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Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon Ans) We know the energy of electron goes on to become more negative as it reache
The mass number of an anion, X 3- is 14. If there are ten electrons in the anion, the number of neutrons in the nucleus of atom, X 2 of the element will be: (1) 10
Difference between activity coefficient and mean activity coefficiet
definition for entropy?
Ionic compounds do not have: (1) Hard and brittle nature (2) High melting and boiling point (3) Directional properties (4) Soluble in polar solvents Ans: Direction
Tests of phenol - Hydrocarbon (a) Aqueous solution of phenol gives a violet colouration with a drop of ferric chloride. (b) Aqueous solution of phenol gives a white precipit
A 100 gal tank contains 10 lb of water. The tank is filled by two inlet streams, one of pure water and one of pure ethanol. The flow rate of both streams is 10 gal/min. Calculate t
how can the melting point be used to determine the purity of organic compounds
Differentiate between extrinsic and intrinsic semiconductor. Obtain an expression for the carrier concentration for an intrinsic semi-conductor. Also demonstrate that Fermi level i
Full saturation test
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