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Which one of the following is an amphote...

Which one of the following is an amphoteric oxide ?

A

`MnO_2`

B

`ZnO`

C

CaO

D

`CO_2`

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The correct Answer is:
B
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CENGAGE CHEMISTRY ENGLISH-P-BLOCK GROUP 16 ELEMENTS - THE OXYGEN FAMILY-Exercises Single Correct
  1. Which of the following acts as pickling agent ?

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  2. Non-metals combine with oxygen to form usually

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  3. Which one of the following is an amphoteric oxide ?

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  4. How is ozone formed in the upper atmosphere? State its importance. Wha...

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  5. On heating ozone, its volume.

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  6. Which requires catalyst ?

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  7. In the reaction, 2 KI + H2 O + O3 rarr 2 KOH + O2 + A The compound...

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  8. Sulphur does not exist as S2 molecule because

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  9. Excess of PCl5 reacts with conc. H2 SO4 gives

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  10. The element evolving two different gases on reaction with conc. H2 SO4...

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  11. Define Rancidity. Give two measures to prevent it.

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  12. The correct order of the O-O bond length in O2, H2O2 and O3 is

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  13. Which of the following is not correct ?

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  14. The number of sigma and pi bonds in peroxydisulphuric acid are, respec...

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  15. Tailing of mercury test can be used for which of the following gas ?

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  16. Which of the following solutions does not change its colour on passing...

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  17. The function of Fe(OH)3 in the contact process is

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  18. The acid used in lead storage cells is

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  19. Hydrolysis of one mole of peroxodisulphuric acid produces

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  20. All the elements of oxygen family are

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