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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

Verified by Experts

The correct Answer is:
B
`Zn+2NaOHtoNa_(2)ZnO_(2)+H_(2)`
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Additional Problems for Self practice (APSP)
  1. A compound of iron exists as a dimer in vapour state. It is hygroscopi...

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  2. Fe is made passive by :

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

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  4. Hot copper wire reacts with oxygen to produce:

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  5. A compound is yellow when hot and white when cold. The compound is:

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  6. At 300 C FeCl(3):

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  7. When FeSO(4) is strongly heated, the number of acidic gases produced i...

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  8. On heating ZnCl(2).2H(2)O, the compounds obtained is:

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  9. On heating KMnO(4), one among the following is not formed:

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  10. Reaction of KMnO(4) in neutral or very weakly alkaline solution can be...

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  11. KMnO(4) in excess on treatment with concentrated H(2)SO(4) forms a com...

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  12. Which of the following statement is wrong?

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  13. The image on an exposed and developed photographic film is due to

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  14. The yellow colour solution of Na2CrO4 changes of orange red on passin...

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  15. What happens when a molten mixture of K(2)FeO(4) and K(2)CrO(4) is aci...

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  16. Why silver chloride is used in photochromic spectacles?

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  17. In which of the following reactions, reaction of silver with the given...

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  18. Which of the following can be employed for the conversion of potassium...

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  19. Reaction of potassium chromate and CuSO(4) in aqueous solution produce...

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  20. Predict the product formed and its colour: When MnO2 is fused with KO...

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