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Uses of pyrogallol (a) As a developer in photography. (b) As a hair dye. (c) In medicine of skin diseases like eczema. (d) For absorbing none reacted oxygen in gas ana
The energy of a radiation of wavelength 8000 Å is E 1 and energy of a radiation of wavelength 16000 Å is E 2 . What is the relation between these two: (1) E 1 =6E 2
The ph of an aqueous solution of Ba(OH)2 is 10 if the ksp of Ba(OH)2 is 1*10^-9 then the concentration of Ba+2 ions in the aqueous solution is Ans) [OH(-)] = 10^(-4) 2.
Indicate whether the following thermal reactions are allowed concerted reactions by the Woodward-Hoffmann criteria. Classify the reaction according to type. On the basis of
how to neutralize sodium carbonate colourless soloution what is the soloution
what are the chemical properties of protium, deuterium and tritium.
Aufbau principle is obeyed in which of the following electronic configurations: (1) 1s 2 2s 2 2p 6 (2) 1s 2 3p 6 3s 2 (3) 1s 2 3s 2 3p 6
The charge of an electron is -1.6 x10 -19 C. The value of free charge on Li + ion will be: (1) 3.6x 10 -19 c (2) 1x 10 -19 c (3) 1.6 x 10 -19
Illustrate and demonstrate that, for correct mass balance, relative amount of two co-existing phases or micro constituents should be as given by lever rule. The lever rule giv
Point imperfection: They are imperfect point-like regions in the crystal. One or two atomic diameters are the typical size of a point imperfection. A substitution impurity and an
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