When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to (a) ammoniated electron (b) sodium ion (c) sodium amide (d) ammoniated sodium ion

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Ammoniated electron
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Is coaching important for the class 12 science exam?
No need. The thing is you must have basics and be upto date in reading and learning. Just need a compressuve reading of lessons as many times as possible and practice bits questions. It is enough to get good result.
Mrinal Kanti
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Which one of the following alkaline earth metal carbonates is thermally most stable?
(a) MgCO3 (b) CaCO3 (c) SrCO3 (d) BaCO3

MgCO3 is most stable alkaline earth metal because it is present in first period.Due to this its nuclear charge is less as compare to other.Due to its less nuclear charge its bond length is small thus it is more stable.
Vinay
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Which coaching institute should I join in class 11 for iit?
I suggest career endeavour or kotta classes You should also prepare by yourself too
Sumit
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Which is better for class 11, coaching or tuition class?
It depends on students level of basic knowledge . If basics of any subject is not clear than it is shear wastage of time sitting in coaching classes and student should join individual Tution with best...
Divya
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CONCEPT OF HYBRIDIZATION
Hybridisation is a hypothetical concept which explains about the formation and structure of molecules. Defination - the intermixing of atomic orbitals to produce symmetrical low energy containg hybrid...

Alkali Metal Like Sodium Displaces Hydrogen From Cold Water. Why?
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convert (i) nitromethane into dimethylamine? (ii) propanoic acid into ethanoic acid?
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Mole concept
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