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Analytical Chemistry Test - 4
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Analytical Chemistry Test - 4
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  • Question 1/10
    4 / -1

    To an inorganic mixture dil. H2SO4 is added in cold; colourless, odourless gas is evolved. The mixture contains:

    Solutions

    Sulphite radicle will give a burning sulphur odour. Acetate radical will give a sweet, venegar odour. Nitrite will give a reddish brown gas. Carbonate will give a colourless, odourless gas, i.e. CO2.

     

  • Question 2/10
    4 / -1

    … is formed when potassium iodide is heated with conc. H2SO4?

    Solutions

     

  • Question 3/10
    4 / -1

    A reagent that can distinguish between a chloride and a peroxide is:

    Solutions

    Dil. H2SO4 doesn’t react with chloride but reacts with peroxide

     

  • Question 4/10
    4 / -1

    Ozone when reacts with potassium iodide solution liberates certain product, which turns starch paper blue. The liberated substance is:

    Solutions

    Ozone react with KI solution to liberate I2 gas.

     

  • Question 5/10
    4 / -1

    Ammonia reacts with excess of chlorine to form

    Solutions

     

  • Question 6/10
    4 / -1

    Which of the following anions would decolourise acidified KMnO4 solution?

    Solutions

     

  • Question 7/10
    4 / -1

    Which one of the following anions is not easily removed from aqueous solutions by precipitation?

    Solutions

    As most of the nitrates are soluble in water.

     

  • Question 8/10
    4 / -1

    The number of hydroxide ions, produced by one molecule of sodium carbonate (Na2CO3) on hydrolysis is:

    Solutions

    Hence, it is clear that 2OH− ions will be formed on hydrolysis of one molecule of sodium corbonate.

     

  • Question 9/10
    4 / -1

    Gas A is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling, the precipitate is dissolved. On heating the resultant solution, the white precipitate reappears with the evolution of gas B. The gases A and B respectively are:

    Solutions

    According to the equation,

    Hence, the gas A and B are CO2 and CO2 respectively

     

  • Question 10/10
    4 / -1

    Which of the following doesn't give a ppt. with silver nitrate solution?

    Solutions

    It doesn't provide free Br− ions to react with AgNO3.
     

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