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MBD PUBLICATION-SOME P-BLOCK ELEMENTS-QUESTION BANK
- Purification of alumina is essential because :
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- Boron carbide,B4C is widely used for :
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- Which reaction cannot give anhydrous AlCl3 :
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- Which one is explosive ?
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- Which of the following is called alum ?
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- Which of the following is known as alum ?
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- The process used for purification of bauxite ore containing iron oxide...
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- In alumino-thermy, aluminium is heated with :
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- Potash alum is water soluble and ionises in aqueous solution to give :
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- Borax bead test is not given by :
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- Which is not correct ?
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- The molecules of aluminium chloride in vapour state :
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- The main factor responsible for weak acidic nature of B-F bonds in BF3...
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- Which is pure basic oxide ?
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- Oxides of group 13 elements are:
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- Which of the following cannot liberate H2 with acids ?
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- Which of the following shows variable valency ?
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- Melting point is highest for:
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- Pure H2S gas can be obtained by the action of water on :
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- Orthoboric acid when heated to red hot gives :
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