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% of nitrogen can be determined by the process _________

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% of nitrogen can be determined by the process _________

(a) dulong’s formula

(b) orsat’s apparatus

(c) kjeldahl’s method

(d) fractional distillation

I had been asked this question by my college director while I was bunking the class.

My question is from Analysis of Coal and Selection in division Fuel Technologies of Applied Chemistry

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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.

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