Organic Compounds

Chemistry Board Question
Chapter Fifteen

Organic Compounds
Short Question
1. i) What is the vital force notion theory of organic compounds? How has this been proved? (CB-01, JB-99, RB-04) 2
 ii) How the vital force notion theory of organic compound was- proved unreasonable? (RB-04) 1
2. What is meant by organic compounds? (RB-05, CtgB-99, CB-03, JB-02, CtgB-04) 2/1
3. What are the causes of abundance of organic compounds? (RB-99, 02, DB-99, RB-04, CtgB-01, JB--05, SB-04)JB 08 1/2
4. What is meant by organic compound? Classify them. (CtgB-00, DB-00, 03, RB-01, 05) 2/3
5. What do you mean by aromatic compounds? Give examples. (DB-02, JB, CtgB-03, CB-00) 2
6. i) Classify the organic compounds with examples. (SB-04) 2
 ii) How are organic compounds classified? Give an example of each class. (BB-01) 2
7. Write down the four differences between the organic and the inorganic compounds. (CB-01) 2
9. i) What are aliphatic compounds? Give two examples. (CtgB-05) 1
 ii) What is the meaning of the word paraffins? (DB-01, SB-04, CB-03, CtgB-02) 1
10. What is meant by catenation? Give example. (CtgB-05, BB-02, BB-02, DB-02) 1
11. Prepare propane from the sodium salt of fatty acid? (JB-05) 2
12. What is alkanes? (RB, CB-02, 99, CtgB-99) 1
13. i) What is meant by alkyl radical or alkyl? What are role advantage of using 'R' in chemical equatios? (BB, JB-00) 1+2
 ii) How alkyl radical is formed? (CtgB-05) 1
14. What is meant by catenation and functional group. Write with examples. (RB, JB-00, 03) 2
15. Write about the properties and uses of alkanes. (CtgB-99) 2
16. i) What are hydrocarbons? (DB-02, CB-04, RB-99) 1
 ii) What are hydrocarbons? How many are the types? 2
 iii) What are the general molecular formulae of alkanes and alkenes? (RB-05) 1
 iv) What do you mean by alkanes and alkynes? (SB-01, CB-99) 2
 v) What do you mean by alkenes and alkynes? give example. (CB-01) 2
 vi) Write the general formulae of alkanes and alkenes. (RB-05) 1
17. i) Describe Wurtz reaction. (RB-01, BB-03, BB-05) 2
 ii) How alkane can be prepared by Wurtz reaction. Write with reaction. (RB-03) 2
 iii) What is Wurtz reaction? Write with equation. (CB-05) 1+1=2
18. i) What is isomerisom? Give example. (JB-01, DB-05, DB-05, CtgB-00, RB-04, SB-03) 2
 ii) Write the names and structural formulae of the two isomers of C2H6O. (DB-05, 03) 2
 iii) What is meant by isomerism? Write the name and structural formula of one isomer of ethanol. (RB-04) 1+1=2
 iv) What is called isomerism? Show the structures with names of two isomers of the symbol C2H6O. (RB-05) 2
19. i) What is meant by functional group? Give example. (RB-05, CB, JB, CtgB-00, 01, 04, SB-05, DB-05) 2
 ii) Write the names structural formulae of two functional groups. (CB-01, BB-03) 1
 iii) Write down the molecular formulae and empirical formulae of Benzene and glucose. (CtgB-00) 2
20. Write the names and structural formulae of functional group for the following compounds :
 (a) organic acid (DB-05) (b) Alcohol (CtgB-02) (c) Alkene (BB-02) (d) Alkyne (RB-99)
21. Write down the structural formulae of the following compounds.
(a) Tetrabromothane (CtgB-01) (b) 1, 1 di-iodo ethane (CtgB-01)
(c) Glycerine (CtgB-01) (d) Propene (SB-04)
(e) Propyne (SB-04) (f) 2, 3 dimethyl pentane. (JB-02)
(g) Neopentane (DB-01) (h) Monochloro ethanioc acid (DB-01)
(j) Butyl Benzene (JB-01) (k) 2, 3 dimethyl 4 ethyle heptane (RB-05, JB-00)
(l) Propane, propene, propyne (CtgB-03) (m) 2, 3 dimethyl 4 ethyl hexane (JB-00)
(n) Benzene (CtgB-03) 
22. i) What is homologous series? Give example. (EB-03) 2
 ii) Explain / Write down the characteristics of homologous series with example. (RB-00) 2
 iii) Define homologous series with example. (RB-00) 2
 iv) What do you mean by homologous series? Write its two characteristics with examples. (CB-05) 1+1=2
23. What are alkenes? Write its preparation with equation. (EB-04)
24. i) What do you mean by alkenes and alkynes? Give examples. (CB-02, SB-01) 2
 ii) Find out the difference between alkanes and alkenes with reactions. (JB-03) 2
25. What is polymerisation reactions? Write with example. (SB-02) 2
26. Two gas jars having no lavel contains ethene and ethyne gas. How can you identify / defect both the two gases? (JB-02) 2
27. i) How would you separate alkene from alkane in the laboratory. (RB-05) 1
 ii) How would you separate ethene from alkanes-write with reactions. (BB-03) 2
 iii) How would you test for unsaturation in the organic compounds? (DB-00, CB-99, DB-01, CtgB-99) pre08 2
28. How can you detect alkane and alkene? Write with reactions. (JB-00, DB-01, CB-02, BB-03) 2
29. Write down the definition of saturated and unsaturated hydrocarbons with examples. (SB-04) 2
30. What is meant by alkynes? (CB-00, JB-04, DB-02) 1
31. i) How ethyne is prepared from Calcium Carbide? (DB-01) 2
 ii) How would you prepare ethyne / acetylene from Calcium Carbide (CaC2)? Write with equation. (RB-00, DB-99) 2
32. i) What is alcohol? (BB-05) 1
 ii) What is the general molecular formula of alcohol? (CB-04, CtgB-03, JB-01) 1
 iii) Write the uses of alcohol. (JB-05, CtgB-04, DB-03, DB-00) 1
33. i) How alcohol is prepared in the industry? 3
 ii) Write down the industrial process for the preparation of ehanol with equation. (JB-04) 2
 iii) Write down the two reactions of the industrial production of alcohol. (JB-00) 2
 iv) What is fermentation? (BB-05) 1
 v) Write down the reactions of industrial preparation of ethanol from starch. (CtgB-04) 2
 vi) Describe the industrial production of ehanol? (BB-05) 2
34. Write down the two chemical properties of alcohol. (CtgB-03, BB-05) 2
35. i) Describe the reaction for ester formation. (CB-03, JB-00) 2
 ii) How ester is prepared from ethanol? Write with equation. (RB-02, 99, CtgB-02, BB-03) 2
 iii) Describe the process of production of ester from ethanol. (CB-03, CtgB-01, BB-03, SB, DB-03, DB-00) 2
 iv) What are the products when ethanol reacts with ethanoic acid? (CtgB-01) 1
36. i) What are fatty acids? How they are named? Write with example. (DB-03, 00, BB-04, CtgB-03) 2
 ii) How will you prove that ethanoic acid contains OH group? (BB-02, RB-01, SB-04, RB-05, CB-05) 2
 iii) Write down the names formulae of two fatty acids. (SB-05) 1
 iv) How fatty acids are prepared? Write their uses and chemical properties. (CB-01, JB, RB-03) 2+1=3
37. What is glacial acetic acid? (CtgB-03, DB-01, 05, BB-03) 1
38. i) What is soap? (SB-02, CB-05)
 ii) Write one of its formula. (RB-01, JB-02, SB-04, BB-02, DB, RB-99) 1
 iii) How soap can be prepared? Write with equation. (RB-02, CB-99, RB-04) 2
39. Explain how detergent works. (DB, BB-02, RB-01) 2
40. Describe the industrial preparation of glycerine form oils and fats. 2/3
41. Write down the four differences between soap and detergent. (SB-01, RB-99, DB-99) 2
42. i) Describe the mechanism of cleaning action of soap. (SB-02) 2
 ii) How does soap clean the dirt? (RB-00, DB-99) 2
43. What is detergent? Explain its working mechanism. (RB-01, CtgB-99, BB-02) 1 
44. Write with equation, what happens, when-
 i) Ethane burns in oxygen. (DB-99, CB-99, SB-01) 1
 ii) Ethanol reacts with phosphorus (v) chloride. (DB-99, 04) 1
 iii) How ethanol reacts with ethanolic acid / CH3COOH in presence mineral acid. (SB-02, BB-01) 1
 iv) Ammonium cyanate is heated. (DB-02, JB-99) 1
 v) Achohol reacts with metallic sodium. (CB-00) 1
 vi) Chlorine gas is passed through boiling ethanoic acid. (SB-03, DB-05, RB-03) 1
 vii) Reaction of chlorine with ethanoic acid. (JB-04) 1
 viii) Ethanol reacts with metallic sodium. (SB-05) 1
 ix) Ethyne reacts with hydrogen iodide. (CtgB-00) 2
 x) When alkane is burnt completely in sufficient oxygen. (SB-05) 1
 xi) Combustion of pentane. (JB-05) 1
 xii) Sodium ethanoate is heated with sodalime. (SB-03, CtgB-00, DB-05, JB-01, BB-04, 05) 1
 xiii) Water is added to ethyl acetate. (JB-99) 1
 xiv) Methyl bromide with metallic sodium in dry ether is heated. (BB-05) 1 
 xv) Methyl bromide dissolved in dry ether is heated with metallic sodium. (RB-05) 1 
 xvi) Ethene gas is passed through the aqueous potassium permanganate solution. (DB-04, RB-04, CtgB-05) 1 
 xvii) Ethanoic acid reacts with phosphorus pentachloride. (RB-05) 1
 xviii) Ethanoic acid reacts with phosphorus pentachloride. (RB-05) 1
 xix) A mixture of methane and chlorine is kept in bright sunlight. (DB-02, CB-99, RB-03, JB-99) 1 
 xx) Propyne burns in oxygen gas. (DB-01) 1 
 xxi) Ethene burns in oxygen gas. (SB-04, CtgB-03) 1
 xxii) Fats mixed with caustic soda / sodium hydroxide and then heated. (DB-01, BB-04) 1 
 xxiii) Ethene reacts with chlorine gas at room temperature. (RB-02, CtgB-00, JB-03, BB-05) 1
 xxiv) Ethanol is heated with excess concentrated sulphuric acid. (DB-00, SB-02, CtgB-01) 1
 xxv) Propyl iodide solution reacts with aquous solution of caustic soda. (CB-02) 1 
 xxvi) Mercury fullminate is exploded near acetylene gas. (RB-04) 1 
 xxvii) Ethyl iodide is reacts with aquous solution of sodium hydroxide. (RB-03) 1
 xxviii) Discuss the reactions with methane and chlorine at different conditions. (Hints : Both bright sunlight and diffused sunlight) (RB-99) 3
 xix) Ethanol is added to ehanoic acid in presence of concentrated sulphuric acid, mineral acid. (RB-03, SB-02, SB-02, JB-03) 1 
 xxx) Ethanol is heated with concentrated H2SO4 at 1800C. 1 
Essay Type
45. What are organic compounds? Discuss with example for each the classification of organic compounds. (CtgB-00, SB-01) 4
46. i) How alcohol is produced in the industry? 3
 ii) Describe the industrial process for the production of ethyl alcohol from starch. (DB-05)pre08 3
47. How fatty acids are prepared? Write about their chemical properties. (CB-01, JB, RB-99) 3
48. What is fatty acids? Describe its industrial manufacturing process. (RB-99) 3
49. What is fatty acids? Discuss its preparation, properties and uses. (JB-99) 4
50. What is natural gas? Write its uses. (CB-01) 3
51. Show with reactions how alkanes, alkenes and alkynes can be identified. (JB-00) 4 
52. i) In three gas jars there contains alkane, alkene and alkyne respectively How could you detect them in the laboratory? (DB-01) 3
 ii) How would you differentiated amongst alkanes, alkenes in the laboratory? Explain. (CB-02, RB-05) 2
53. Describe the industrial process for the production of glycerine from oils and fats. (CB-01) 3
54. Write down the Wurtz reaction and esterformation reaction. (CtgB-01, CB-03) 4
55. Show with the reaction how ethene can be separated from alcohol. (BB-03) 3
56. What is homologous series? Write its three characteristics. (BB-04) 1+3=3
57. Complete the following reactions. 
 a) C3H4+O2  (DB-01) b) Fat+NaOH (DB-01)
 c) CH3COONa+NaOH (CtgB-00, JB-01) d) C6H6+O2  (RB-01)
 e) CH3CH2OH+CH3COOH  (RB-01) f) CH3CH2OH+H2SO4 (JB-02)
 g) CH4+Cl2 (CtgB-03, JB-00, SB-01, CB-99)
 h) Ethyl acetate + H2O  (JB-99) i) C2H4+Cl2  (CB-00)
 j) CH3CH2OH+Na  (CtgB-01, DB-02, CB-01)
 k) CH3CH2OH+O2  (JB-00) l) C2H2+HI  (CtgB-00, 99)
 m) C2H6+O2  (CtgB-03, CB-99) n) CH3CH2CH2I+NaOH (aq)  (CtgB-02)
 o) C2H5OH(l) + PCl5(l) (aq)  (CB-04) p) CH4+Cl2 
 q) H2C=CH2+KMnO4 (aq)  r) CH3CH2I(aq)+NaOH (aq)  (CtgB-99)
 s) CH3COOC2H5 (l) + H2O  t) CH3COOH(l)+PCl5(l) 
 u) Mg+CH3COOH(aq)  v) CH3CH2OH+PCl3  (CtgB-99)