TEST PAPER 26 : CHAPTER 12 : ORGANIC COMPOUNDS : 25 MARKS

There are 13 questions in all and time limit is 45 minutes.

SECTION - A : CHOOSE APPROPRIATE ALTERNATIVE : [1 mark each, Total marks 3]

1. Oxidation of ethanol in presence of alkaline potassium permanganate gives...
   
   
   
   1. acetaldehyde
   2. ethane
   3. potassium ethoxide
   4. acetic acid
      
   
   
2. The enzyme which converts milk into curd is...
   
   
   
   1. lactase
   2. invertase
   3. zymase
   4. cellulase
      
   
   
3. Vinegar is...
   
   
   
   1. methanol
   2. ethanal
   3. methanoic acid
   4. ethanoic acid
      
   
   

   SECTION - B : ANSWER IN SHORT : [1 mark each, Total marks 3]
   

4. Mention the boiling point of ethanol.
5. Write the equation for the combustion of ethanol.
6. What is formalin ?
   
   

   SECTION - C : ANSWER IN BRIEF : [2 marks each, Total marks 8]
   

7. Explain : Functional group.
8. What is a polymer ? Give its classification.
9. Distinguish between soap and detergent(2 points).
10. Describe preparation of formaldehyde and write its reaction with hydrogen cyanide.
    
    

    SECTION - D : ANSWER THE FOLLOWING : [3 marks each, Total marks 6]
    

11. Describe preparation of ethanol from sugar(molasses).
12. Describe preparation of polyester and write its uses.
    
    

    SECTION - E : ANSWER IN DETAIL : [5 marks each, Total marks 5]
    

13. Describe preparation of acetic acid by fermentation and by chemical synthesis. Write its physical properties and its reaction with ethanol in presence of concentrated sulphuric acid.