Qualitative Analysis of Organic Compounds
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317490 In sodium fusion test of organic compounds, the nitrogen of an organic compound is converted to

1 Sodamide
2 Sodium cyanide
3 Sodium nitrite
4 Sodium nitrate
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317491 The blue colour obtained in the Lassaigne's test for the detection of

1 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
2 \(\mathrm{Fe}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
4 \(\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317492 Chemical formula of prussian blue is

1 \(\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
2 \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
4 None of these
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317493 The Lassiagne's extract is boiled with dil. \({\mathrm{\mathrm{HNO}_{3}}}\) before testing for halogens because,

1 \({\mathrm{\mathrm{Na}_{2} \mathrm{~S}}}\) and NaCN are decomposed by \({\mathrm{\mathrm{HNO}_{3}}}\)
2 silver halides are soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
3 AgCN is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
4 \({\mathrm{\mathrm{Ag}_{2} \mathrm{~S}}}\) is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317494 Lassaigne's test is used for detection of

1 phosphorous and halogens only
2 nitrogen, sulphur and phosphorous only
3 nitrogen, sulphur, phosphorous and halogens
4 nitrogen and sulphur only.
JEE Main - 2024
Join With Us for More Updates
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317490 In sodium fusion test of organic compounds, the nitrogen of an organic compound is converted to

1 Sodamide
2 Sodium cyanide
3 Sodium nitrite
4 Sodium nitrate
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317491 The blue colour obtained in the Lassaigne's test for the detection of

1 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
2 \(\mathrm{Fe}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
4 \(\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317492 Chemical formula of prussian blue is

1 \(\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
2 \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
4 None of these
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317493 The Lassiagne's extract is boiled with dil. \({\mathrm{\mathrm{HNO}_{3}}}\) before testing for halogens because,

1 \({\mathrm{\mathrm{Na}_{2} \mathrm{~S}}}\) and NaCN are decomposed by \({\mathrm{\mathrm{HNO}_{3}}}\)
2 silver halides are soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
3 AgCN is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
4 \({\mathrm{\mathrm{Ag}_{2} \mathrm{~S}}}\) is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317494 Lassaigne's test is used for detection of

1 phosphorous and halogens only
2 nitrogen, sulphur and phosphorous only
3 nitrogen, sulphur, phosphorous and halogens
4 nitrogen and sulphur only.
JEE Main - 2024
For More Updates join with Us
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317490 In sodium fusion test of organic compounds, the nitrogen of an organic compound is converted to

1 Sodamide
2 Sodium cyanide
3 Sodium nitrite
4 Sodium nitrate
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317491 The blue colour obtained in the Lassaigne's test for the detection of

1 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
2 \(\mathrm{Fe}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
4 \(\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317492 Chemical formula of prussian blue is

1 \(\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
2 \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
4 None of these
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317493 The Lassiagne's extract is boiled with dil. \({\mathrm{\mathrm{HNO}_{3}}}\) before testing for halogens because,

1 \({\mathrm{\mathrm{Na}_{2} \mathrm{~S}}}\) and NaCN are decomposed by \({\mathrm{\mathrm{HNO}_{3}}}\)
2 silver halides are soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
3 AgCN is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
4 \({\mathrm{\mathrm{Ag}_{2} \mathrm{~S}}}\) is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317494 Lassaigne's test is used for detection of

1 phosphorous and halogens only
2 nitrogen, sulphur and phosphorous only
3 nitrogen, sulphur, phosphorous and halogens
4 nitrogen and sulphur only.
JEE Main - 2024
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317490 In sodium fusion test of organic compounds, the nitrogen of an organic compound is converted to

1 Sodamide
2 Sodium cyanide
3 Sodium nitrite
4 Sodium nitrate
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317491 The blue colour obtained in the Lassaigne's test for the detection of

1 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
2 \(\mathrm{Fe}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
4 \(\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317492 Chemical formula of prussian blue is

1 \(\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
2 \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
4 None of these
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317493 The Lassiagne's extract is boiled with dil. \({\mathrm{\mathrm{HNO}_{3}}}\) before testing for halogens because,

1 \({\mathrm{\mathrm{Na}_{2} \mathrm{~S}}}\) and NaCN are decomposed by \({\mathrm{\mathrm{HNO}_{3}}}\)
2 silver halides are soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
3 AgCN is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
4 \({\mathrm{\mathrm{Ag}_{2} \mathrm{~S}}}\) is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317494 Lassaigne's test is used for detection of

1 phosphorous and halogens only
2 nitrogen, sulphur and phosphorous only
3 nitrogen, sulphur, phosphorous and halogens
4 nitrogen and sulphur only.
JEE Main - 2024
Join With Us for More Updates
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317490 In sodium fusion test of organic compounds, the nitrogen of an organic compound is converted to

1 Sodamide
2 Sodium cyanide
3 Sodium nitrite
4 Sodium nitrate
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317491 The blue colour obtained in the Lassaigne's test for the detection of

1 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
2 \(\mathrm{Fe}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{3}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{2}\)
4 \(\mathrm{Fe}_{2}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317492 Chemical formula of prussian blue is

1 \(\mathrm{Na}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
2 \(\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]\)
3 \(\mathrm{Fe}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]_{3}\)
4 None of these
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317493 The Lassiagne's extract is boiled with dil. \({\mathrm{\mathrm{HNO}_{3}}}\) before testing for halogens because,

1 \({\mathrm{\mathrm{Na}_{2} \mathrm{~S}}}\) and NaCN are decomposed by \({\mathrm{\mathrm{HNO}_{3}}}\)
2 silver halides are soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
3 AgCN is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\)
4 \({\mathrm{\mathrm{Ag}_{2} \mathrm{~S}}}\) is soluble in \({\mathrm{\mathrm{HNO}_{3}}}\).
JEE Main - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317494 Lassaigne's test is used for detection of

1 phosphorous and halogens only
2 nitrogen, sulphur and phosphorous only
3 nitrogen, sulphur, phosphorous and halogens
4 nitrogen and sulphur only.
JEE Main - 2024