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In the following reaction, ZnO is respec...

In the following reaction, ZnO is respectively acting as a/an
(i) `ZnO+Na_(2)O rarr Na_(2)ZnO_(2)`
(ii) `ZnO+CO_(2)rarr ZnCO_(3)`

A

base and acid

B

base and base

C

acid and acid

D

acid and base

Text Solution

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The correct Answer is:
D
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In the following reaction, ZnO is respectively as a/an (i) ZnO+Na_(2)O rarr Na_(2)ZnO_(2) (ii) ZnO+CO_(2)rarr ZnCO_(3)

In the following reactions, ZnO is respectively acting as a/an ZnO + Na_2O rArr NaZnO_(2) ZnO+CO_(2) rarr ZnCO_(3)

2NaOH+Zn(OH)_(2) darr to Na_(2)ZnO_(2)+2H_(2)O

Zn(OH)_(2)darr+2NaOH to Na_(2) ZnO_(2)+2H_(2)O

Identify the substance oxidised and substance reduced in the following reactions : (i) ZnO(s) + C(s) to Zn(s) + CO(g) (ii) 2Na(s) + O_(2)(g) to 2Na_(2)O(s) (iii) CuO (s) + H_(2)(g) to Cu(s) + H_(2)O(l) .

ALLEN-QUANTUM NUMBER & PERIODIC TABLE-J-MAIN EXERCISE
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  2. Which of the following represent the correct order of increasing first...

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  3. The first ionisation potential of Na is 5.1 eV. The value of electron ...

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  4. The negative value of electron gain enthalpy is less for fluorine than...

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  5. Given Based on data provided, the value of electron gain enthalpy...

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  6. The order of increasing sizes of atomic radii among the elements O, S,...

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  7. The correct order of second ionisation potential of C, N, O and F is:

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  8. Correct set of four quantum numbers for the valence (outermost) electr...

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  9. Which of the following series correctly represents relations between t...

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  10. The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

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  11. In the long form of the periodic table the valence shell electronic co...

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  12. Which element has the highest first ionization energy?

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  13. The non-metal that does not exhibit posittve oxidation state is:

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  14. The electronic configuration with the highest ionization enthalpy 'A' ...

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  15. Consider the following ionization enthalpies of two elements 'A' and '...

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  16. In the following reaction, ZnO is respectively acting as a/an (i) Zn...

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  17. The group having isoelectronic species is :-

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  18. The correct order of electron affinity is :-

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  19. For Na^(+),Mg^(2+),F^(-) and O^(2-), the correct order of increasing i...

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  20. which of the following arrangements shows schematic alignment magn...

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