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P BLOCK ELEMENTS (GROUP 13 AND 14 )
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DINESH PUBLICATION-P BLOCK ELEMENTS (GROUP 13 AND 14 )-Problems of practice
- Name one ore of boron.
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- How does boric acid polymerise?
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- Explain why BF(3) exist but BH(3) does not.
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- What is the nature of boron halikles?
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- How many atoms are linked through a bridges bond?
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- Why is boric acid considered as a weak acid ?
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- What types of cations are tested by borax bead test?
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- Deos born react with water?
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- How are basic BO(3) units in boric acid linked?
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- Is H(3)BO(3) a tribasic acid?
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- Name the crystalline forms of carbon.
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- Out of diamond graphite which is (i) harder (ii) good conductor of e...
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- What is the state of hybridisation of carbon in (a)CO(3)^(2-), (b) dia...
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- How does graphite act as a lubricant?
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- Which form of carbon is used to decolorise sugar?
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- Why is graphite a good conductor of electricity?
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- What do we get when concentrated H(2)SO(4) is dropped on sugar?
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- In which form are the carbon atoms in graphite arranged?
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