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Non-benzenoid aromatics and Heterocyclic compounds
There are aromatic compounds that have structural units which are not same from benzenoid type and are termed as Non-benzenoid aromatics for illustration Tropolone, azulene etc.
(b) Heterocyclic compounds : Cyclic compounds consisting of one or more hetero atoms (for example O, N, S etc.) in the ring are known heterocyclic compounds.
classification of lubricants
The uncertainty in the position of a moving bullet of mass 10 gm is 10 -5 m . Calculate the uncertainty in its velocity: (1) 5.2 x 10 -28 / sec (
The energy of the electron in the first orbit of He + is -871.6x 10 -20 J . The energy of the electron in the first orbit of hydrogen would be : (1) -871.6 x10 -20 J
what is allotropy
Maximum electrons in a d -orbital are: (1) 2 (2) 10 (3) 6 (4) 14 Ans: 10
cis-2-butene is a symmetrical alkene Because cis-2-butene is a symmetrical alkene, it reacts to give the similar product in either oxymercuration- reduction or hydroboration-ox
Write chemical tests to distinguish among: a) Phenol and Benzoic acid b) Propanal and propanone c) Formic acid and Acetic acid
Explain construction & working of calomel electrode.
Physical Properties of Oxalic Acid (a) Oxalic Acid is a colourless crystalline solid. It contains two molecules of water as water of crystallisation. (b) The hydrated form h
properties and uses of glycol?
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