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NCERT EXEMPLAR-P-BLOCK ELEMENTS-P-Block Elements
- Name three oxoacids of nitrogen. Write the disproportionation reaction...
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- Nitric acid forms an oxide of nitrogen on reaction with P(4)O(10). Wri...
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- (i) White phosphorus (ii) red phosphorus and (iii) black phosphorus. W...
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- Given an example to show the effect of concentration of nitric acid on...
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- PCl(5) reacts with finely divided silver on heating and a white silver...
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- Phosphorus forms a number of oxoacids. Out of these oxoacids, phosphin...
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- Match the compounds given in Column I with the hybridisation and shape...
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- Match the formulas of oxides given in Column I with the type of oxide ...
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- Match the items of Columns I and II and mark the correct option.
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- Match the species given in Column I with the shape given in Column II ...
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- Match the items of Columns I and II and mark the correct option.
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- Assertion (A) N(2) is less reactive than P(4). Reason (R ) Nitrog...
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- Assertion (A) HNO(3) makes iron passive. Reason (R ) HNO(3) form...
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- Assertion (A) HI cannot be prepared by the reaction of KI with concent...
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- Assertion (A) Both rhombic and monoclinic sulphur exist as S(8) but ox...
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- Assertion (A) NaCl reacts with concentrated H(2)SO(4) to give colourle...
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- Assertion:- SF(6) cannot be hydrolysed but SF(4) can be. Reason:- Si...
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- An amorphous solid A burns in air to form a gas B which turns lime w...
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- On heating lead (II) nitrate gives a brown gas " A". The gas " A" on ...
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- On heating compound (A) gives a gas (B) which is a constituent of air....
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