111. P₄O₁₀ is an anhydride of

1. 1. H₂P₂O₇

   
   
   

   2. H₃PO₄

   
   
   

   3. HPO₃

   
   
   

   4. H₃PO₃

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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112. The acidic character of dioxides of members of oxygen family decreases in the order

1. 1. PoO₂ > TeO₂ > SeO₂ > SO₂

   
   
   

   2. TeO₂ > PoO₂ > SeO₂ > SO₂

   
   
   

   3. SO₂ > SeO₂ > TeO₂ > PoO₂

   
   
   

   4. SeO₂ > SO₂ > TeO₂ > PoO₂

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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113. The structure of ozoneis

1. 1. Pyramidal

   
   
   

   2. Tetrahedral

   
   
   

   3. Octahedral

   
   
   

   4. Angular

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

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114. The conversion of atmospheric nitrogen into compounds is called

1. 1. Nitrogen conversion

   
   
   

   2. Nitrogen absorption

   
   
   

   3. Nitrogen fixation

   
   
   

   4. Nitrogenation

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

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115. Emery consists of impure

1. 1. Iron

   
   
   

   2. Corundum

   
   
   

   3. Carborundum

   
   
   

   4. Graphite

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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