Q. Given below are two statements I and II. Statement I: Dumas method is used for estimation of 'Nitrogen' in an organic compound. Statement II: Dumas method involves the formation of ammonium sulphate by heating the organic compound with conc $\text{H}_2\text{SO}_4$. In the light of the above statements, choose the correct answer from the options given below
A) Statement I is true but Statement II is false
B) Both Statement I and Statement II are false
C) Statement I is false but Statement II is true
D) Both Statement I and Statement II are true
Explanation
[Solution by Dr. Abubacker] Dumas method does estimate nitrogen (Statement I true), but it works by heating the compound with CuO to liberate $N_2$ gas which is collected over KOH. Formation of ammonium sulphate with conc. $H_2SO_4$ belongs to the Kjeldahl method, so Statement II is false. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.