-CH_2-$
10. 14 (CH$_2$)
11. Alcohol ($-OH$)
12. Aldehyde ($-CHO$)
13. Ketone ($\gt C=O$)
14. Carboxylic ($-COOH$)
15. Halogen ($-Cl$, $-Br$)
16. $CH_4$: Methane
17. $C_2H_6$: Ethane
18. $C_2H_4$: Ethene
19. $C_2H_2$: Ethyne (Acetylene)
20. $CH_3OH$: Methanol
21. $C_2H_5OH$: Ethanol
22. $CH_3COOH$: Ethanoic Acid (Acetic Acid)
23. $HCOOH$: Methanoic Acid (Formic Acid)
24. $CH_3CHO$: Ethanal (Acetaldehyde)
25. $CH_3COCH_3$: Propanone (Acetone)
26. Single
27. Double or Triple
28. Saturated
29. Unsaturated
30. $C_nH_{2n+2}$ (Alkane)
31. $C_nH_{2n}$ (Alkene)
32. $C_nH_{2n-2}$ (Alkyne)
33. -ane
34. -ene
35. -yne
36. Denatured Alcohol
37. Absolute Alcohol
38. Vinegar
39. Esterification
40. Saponification
41. Micelles
42. Fullerene or Buckminsterfullerene
43. $C_{60}$
44. Graphite
45. Diamond
46. True
47. False (Unsaturated)
48. True
49. False (Soap)
50. True