JEE PYQ: Qualitative Analysis Question 7
Question 7 - 2020 (08 Jan Shift 2)
Kjeldahl’s method cannot be used to estimate nitrogen for which of the following compounds?
(1). (C₆H₅NH₂)
(2). (CH₃CH₂-C≡N)
(3). (C₆H₅NO₂)
(4). (NH₂-CO-NH₂)
Show Answer
Answer: (3)
Solution
Kjeldahl’s method cannot be used for nitrogen determination of compounds having nitro groups or azo groups or nitrogen present in rings, as the nitrogen of these compounds cannot be converted to (NH₄)₂SO₄.
BETA
