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What is tailing of mercury ?...

What is tailing of mercury ?

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### Step-by-Step Solution: 1. **Definition of Tailing of Mercury**: - Tailing of mercury refers to the phenomenon where mercury loses its meniscus and adheres to the glass surface when ozone is passed through it. 2. **Chemical Reaction Involved**: - When ozone (O₃) is introduced to mercury (Hg), a chemical reaction occurs. The reaction can be represented as: \[ ...
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Why a black suspension of lead (II) sulfide in water turns white when ...

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  2. What happens when ozone and hydrogen peroxide are allowed to react wit...

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  3. What is tailing of mercury ?

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  4. What is ozonolysis ?

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  5. Why is O-O bond length in ozone (128 pm) more than in O2 (122 pm)?

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  6. Why ozone is used in improving the atmosphere of crowded places such a...

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  7. Write balanced chemical equations for the preparation of SO2 from a s...

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  8. Why quicklime is not used for drying SO2?

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  9. What is produced when SO2 is dissolved in water?

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  10. Name one substance which can be used as a catalyst in the formation of...

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  11. Write one chemical equation to show that SO2 acts as a reducing agent...

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  12. What happens when SO2 reacts with Cl2 : (i) in presence of sunlight....

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  13. SO2 acts as a bleaching agent. How?

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  14. Dry SO(2) does not bleach dry flowers because

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  15. Why does SO2 exhibit bleaching action only in presence of water?

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  16. What happens when H2S reacts with SO2 ?

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  17. What happens when SO2 is passed through caustic soda solution ?

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  18. What is the bond angle in SO2 ?

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  19. State the name of anhydride of H2SO4.

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  20. Why sulfuric acid is described as king of chemicals ?

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