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The oxidation number of B in NaBH(4) is...

The oxidation number of B in `NaBH_(4)` is

A

-3

B

`+3`

C

`+2`

D

-4

Text Solution

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The correct Answer is:
B
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CHHAYA PUBLICATION-REDOX REACTIONS -MCQ HOTSPOT (SINGLE CORRECT TYPE)
  1. In the balanced equation of the reaction aKMnO(4)+bNH(3)toKNO(3)+MnO(2...

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  2. In the reaction of KMnO(4) with ferrous ion in an acidic medium KMnO(4...

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  3. The oxidation number of B in NaBH(4) is

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  4. The equivalent mass of the oxidant in the reaction , 3CI(2)+6NaOHto5...

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  5. Cr(OH)(3)+10(3)^(-)+OH^(-)toCrO(4-)^(2-)+H(2)O+I(2): In the balanced e...

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  6. In the balanced equation for the reaction As(2)S(2)+aCIO(3)^(-)+bOH^...

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  7. In the reaction ,Fe(3)O(4)+KMnO(4)toFe(2)O(3)+MnO(2),the equivalent ma...

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  8. Which of the following reactions requires an oxidant -

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  9. In presence of HCI(aq), K(2)CR(2)O(7) oxidises tin (Sn) inot SN^(4+) ...

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  10. The amount of Na(2)S(2)O(3) to required for reducing iodine produced b...

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  11. The ratio of equivalent masses of KMnO(4) in acidic ,strong alkaline a...

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  12. The amount of H(2)O(2) required for decolourising 1 mol of KMnO(4) it ...

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  13. Fe has the lowest oxidation in

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  14. A compound of Xe and F is forme d to have 53.5% Xe .What is the oxidat...

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  15. Disproportionation reaction is not possible for-

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  16. When 1 mol of KCIO(3) accepts 4 mol of electrons the expected product ...

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  17. M^(x+)+MNO(4)^(-)toMO(3)^(-)+Mn^(2+)(1)/(2)O(2): If the 1 mol of MnO(4...

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  18. During the reaction between KCIO(3) and (COOH)(2) im acidic medium ,th...

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  19. If the oxidation number of Cr in CrO(5),K(2)CrO(4),K(2)Cr(2)O(7) and [...

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  20. The oxidation number of Pt in [Pt(C(2)H(4))Cl(3)]^(-) is-

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