Analysis of Organic Compounds, Class 11 Chemistry NCERT Solutions

1. There will be total 10  MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. Detection of nitrogen, sulphur, halogens and phosphorus in an organic compound is done by:

 Dumas method

 Metal-carbon test

 Lassaignes test

 Victor-meyer test

Question 1 of 10

2. In case both nitrogen and sulphur is present in an organic compound with sodium fusion extract a blood red colour is formed that is of:

 Ammonium molybdate

 Ferriferrocyanide

 ferric thiocyanate

 Ammonium phosphomolybdate

Question 2 of 10

3. When a compound is heated with copper(ii) oxide it is the test for:

  Nitrogen

 Halogens

 Carbon

 Phosphorus

Question 3 of 10

4. Laissaigne’s extract is made to:

 Convert ionic compounds to covalent compounds

 Convert covalent compounds to ionic compounds

  Dissolve the compound

 None of these

Question 4 of 10

5. In sulphur estimation, 0.157 g of an organic compound gave 0.4813 g of barium sulphate. The percentage of sulphur in the compound is:

  34%

 34.04%

 42.10%

 43%

Question 5 of 10

6. A compound when treated with sodium peroxide and the solution is boiled with nitric acid and then treated with ammonium molybdate is the test for:

 Nitrogen

 Phosphorus

 Sulphur

 Halogen

Question 6 of 10

7. The white precipitate which is formed in the detection of chloride ion is due to the formation of:

 Ammonium chloride

 Sodium chloride

 Aluminium sulphate

  Calcium chloride

Question 7 of 10

8. In Carius method of estimation of halogen, 0.15 g of an organic compound gave 0.12 g of AgBr. The percentage of bromine in the compound is:

  43%

 34.04%

 34%

 None of these

Question 8 of 10

9. A pale yellow precipitate soluble in ammonium hydroxide solution indicates the presence of:

  chlorine

 Iodine

 Bromine

 Phosphorus

Question 9 of 10

10. In the test of nitrogen the Prussian blue color formed is of:

 Nitrogen

 Sodium thiocyanate

 Ammonium molybdate

 Ferriferrocyanide

Question 10 of 10

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