Q.

(A) : Kjeldahl method is not applicable for the estimation of nitrogen in nitro compounds, azocompounds and pyridine

 (R) : Nitrogen of nitrocompounds, azo compounds and pyridine cannot be converted  to ammonia in Kjeldahl’s method

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a

Both (A) and (R) are true and (R) is the correct explanation of (A).

b

Both (A) and (R) is false

c

(A) is true but (R) is false

d

Both (A) and (R) are true and (R) is the not the correct explanation of (A).

answer is A.

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Detailed Solution

Both (A) and (R) are true and (R) is the correct explanation of (A).

In Kjeldahl method nitrogen of compound is estimated in the form of NH3.

Nitrogen of azo compounds,pyridine is not converted in to NH3

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(A) : Kjeldahl method is not applicable for the estimation of nitrogen in nitro compounds, azocompounds and pyridine (R) : Nitrogen of nitrocompounds, azo compounds and pyridine cannot be converted  to ammonia in Kjeldahl’s method