Assertion (A): | CCl4 doesn't give precipitate of AgCl on heating with AgNO3. |
Reason (R): | CCl4 is a non-polar molecule. |
1. | (A) is true and (R) is the correct explanation of (A). |
2. | (A) is true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false |
In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of-
Lassaigne's test can detect -
1. Nitrogen, Sulphur, Halogens
2. Nitrogen, Cyanides, Sulphur
3. Sodium, Sulphur, Halogens, Phosphorus
4. Nitrogen, Sulphur, Halogens, Phosphorus
Nitric acid is added to sodium extract before adding silver nitrate for testing halogens because:
1. Nitric acid reduces sulphide
2. Nitric acid decomposes NaCN and Na2S
3. Nitric acid oxidises the organic compound
4. Nitric acid acts as a dehydrating agent
A mixture of calcium sulphate and camphor can be separated by-
1. Filtration
2. Evaporation
3. Sublimation
4. Chromatography
A gas among the following that can be absorbed by potassium hydroxide is -
1. | Carbon dioxide | 2. | Silicon dioxide |
3. | Hydrogen | 4. | Carbon monoxide |