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Rutherford's α particle scattering experiment proved that atom has:
(1) Electrons
(2 )Neutron
(3) Nucleus
(4 )Orbitals
Ans: Nucleus
Effects of substituents on the acidity of phenols: Existence of electron attracting group, (for example -NO 2 , -X, - NR + 3 , -CN, -CHO, -COOH) on the benzene ring increases
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In neutral atom, which particles are equivalent: (1) P + e + (2 ) e - e + (3) e -, P + (
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Explain rules of pericyclic The pericyclic selection rules say absolutely nothing about the position of equilibrium in every case. These rules refer to rates of reactions, not
#question.types of hydrocarbon found on oil contaminited site.
Dehydration or Decarboxylation of acids by MnO/300°C (1) This reaction occurs among two molecules of carboxylic acids. Both can be the same or different. (2) If one of the c
Q. Determine mass of an electron? Ans. Three years later after J.J Thomson discovered the electron, the American scientist Robert Millikan used an oil drop experiment to accu
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