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The oxidation of N is highest in ...
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Which of the following is least basic? ...
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At high temperature nitrogen combine with calcium carbide (CaC2) to give ...
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Nitrogen is used to fill electric bulbs because ...
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Nitrogen does not form NCl5 while other members of the group (P, As..) does because ...
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The commercial preparation of nitrogen ...
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The laboratory method of preparation of nitrogen is ...
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Which of the following reactions on NH3 gives nitrogen? ...
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When heated in air Boron forms ...
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The order of the increasing acidic strength of BF3, BCl3, BBr3 is ...
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The shape and hybridization in BF3 is ...
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Boron when heated with carbon forms ...
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Boron reacts with NaOH to form ...
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Boron compounds behave as lewis acids because of their ...
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Boron trioxide can be reduced to Boron with ...
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Boron can be prepared by ...
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Bond order for F2 is ...
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Which of the following is diamagnetic? ...
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Which of the following is most stable? ...
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The molecular orbital configuration of O2 is ...
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The molecular orbital configuration of N2 is ...
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Which of the following is false concerning a covalent bond? ...
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The compound which contains ionic as well as covalent bonds is ...
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Covalent molecules have low melting points because ...
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The strength of C-C bond in C2H4 is ...
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The no. of σ and π bonds in C2H4 is ...
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The strength of σ bond ...
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Lateral overlap of p-orbitals leads to the formation of ...
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σ bond may be formed by ...
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Which of the following properties of emulsions differ from colloidal sols? ...
asked2009-04-15 21:12:45