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What is tailing of mercury?...

What is tailing of mercury?

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VGS PUBLICATION-BRILLIANT-MOST IMPORTANT QUESTIONS-P - BLOCK ELEMENTS (VERY SHORT ANSWER TYPE QUESTIONS)
  1. Bond angle in "PH"(4)^(" "+) is higher than that in "PH"(3). Why ?

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  2. Why is H(2)O a liquid while H(2)S is a gas ?

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  3. What is tailing of mercury?

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  4. Write the reactions of F(2) and Cl(2) with water.

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  5. Explain the reactions of Cl(2) with NaOH.

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  6. What happens when Cl(2) reacts with dry slaked lime ?

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  7. Chlorine acts as an oxidizing agent - explain with two examples.

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  8. How is chlorine manufactured by Deacon's method ?

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  9. Explain the structure of ClF(3).

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  10. Give the oxidation states of halogens in the following : Cl(2)O

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  11. Give the oxidation states of halogens in the following : ClO(2)^(-)

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  12. Give the oxidation states of halogens in the following : KBrO(3)

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  13. Give the oxidation states of halogens in the following : NaClO(4)

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  14. Iodine is more soluble in KI than in water - Explain.

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  15. List out the uses of Neon.

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  16. Write the uses of ozone.

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  17. In modern diving apparatus, a mixture of He and O(2) is used - Why ?

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  18. Scandium is a transition element. But Zinc is not. Why ?

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  19. Why Zn^(2+) is diamagnetic whereas Mn^(2+) is paramagnetic ?

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  20. Write 'spin only' formula to calculate the magnetic moment of transiti...

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