MEDIUM
Earn 100
Is Beilstein's test a satisfactory test for the detection of halogens?
Important Questions on Organic Chemistry- Some Basic Principles and Techniques
MEDIUM
During the fusion of organic compound with sodium metal, nitrogen present in the organic compound is converted into
MEDIUM
Which of the following compound is added to the sodium extract before addition of silver nitrate for testing of halogens?
HARD
Match List-I with List-II
| List-I | List-II | ||
| Test/Reagents/Observation(s) | Species detected | ||
| (a) | Lassaigne's Test | (i) | Carbon |
| (b) | Cu(II) oxide | (ii) | Sulphur |
| (c) | Silver nitrate | (iii) | , and halogen |
| (d) | The sodium fusion extract gives black precipitate with acetic acid and lead acetate | (iv) | Halogen Specifically |
The correct match is :
HARD
Match the organic compounds in column - with the Lassaigne's test result in column - appropriately:
| Column – | Column - | ||
| A. | Aniline | i. | Red colour with |
| B. | Benzene sulfonic acid | ii. | Violet color with sodium nitroprusside |
| C. | Thiourea | iii. | Blue color with and acidic solution of |
EASY
Which of the following compound will give blood red colour while doing the Lassaigne's test for .
MEDIUM
In the detection of nitrogen of an organic compound by Lassaigne's test, a prussian blue colour is obtained. This is due to the formation of which of the following complexes?
EASY
Reagent, naphthylamine and sulphanilic acid in acetic acid is used for the detection of
MEDIUM
When nitrogen and chlorine containing organic compound is reacted with sodium metal, it forms
EASY
Sodium extract is heated with concentrated before testing for halogens because :
MEDIUM
During halogen test, sodium fusion extract is boiled with concentrated to
EASY
When is treated with conc. , reddish brown gas is evolved. The gas is :
EASY
The halide which does not give a precipitate with AgNO3 is:
MEDIUM
An appropriate method for molecular weight determination of chloroform is
MEDIUM
Which of the following statement is not applicable to Beilstein test?
EASY
In an organic compound, the presence of halogen is detected by
MEDIUM
The presence of halogen in an organic compounds cannot be detected by
MEDIUM
of an organic compound gave of silver bromide by halogen estimation method. The percentage of bromine in the compound is _____. (Atomic mass of )
MEDIUM
Name two compounds which do not contain a halogen but respond to Beilstein's test.
MEDIUM
Y Yellow or white ppt.
Which of the following cannot be X?
EASY
Copper wire test of halogens is known as
