A) \[C\]and\[H\]
B) nitrogen
C) chlorine
D) bromine
Correct Answer: A
Solution :
(i) Nitrogen is estimated by Dumas and Kjeldahls method. (ii) Chlorine and bromine are estimated by Carius method. (iii) Carbon and hydrogen are estimated by Leibigs method. In this method carbon and hydrogen are quantitatively converted into \[C{{O}_{2}}\] and\[{{H}_{2}}O\]. By knowing the weights of \[C{{O}_{2}}\] and \[{{H}_{2}}O\] formed, percentage of carbon and hydrogen in the compound can be calculated.
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