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(a). If both (A) and (R) are correct and...

(a). If both (A) and (R) are correct and (R) is the correct explanation for (A).
(b). If both (A) and (R) are correct and (R) is not the correct explanation for (A).
(c). If (A) is correct and (R) is incorrect.
(d). If (A) is incorrect and (R) is correct. (e). If both (A) and (R) are incorrect.
Q. Assertion (A): Dumas method is more applicable to nitrogen containing organic compounds than Kjeldahl's method.
Reason (R): Kjeldahl's method does not give stisfactory results for compounds in which N is linked to O atom.

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The correct Answer is:
To solve the question regarding the assertion (A) and reason (R), we will analyze both statements step by step. ### Step 1: Analyze Assertion (A) Assertion (A): "Dumas method is more applicable to nitrogen containing organic compounds than Kjeldahl's method." - **Explanation**: The Dumas method is a technique used for determining the nitrogen content in organic compounds. It converts nitrogen in the sample into nitrogen gas (N2), which can be measured. This method is generally applicable to a wider range of nitrogen-containing compounds compared to the Kjeldahl method. ### Step 2: Analyze Reason (R) Reason (R): "Kjeldahl's method does not give satisfactory results for compounds in which N is linked to O atom." - **Explanation**: The Kjeldahl method involves converting nitrogen in the sample to ammonia (NH3) through digestion with sulfuric acid. However, it has limitations, particularly with compounds where nitrogen is bonded to oxygen (like nitro or nitroso groups) or when nitrogen is part of a ring structure. This means that the Kjeldahl method may not provide accurate results for certain nitrogen-containing compounds. ### Step 3: Determine the Relationship Between (A) and (R) - Both assertion (A) and reason (R) are correct. - Reason (R) provides a valid explanation for why assertion (A) is true, as it highlights the limitations of the Kjeldahl method compared to the Dumas method. ### Conclusion Since both (A) and (R) are correct, and (R) is the correct explanation for (A), the answer is: **(a). If both (A) and (R) are correct and (R) is the correct explanation for (A).**
To solve the question regarding the assertion (A) and reason (R), we will analyze both statements step by step. ### Step 1: Analyze Assertion (A) Assertion (A): "Dumas method is more applicable to nitrogen containing organic compounds than Kjeldahl's method." - **Explanation**: The Dumas method is a technique used for determining the nitrogen content in organic compounds. It converts nitrogen in the sample into nitrogen gas (N2), which can be measured. This method is generally applicable to a wider range of nitrogen-containing compounds compared to the Kjeldahl method. ### Step 2: Analyze Reason (R) ...
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