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Which one of the following is not a redo...

Which one of the following is not a redox reaction :-

A

`CaCO_(3) rarr CaO + CO_(3)`

B

`2H_(2) + O_(2) rarr 2H_(2)O`

C

`Na+H_(2)O rarr NaOH + ( 1)/( 2) H_(2)`

D

`MnCl_(3) rarr MnCl_(2) +( 1)/( 2) Cl_(2)`

Text Solution

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The correct Answer is:
A
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MOTION-OXIDATION & REDUCTION -OXIDATION NUMBER ( EXERCISE -1)
  1. In acidic medium, reaction MnO(4)^(-) hArr Mn^(2+) is an example of -

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  2. In the reaction MnO(4)^(-)+SO(3)^(-2)+H^(+)rarrSO(4)^(-2)+Mn^(2+)+H(2)...

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  3. Which one of the following is not a redox reaction :-

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  4. The charge on cobalt in [Co(CN)(6)]^(-3) is -

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  5. Which of the following is not a redox change ?

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  6. Which of the following halogen always show only one oxidation state -

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  7. In which of the following reactions, the underlined element has decrea...

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  8. The compound in which oxidation state of metal is zero-

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  9. When potassium permanganate is added to acidulated solution of ferrous...

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  10. Which of the following examples does not represent disproportionation ...

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  11. In which of the following compounds, the oxidation state of I-atom is ...

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  12. Oxidation number of Ni in Ni(CO)(4) is-

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  13. H(2)O(2)+H(2)O(2)rarr2H(2)O+O(2) is an example of dispropotionation be...

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  14. In a reaction, H(2)O +C rarr CO +H(2)

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  15. The oxidation number of nitrogen in NH(2)OH is :

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  16. If H(2)S gas is passed through a solution of K(2)Cr(2)O(7), the colour...

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  17. In the following reaction, 4P+3KOH+3H(2)O rarr 3KH(2)PO(2)+PH(3)

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  18. Oxygen has an oxidation state of +2 in

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  19. The oxidation number of chlorine in HOCl is

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  20. O.N. of hydrogen in KH, MgH(2) and NaH respectively would be -

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