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what do you mean by the terms chromogen,auxochrome,bathochrome and hyposochrome?what role do they play in relation to colour and constitution?
The concentration of hydrogen ions in solution affects the enzyme activity. Every enzyme has maximal efficiency under an optimum pH. As pH is one of the factors for the denatura
What are the examples of radiation hazards
any information of polymers
Q. Explain about Bohr atomic model? Bohr anticipated that hydrogen's single electron could orbit at only specific distances from the atom's nucleus. When the electron is in the
Q. Show the chemical properties of Aluminium? Aluminium has a very high affinity for oxygen; this is reflected in high exothermic heat of formation of Al 2 0 3 (-1676 kJ mol -
How many electrons can be accommodated in a sub-shell for which n=3, l=1: (1) 8 (2) 6 (3) 18 (4) 32 Ans: 6
A first order reaction takes 69.3 minutes for 50% completion. Set up an equation for determining the time needed for 80% completion of this reaction.
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
The ratio between kinetic energy and the total energy of the electrons of hydrogen atom according to Bohr's model is: (1) 2 : 1 (2)1 : 1 (3)1 : - 1 (4)
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