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which of the following is not a characteristic of plunck''s quantum theory of radiation? A) Radiation are associated with energy B) A body can emit less or more than a quantum of e
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
explain why carbon tetra-chloride does not dissolve in water?
advantages and disadvantages of surfaces tension
Q. What do you mean by Mixtures of Matter? A mixture is a mixture of two or more pure substances in which each substance retains its individual properties. Concrete mainly ro
Uses of Urea or Carbamide - Carboxylic Acids (a) Urea is used mainly as a nitrogen fertilizer. It has 46.4% nitrogen. (b) Urea is used in the manufacture of formaldehyde-ure
Short note on synthetic rubber. S ol. Synthetic rubber: main types of synthetic rubbers: 1. Styrene rubber: Buna-S; Bu-Butadiene; Na=sodium; = Styrene
Why alcoholic acidity of maids is expressed as H2SO4?
Trans -Isomer of a substance is more stable than Cis-Isomer.
The electronic configuration (outermost) of Mn +2 ion (atomic number of Mn= 25 ) in its ground state is: (1) 3d 5 , 4s o (2) 3d 4 , 4s 1 (3
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