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The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom:
(1) He+ (n= 2)
(2) Li2+( n= 2)
(3) Li2+( n =3)
()Be+ (n= 2)
Ans: Be+ (n= 2)
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Azimuthal quantum number defines: (1) e/m ratio of electron (2) Spin of electron (3) Angular momentum of electron (4) Magnetic momentum of electron Ans: Angular mo
Q. Define the Methods of shelf life examination? Methods of shelf life examination are sensory evaluation, chemical analysis and microbiological analysis.
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A number of ionic compounds e.g.Agcl , caF 2 BaSo 4 are insoluble in water. This is because: (1) Ionic compounds do not dissolve in water (2) Water has a high dielectri
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