Question

[tex]\huge\underline{Question}[tex]

In DNA and RNA, nitrogen atom is present in the ring system. Can Kjeldahl method be used for the estimation of nitrogen present in these? Give reasons.

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Answer 1

Answer:

1. No, DNA and RNA have nitrogen in the heterocyclic ring which cannot remove as ammonia. The Kjeldahl method cannot be used to estimate nitrogen present in rings, azo and nitro groups present in these cannot be converted into ammonium sulphate.
2. Kjeldahl method is not applicable to compounds containing nitrogen in nitro and azo groups and nitrogen present in rings (e.g. pyridine, quinoline, isoquinoline) as nitrogen of these compounds does not convert to ammonium sulfate under the conditions of this method.

Explanation:

hope you appreciate this ans

Answer 2

Answer:

Huh ? is that ur real dp ?

Explanation:

No, DNA and RNA have nitrogen in the heterocyclic ring which cannot remove as ammonia. ... The Kjeldahl method cannot be used to estimate nitrogen present in rings, azo and nitro groups present in these cannot be converted into ammonium sulphate.