Question

% of nitrogen can be determined by the process _________

(a) dulong’s formula

(b) orsat’s apparatus

(c) kjeldahl’s method

(d) fractional distillation

Answer 1

Correct answer is (c) kjeldahl’s method

Best explanation: The dulong’s formula is used to find calorific value of the coal. Orsat’s apparatus is used for analysis of the flue gas. Fractional distillation is used in purification of petroleum. So, kjeldahl’s process is used for determination of nitrogen.