Chemistry Class 11 Question Answer & Video

Analysis of Organic Compounds

Video For All Chapters Chemistry Class 11

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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