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van Arkel method is used for the refinin...

van Arkel method is used for the refining of

A

copper

B

silver

C

gold

D

titanium

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Assertion : van Arkel method is used for refining of Zinc. Reason : In this method impure is evaporated to obtain the pure metal as distillate .

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AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
  1. self reduction process cannot be used for the extraction of

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  2. which of the following is not an oxide ore?

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  3. van Arkel method is used for the refining of

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  4. chalcopyrite is an ore of

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  5. A certain gas takes half of the time to effuse out as taken by Ne gas ...

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  6. Amount of oxygen gas present in a 2 L vessel at 5 atm pressure and 27°...

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  7. Select the correct statement for isothermal expansion of an ideal gas

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  8. Standard enthalpy of formation is non zero for

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  9. Reaction for which Kp and Kc are equal

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  10. Unit of equilibrium constant (Kc) for the reaction N2(g)+3H2(g)<impli...

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  11. pH of a neutral solution at 360 K is ( Kw at 360 K is 3.6×10^(-13))

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  12. pH of aqueous solution of CH3COONa is given by

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  13. If concentration of F^- in saturated solution of CaF2 is x then solubi...

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  14. If three salts AB(s), AC(s) and AD(s) have equal solubility product th...

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  15. For one mole of a diatomic gas, the ratio of heat transfer at constant...

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  16. The equimolar salt solutions having lowest pH is

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  17. Correct expression of Kc for the reaction 2Hl(g)<impliesH2(g)+I2(g) i...

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  18. The pH of a solution at 25°C that contains 10^(-10) M hydroxide ions (...

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  19. Equal weight of oxygen and He are mixed in a closed container . The fr...

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  20. The ratio of units of van der Waals constants a and b is

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