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Give one use of lichen...

Give one use of lichen

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`ClF_(5)` is used as fluorinating agent for the production of `UF_(6)` by reacting with U-235
`U(s) +3ClF_(5)(l) to underset("Uranium hexafluoride") (UF_(6)(g)) + 3ClF(g)`
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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Questions From Board Examinations
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  2. NaOH gives disproportionation reaction with

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  3. Give one use of lichen

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  5. Sulphur vapours exhibit some paramagnetic behaviour. Explain.

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  6. Complete the following chemical equations : (i) P(4) (s) +NaOH (aq) ...

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  7. In the structure of HNO(3), why is N-O bond (121 pm) shorter than N-OH...

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  8. XeF(2) has linear structure and not a bent structure , Given reason .

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  9. Red phosphorus is less reactive than yellow phosphorus because

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  10. On the basis of VSEPR theory, prefict the shapes of the following mole...

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  11. Why helium and neon do not form compounds with florine?

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  12. Ka(1), Ka(2) and Ka(3) are the respective constants for the following ...

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  13. Give the decreasing order of dipole moments of HF,HCI,HBr, and HI.

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  14. (a) Why does NO2 dimerise ? (b) In what way can it be proved that PH...

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  15. Red phosphorus is ...............reactive than white phosphorus as red...

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  16. NF(3) is not hydrolysed while NCl(3) can be readily hydrolysed. Explai...

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  19. The stability of +5 oxidation state decreases down the group 15 of the...

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