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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
- Why does ozone act as a powerful oxidant?
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- List the important sources of sulphur.
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- Name two poisonous gases which can be prepared from Cl2.
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- Write the anomalous properties of fluorine.
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- Mention some important uses of sulphuric acid.
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- Explain, that in SO2 the two S-O bonds are equal in length.
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- Why does NH3 form hydrogen bond but PH3 does not ?
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- How copper metal gives different products with nitric acid ?
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- Write three difference in properties of white phosphorus and red phosp...
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- Give example of compounds showing +3, +5 oxidation states for phosphor...
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- What happens when NaCl is treated with sulphuric acid in presence of M...
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- What happens when Cl2 gas is passed through hot concentrated solution ...
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- Explain, why NH3is a complexing agent ?
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- Bond angle in phosphonium ion is higher than phosphine. Explain.
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- Why does PCI3, fumes in moist air ?
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- Explain, why all the bonds In PCI5are not identical.
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- Write basicity of H3PO2,H3PO3 and H3PO4 .
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- When iron reacts with HCI, ferrous chloride is formed not ferric chlor...
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- How can you prepare CI2 from HCl and HCI from Cl2 ?
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- Arrange as indicated - HF,HCL,HBr,HI (increasing volatility order)
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