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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology0.3780 grams of an organic chloro compound gave 0.5740 grams of silver chloride in Carius estimation. % of chlorine present in the compound is -
1. | 25% | 2. | 37.59% |
3. | 42% | 4. | 05.70 % |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the Carius method, 0.468 grams of an organic sulphur compound gives 0.668 grams of barium sulphate. The percentage of sulphur in the given compound is -
1. | 19.59% | 2. | 25.40% |
3. | 09.24% | 4. | 27.59% |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn organic compound contains 69% carbon, and 4.8% hydrogen, the remainder being oxygen. The masses of carbon dioxide, and water produced when 0.20 g of this substance is subjected to complete combustion would be respectively -
1. 0.506 g, 0.0864 g
2. 0.906 g, 0.0864 g
3. 0.0506 g, 0.864 g
4. 0.0864 g, 0.506 g
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA sample of 0.50 g of an organic compound was treated according to Kjeldahl’s method. The ammonia evolved was absorbed in 50 mL of 0.5 M . The residual acid required 60 mL of 0.5 M solution of NaOH for neutralization. The percentage composition of nitrogen in the compound is:
1. | 52% | 2. | 61% |
3. | 56 % | 4. | 54 % |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAny type of chromatography shares which of the following characteristic?
1. Use of molecules that are soluble in water.
2. Use of inert carrier gas.
3. Calculation of Rf value for the molecule separated.
4. Use of a mobile and a stationary phase.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology