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Consider 1:1 stoichiometric polymerisation of 1, 4-diaminobutane with sebacoyl chloride. (a) Write down a balanced chemical equation for the polymerization (b) Name the polym
The de-Broglie wavelength associated with a material particle is: (1) Directly proportional to its energy (2) Directly proportional to momentum (3) Inversely proportiona
The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is: (1) n =1, l= 1, m= -1, s= -1/2 (2) n =3, l=0, m=0, s= +1/2 (3) n =3,
Millikan and Harvey Fletchers oil-drop experiment The original experiment was performed in the year 1909 through Robert Millikan and Harvey Fletcher through balancing the downw
Molecular formula of gaseous hydrocarbons (Eudiometry) Eudiometry is a direct method for calculation of molecular formula of gaseous hydrocarbons without ascertaining the pe
how to draw molecular orbital diagram for nitrogen?
Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
Designate on an energy level diagram thee conduction and valence bands, acceptor & donor states and position of Fermi level for (i) An intrinsic semiconductor. (ii) A n-type
The frequency of one of the lines in Paschen series of hydrogen atom is2.340x10 11 Hz. The quantum number n 2 which produces this transition is: (1) 6 (2) 5
why is AAS used to determine lead content in soil
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