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which of the following has smallest heat of hydrogenation per moleA) 1-Butene B)trans-2-buteneC)cis-2-butene D)1,3-butadieneAns) D)1,3-butadiene because more stable the alkene,lesser the heat of hydrogenation per mole of double bond, 1,3-Butadiene has the most stable double bond due to conjugation.
describe the various types of velocities?
Which one of the following set of quantum numbers is not possible for 4p electron : (1) n=4, l=1, m=-1, s= +1/2 (2) n=4, l=1, m=0, s= +1/2 (3) n=
factors influencing chemical shift
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Laws of mass action were proposed by Gulberg and Waage. The rate of chemical reaction is directly proportional to the product of the active masses of the reactants (molar concentra
Preparation of frcon
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
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Saytzeff rule
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