PYQ Vault
EbooksTutor

Percentage of nitrogen by Kjeldahl method from the acid neutralised by ammonia

This type of question, asked 5 times: 2021 Paper 15, 29 Jun 2022, 25 Jul 2022, 1 Feb 2024, 22 Jan 2026 S2. All 5 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    2021 Paper 15

    35
    In Kjeldahl method, 0.8 g0.8\text{ }g of organic compound is used. % of nitrogen come out to be 46%46\%. the mlml of 1MH2SO41MH_{2}SO_{4} used to neutralize NH3NH_{3}

    Tap an option to check your answer.

  2. Question 2

    29 Jun 2022

    58
    Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g0.55\text{ }g of the compound neutralised 12.5 mL12.5\text{ }mL of 1MH2SO41MH_{2}SO_{4} solution. The percentage of nitrogen in the compound is (Nearest integer)

  3. Question 3

    25 Jul 2022

    58
    While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from 0.25 g0.25\text{ }g of the compound neutralized 2.5 mL2.5\text{ }mL of 2MH2SO42MH_{2}SO_{4}. The percentage of nitrogen present in organic compound is .......

  4. Question 4

    1 Feb 2024

    146
    Following Kjeldahl's method, 1 g1\text{ }g of organic compound released ammonia, that neutralised 10 mLmL of 2MH2SO42MH_{2}SO_{4}. The percentage of nitrogen in the compound is _______ %\%.

  5. Question 5

    22 Jan 2026 S2

    31
    When 1 g of compound ( X ) is subjected to Kjeldahl's method for estimation of nitrogen, 15 mL,1MH2SO4mL,1MH_{2}SO_{4} was neutralized by ammonia evolved. The percentage of nitrogen in compound (X)(X) is :

    Tap an option to check your answer.