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what is made when resorsinol reacts with zinc powder?
1. Enter the symbol of a sodium ion, Na+, followed by the formula of a sulfate ion, SO42- ..Express your answers as ions separated by a comma. 2.Enter the expression 147N+a, wher
Uses of glycol
Experimental evidence for the existence of the atomic nucleus comes from: (1) Millikan's oil drop experiment (2) Atomic emission spectroscopy (3) The magnetic bending of
what are the oxides and halides of d-block elements? mention them groupwise and comment on the stability of their oxidation state.
Simple crystallisation - Purification of organic compounds This is the most general technique used to purify organic solids. It is associated with the concept that whenever
Q. What do you mean by Acid Value and Free Fatty Acids? Acid value is a measure of hydrolytic rancidity present in the sample of oil/fat. It reflects the state of freshness o
Q. What do you mean by Homologous Series? Ans. How can we adequately learn about carbon compounds when there are so many of them? The answer lies in grouping similar c
Which of the following sets of quantum numbers is not allowed : (1) n=1, l=0,m=0 s= +1/2 (2) n=1, l=1,m=0 s= -1/2 (3) n=2, l=1,m=1 s= +1/2
the properties of s,p,d,f block elements?
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