CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317486
Presence of halogen in organic compounds can be detected using
1 Leibigs' test
2 Duma's test
3 Kjeldabl's test
4 Beilstein test
Explanation:
Beilstein test: A wire is heated and dipped into the sample and again introduced in the flame. If blue/green colour appears, a halogen \((\mathrm{Cl}, \mathrm{Br}\) or I) may be present. Therefore with this test presence of halogen in organic compound can be detected.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317487
During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into
1 \(\mathrm{NaNO}_{2}\)
2 \(\mathrm{NaNH}_{2}\)
3 \(\mathrm{NaCN}\)
4 \(\mathrm{NaNC}\)
Explanation:
When an organic compound is fused with sodium metal, nitrogen of the compound is converted to sodium cyanide. \(\mathrm{Na}+\mathrm{C}+\mathrm{N} \rightarrow \mathrm{NaCN}\) This is called Lassaigne's test. This test is performed for the detection of \(\mathrm{N}, \mathrm{S}\) or halogens in organic compounds.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317488
A solution of \(\mathrm{FeCl}_{3}\) when treated with \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\) gives a prussian blue precipitate due to the formation of
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317489
Which of the following nitrogen containing compound does not give Lassaigne's test?
1 Glycene
2 Hydrazine
3 Phenyl hydrazine
4 Urea
Explanation:
Hydrazine \({\mathrm{\left(\mathrm{N}_{2} \mathrm{H}_{4}\right)}}\) does not contain any carbon atom attached to nitrogen and fails to give Lassaigne's test. So, the correct option is (2).
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317486
Presence of halogen in organic compounds can be detected using
1 Leibigs' test
2 Duma's test
3 Kjeldabl's test
4 Beilstein test
Explanation:
Beilstein test: A wire is heated and dipped into the sample and again introduced in the flame. If blue/green colour appears, a halogen \((\mathrm{Cl}, \mathrm{Br}\) or I) may be present. Therefore with this test presence of halogen in organic compound can be detected.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317487
During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into
1 \(\mathrm{NaNO}_{2}\)
2 \(\mathrm{NaNH}_{2}\)
3 \(\mathrm{NaCN}\)
4 \(\mathrm{NaNC}\)
Explanation:
When an organic compound is fused with sodium metal, nitrogen of the compound is converted to sodium cyanide. \(\mathrm{Na}+\mathrm{C}+\mathrm{N} \rightarrow \mathrm{NaCN}\) This is called Lassaigne's test. This test is performed for the detection of \(\mathrm{N}, \mathrm{S}\) or halogens in organic compounds.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317488
A solution of \(\mathrm{FeCl}_{3}\) when treated with \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\) gives a prussian blue precipitate due to the formation of
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317489
Which of the following nitrogen containing compound does not give Lassaigne's test?
1 Glycene
2 Hydrazine
3 Phenyl hydrazine
4 Urea
Explanation:
Hydrazine \({\mathrm{\left(\mathrm{N}_{2} \mathrm{H}_{4}\right)}}\) does not contain any carbon atom attached to nitrogen and fails to give Lassaigne's test. So, the correct option is (2).
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317486
Presence of halogen in organic compounds can be detected using
1 Leibigs' test
2 Duma's test
3 Kjeldabl's test
4 Beilstein test
Explanation:
Beilstein test: A wire is heated and dipped into the sample and again introduced in the flame. If blue/green colour appears, a halogen \((\mathrm{Cl}, \mathrm{Br}\) or I) may be present. Therefore with this test presence of halogen in organic compound can be detected.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317487
During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into
1 \(\mathrm{NaNO}_{2}\)
2 \(\mathrm{NaNH}_{2}\)
3 \(\mathrm{NaCN}\)
4 \(\mathrm{NaNC}\)
Explanation:
When an organic compound is fused with sodium metal, nitrogen of the compound is converted to sodium cyanide. \(\mathrm{Na}+\mathrm{C}+\mathrm{N} \rightarrow \mathrm{NaCN}\) This is called Lassaigne's test. This test is performed for the detection of \(\mathrm{N}, \mathrm{S}\) or halogens in organic compounds.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317488
A solution of \(\mathrm{FeCl}_{3}\) when treated with \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\) gives a prussian blue precipitate due to the formation of
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317489
Which of the following nitrogen containing compound does not give Lassaigne's test?
1 Glycene
2 Hydrazine
3 Phenyl hydrazine
4 Urea
Explanation:
Hydrazine \({\mathrm{\left(\mathrm{N}_{2} \mathrm{H}_{4}\right)}}\) does not contain any carbon atom attached to nitrogen and fails to give Lassaigne's test. So, the correct option is (2).
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317486
Presence of halogen in organic compounds can be detected using
1 Leibigs' test
2 Duma's test
3 Kjeldabl's test
4 Beilstein test
Explanation:
Beilstein test: A wire is heated and dipped into the sample and again introduced in the flame. If blue/green colour appears, a halogen \((\mathrm{Cl}, \mathrm{Br}\) or I) may be present. Therefore with this test presence of halogen in organic compound can be detected.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317487
During the fusion of an organic compound with sodium metal, nitrogen of the compound is converted into
1 \(\mathrm{NaNO}_{2}\)
2 \(\mathrm{NaNH}_{2}\)
3 \(\mathrm{NaCN}\)
4 \(\mathrm{NaNC}\)
Explanation:
When an organic compound is fused with sodium metal, nitrogen of the compound is converted to sodium cyanide. \(\mathrm{Na}+\mathrm{C}+\mathrm{N} \rightarrow \mathrm{NaCN}\) This is called Lassaigne's test. This test is performed for the detection of \(\mathrm{N}, \mathrm{S}\) or halogens in organic compounds.
KCET - 2011
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317488
A solution of \(\mathrm{FeCl}_{3}\) when treated with \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\) gives a prussian blue precipitate due to the formation of
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317489
Which of the following nitrogen containing compound does not give Lassaigne's test?
1 Glycene
2 Hydrazine
3 Phenyl hydrazine
4 Urea
Explanation:
Hydrazine \({\mathrm{\left(\mathrm{N}_{2} \mathrm{H}_{4}\right)}}\) does not contain any carbon atom attached to nitrogen and fails to give Lassaigne's test. So, the correct option is (2).
