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  • Question 1
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    The vapour pressure of 11 molal glucose solution at 100oC100^{o}C will be 

  • Question 2
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    The lowering of vapour pressure of 0.1 M aqueous solutions of $$NaCl,\  CuS{O_4}$$ and K2SO4{K_2}S{O_4} are ;

  • Question 3
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    At a certain temperature pure liquid A and liquid B have vapour pressures 10 torr and 37 torr respectively. For a certain ideal solution of A and B, the vapour in equilibrium with the liquid has the components A and B in the partial pressure ratio PA:PB=1:7P_A : P_B=1 : 7 . What is the mole fraction of A in the solution? 

  • Question 4
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    Vapour pressure increase with increase in : 

  • Question 5
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    Vapour pressure of pure 'A' is 70 mm of Hg at 250C25^0C it forms an ideal solution is with 'B' in which mole fraction of A is 0.8. If the vapour pressure of the solution is 84 mm is Hg at 250C25^0C, the vapour pressure of pure 'B' at 250C25^0C is :

  • Question 6
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    A mixture of  H2SO4H_2SO_4  and H2C2O4H_2C_2O_4 (oxalic acid) and some inert impurity weighing 3.185g was dissolved in water and the solution was made up to 1litre. 10mL of this solution required 3mL of 0.1N NaOHNaOH for complete neutralization. In another experiment, 100mL of the same solution in hot conditions requires 4mL of 0.02M KMnO4KMnO_4 solution for complete reaction.
    The weight % of H2SO4H_2SO_4 in the mixture was:-

  • Question 7
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    Which of the following have least vapour pressure?

  • Question 8
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    The possible van't Hoff factor for sodium chloride in water assuming sodium chloride is partially ionized:

  • Question 9
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    A 10%10\% solution of NaClNaCl means that in 100g100g of solution there is:

  • Question 10
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    When 20g of napthoic acid (C11H8O2C_{11}H_8O_2) is dissolved in 50g of benzene (Kf=1.72Kkg/molK_f=1.72K kg/mol), a freezing point depression of 2K is observed. The van't Hoff factor (i)(i) is:

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