0.284 g of an organic substance gave 0.287 g AgCl in a carius method for the estimation of halogen. The percentage of Cl in the compound is-

1. 5%

2. 18%

3. 25%

4. 33%

Subtopic:  Quantitative Analysis of Organic Compounds |
 76%
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Match Column I with Column II.

Column I Column II
A. Dumas method 1. AgNO3
B. Kjeldahl’s method 2. Silica gel
C. Carius method 3. Nitrogen gel
D. Chromatography 4. Ammonium sulphate

Codes

A B C D
1. 3 4 1 2
2. 1 2 3 4
3. 1 4 3 2
4. 4 1 3 2
Subtopic:  Quantitative Analysis of Organic Compounds |
 74%
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Metallic sodium is fused with organic compounds for testing nitrogen, sulphur, and halogens. The correct reason behind this is:

1. To convert all compounds to their ionic form.
2. Sodium reduces the compounds.
3. Sodium converts all compounds in their covalent form.
4. None of the above.
Subtopic:  Quantitative Analysis of Organic Compounds |
 70%
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In Duma's method of estimation of nitrogen, 0.35 g of an organic compound gave 55 ml of nitrogen collected at 300 K temperature and 715 mm pressure. The percentage composition of nitrogen in the compound would be:

(Aqueous tension at 300 K = 15 mm)

1. 16.45

2. 27.45

3. 44.45

4. 35.45

Subtopic:  Quantitative Analysis of Organic Compounds |
 51%
From NCERT
NEET - 2011
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A compound that does not give a positive test in Lassaigne’s test for nitrogen is-

1. Urea 2. Hydrazine
3. Azobenzene 4. Phenyl hydrazine
Subtopic:  Quantitative Analysis of Organic Compounds |
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