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JEE 2020: Practical Chemistry

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Question 1

In Kjeldahl process 0.6 g organic compound is taken and ammonia evolved is passed into 100ml 0.5N H2SO4. The residual acid was diluted to 500ml with water. 25ml of diluted acid required for 20.4ml 0.1N NaOH for complete neutralization. What is % of N in compound?

Question 2

Sugar containing an impurity of common salt can be purified by crystallization from

Question 3

Which of these is correct for the method involved to test phosphorus in compound?

Question 4

In carius method, 0.15g of organic compound gave 0.12g AgBr. What is % of Br in compound?

Question 5

Consider the following equilibrium

White precipitate of AgCI appears on adding which of the following?
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Dec 4JEE & BITSAT