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JEE Main Test 1...

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  • Question 1
    4 / -1

    1.2 g of organic compound on Kjeldahlization liberates ammonia which consumes 30 cm of 1 N HCI. The percentage of nitrogen in the organic compound is .. 

  • Question 2
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    29.5 mg of an organic compound containing nitrogen was digested according to Kjeldahl's method and the evolved ammonia was absorbed in 20 mL of 0.1 M HC1 solution. The excess of the acid required 15 mL of 0.1 M NaOH solution for complete neutralisation. The percentage of nitrogen in the compound is

  • Question 3
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    Which one of the following compounds gives white precipitate with AgNO3?

  • Question 4
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    Consider separate solution of 0.500 M C2H5OH(aq), 0.100 M Mg3 (PO4)2 (aq), 0.250 M KBr (aq) and 0.125 M Na3PO4 (aq)2 at 25° C. Which statement is true about these solution assuming all salts to be strong electrolytes.

  • Question 5
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    If the H+ concentration decreased from 1 M to 10-4 M at 25oC for the couple MnO-4/ Mn2+, then the oxidisting power of the MnO-4/ Mn2+ couple decreases by

  • Question 6
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    Consider the reaction, 2A + B → products When concentration of B alone was doubled, the half-life did not change. When the concentration of A alone was doubled, the rate increased by two times. The unit of rate constant for this reaction is

  • Question 7
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    For Freundlich isotherm, a graph of a log x/m is plotted against log p. The slope of the line and its y-axis intercept, respectively corresponds to

  • Question 8
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    The velocity of oxidation of oxalic acid by acidified KMnO4 increases as the reaction progress. It is an example of

  • Question 9
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    Concentrated nitric acid, upon long standing, turns yellow-brown due to the formation of

  • Question 10
    4 / -1

    A radioactive substance takes 20 min to decay 25%. How much time will be taken to decay 75% ?

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