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Kjeldahl's method is suitable for estimating nitrogen in those compounds in which nitrogen is linked to carbon and hydrogen.

1. Kjeldahl's method is suitable for estimating nitrogen in those compounds in which nitrogen is linked to carbon and hydrogen.
2. Kjeldahl's method is not used in case of nitro, azo and azoxy compounds.
3. Kjeldahl's method is used for estimating nitrogen in fertilizers and agricultural products.
4. None of the above

Correct answer: Kjeldahl's method is suitable for estimating nitrogen in those compounds in which nitrogen is linked to carbon and hydrogen.

Solution

Kjeldahl's method is specifically suitable for estimating nitrogen in organic compounds where nitrogen is directly bonded to carbon and hydrogen. This excludes nitro, azo, and azoxy compounds.

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