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Which one of the following dissolves in ...

Which one of the following dissolves in hot concentrated `NaOH?`

A

`Fe`

B

`Zn`

C

`Cu`

D

`Ag`

Text Solution

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The correct Answer is:
B
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RESONANCE-D BLOCK ELEMENTS-EXERCISE-2 PART-II
  1. Iron is rendered passive by treatment with concentrated :

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  2. Lucas reagent is:

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  3. Which one of the following dissolves in hot concentrated NaOH?

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  4. The compound used for gravimetric estimation of Cu(II) is:

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  5. In the reaction,2CuCl(2)+2H(2)O+SO(2)toA+H(2)SO(4)+2HCl,A is

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  6. Sodium thiosulphate is used in photography because of its:

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  7. MnO(4)^(2-) (1 mole) in neutral aqueous medium is disproportionate to

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  8. When H(2)O(2) is added to an acidified solution of K(2)Cr(2)O(7):

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  9. The number of moles of KMn(4) that will be needed to react with one mo...

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  10. Ammonium dichromate is used in some fireworks. The green-coloured powd...

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  11. The number of moles of KMnO(4) that will be needed to react completely...

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  12. Super conductors are derived from compound of:

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  13. In photography , quinol is used as developer accoding to following rea...

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  14. Which of the following statement(s) is/are correct?

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  15. Following reaction (s) is /are involved in the iodometric estimation

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  16. The colour of the transition metal ions is//are due to:

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  17. Which of the following statement(s) is/are not correct.

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  18. Select correct statement(s).

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  19. Correct statements about transition metals are that they:

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  20. Transition elements have greater tendency to form complex because they...

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