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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
- Express 1272 in roman numbers.
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- Match the species given in Column I with the shape given in Column I...
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- Express 1273 in roman numbers.
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- In the following questions a statement of assertion followed by a stat...
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- Assertion : HNO3 makes iron passive. Reason : HNO3 forms a protective ...
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- Unlike HCl, why HBr cannot be prepared by the action of concentrated s...
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- Assertion : Both rhombic and monoclinic sulphur exist as S8 but oxygen...
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- Which of the following reacts with NaNO2 + HCl at 273-278 K to give al...
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- Assertion : SF6 cannot be hydrolysed but SF4 can be. Reason : Six F at...
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- Which halogen has a tendency to form cations?
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- Give the disproportionation reaction of H3PO3.
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- Why ICI is more reactive than I2 ?
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- Name the halogen which forms only one oxoacid and write the formula of...
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- Arrange H2O, H2 S, H2 Se and H2 Te in order of their increasing acidic...
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- Why does R3P=O exist but R3N=O does not? (R= alkyl group)
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- Comment on nature of two S-O bond formed in SO2 molecule. Are the two ...
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- Draw the structures of SF4.
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- Draw the structure of XeF2, XeF4 and XeF6.
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- Give reasons for the following : SF6 is not readily hydrolysed.
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- Why does sulphur in vapour state exhibit paramagnetic character ?
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