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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
- Write the allotropic form of phosphorus.
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- Which gas is produced when white phosphorus is boiled with NaOH soluti...
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- What is the role of MnO2 In the preparation of O2 from KClO3?
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- What is the covalency of 'N' in N2O5 ?
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- Why NCl5 is not formed?
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- Is PCl5 ionic or covalent in solid state?
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- Between NH3 and PH3 which has higher bond angle?
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- Why is red phosphorous is less than reactive white phosphorous ?
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- Explain why nitrogen is inert as compared to phosphorus.
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- Balance the following equation : Cu+HNO3 rarr Cu(No3)2 + H2O +NO
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- Between NH3 and PH3 which is stronger reducing agent?
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- Complete the equation : Ca3P2+H2Oto
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- Write the increasing order of thermal stability of hydrides of Gr-16 e...
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- Why Cl2 has both oxidising and bleaching property?
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- Explain, why NH3is a complexing agent ?
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- What is anhydride of nitric acid?
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- What are the interhalogen compounds?Give examples.
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- Why is OF6 not known?
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- What happens when hydrogen lodide solution is added to lead acetate so...
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- Acidified K2Cr2O7 solution changes to when SO2 gas is passed through i...
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