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p -Block elements - ll — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
Chlorine dioxide is best prepared by passing dry
  • A
    Chlorine gas over hot $HgO$
  • B
    Chlorine and oxygen gas over hot pt catalyst
  • C
    Hydrogen chloride and oxygen over silver oxide
  • ✓
    Chlorine over hot silver chlorate
✓

Answer

Correct option: D.
Chlorine over hot silver chlorate
d
Chlorine dioxide is best prepared by passing dry Chlorine over hot silver chlorate.

Reaction: $2 AgClO _3+\underset{\text { (Dry) }}{ Cl _2} \rightarrow 2 AgCl +2 ClO _2+ O _2$

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Arrange acidity of given four compounds in decreasing order :

$(I)$  $\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
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$(III)$ $CH \equiv CH$

$(IV)$ $CH_3-CHO$

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