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Tailing of mercury is due to formation o...

Tailing of mercury is due to formation of _______.

A

Mercurous oxide

B

Molybdenum

C

Mercuric hydroxide

D

Mercurous chloride

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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
  1. The collective name given to the elements of Gr-16 is-

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  2. Oxygen and ozone are

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  3. Tailing of mercury is due to formation of .

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  4. Which catalyst is used in contact process for manufacture of H2SO4 ?

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  5. In the reaction HCOOH + (H2SO4) gives H2O + CO sulphuric acid acts as

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  6. The acid used for etching of glass is

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  7. In which case Ozone acts as reductant?

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  8. In the reaction H2S + O3 rarr ……. The products are-

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  9. Which of the following reacts with liquid NH3 to form a mild explosive...

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  10. The bond angle inO3 molecule is

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  11. Which of the noble gases is not present in the atmosphere?

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  12. Which of the following has the highest bond energy?

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  13. Which of the compounds give carbon with sulphuric acid?

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  14. Identify the catalyst used in Decan process.

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  15. The bond angle for the hydrides of Gr-15 elements decreases from NH3(1...

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  16. The number of p - o – p bonds in phosphorous pentoxide (P4O10) are

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  17. Which of the following is not a method of preparation of ammonia?

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  18. When ammonia is passed through copper sulphate solution a deep blue so...

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  19. P4 molecule has tetrahedral structure. The / P – P – P bond angle is

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  20. Identify the catalyst used in Ostawald’s process.

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