The p-Block Elements questions
1863 published questions with worked solutions.
- The by product formed in the reaction is ROH + PCl_5 RCl + +
- The bond dissociation energy of B - F in BF_3 is 646 kJ ,mol^ -1 , whereas that of C - F in CF_4 is 515 kJ ,mol^ -1 . The correct...
- Oxidation number of sulphur in Caro's acid is
- Superphosphate of lime is a mixture of:
- Which will react with acid and alkalies both i.e., (amphoteric)
- At high temperature nitrogen combines with CaC_2 to give:
- Chlorine reacts with 'X' to form bleaching powder. 'X' is
- The active constituent of bleaching powder is:
- Bleaching powder is obtained by interaction of Cl_2 and:
- A gas reacts with CaO and not with NaHCO_3 is:
- Bleaching powder is obtained by the interaction of chlorine and
- What is A in the following reaction LiAlH_4 + PCl_3 A + AlCl_3 + LiCl
- Which of the following compounds is used in gun powder?
- The basic character of hydrides of the 15 group elements decreases in the order
- Orthophosphoric acid on heating gives
- Which oxide of nitrogen is obtained on heating ammonium nitrate at 250^ C ?
- Nitrous oxide is
- Brown color in HNO_3 can be removed by
- The reaction of P_4 with X leads selectively to P_4O_6 . The X is
- In case of nitrogen, NCl_3 is possible but no NCl_5 while in case of phosphorus, PCl_3 as well as PCl_5 are possible. It is due to
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