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Unsaturated dicarboxylic acids
The molecular formula of the simplest unsaturated dicarboxylic acid is HOOC.CH=CH.COOH This formula, however represents two chemical compounds, maleic acid and fumaric acid, which are geometrical isomers.
Methods for Manufacture of Soaps There are the following three methods for manufacture of soaps: (a) The cold process (b) The hot process (c) Modern process
classification of gels
A covalent bond is likely to be formed between two elements which: (1) Have similar electronegativities (2) Have low ionization energies (3) Have low melting points (4
Q. How to evaluate mass number? An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus. Mas
Q. In 1982, the International Union of Pure and Applied Chemistry recommended that the value of the standard pressure p o be changed from 1 atm to 1 bar. This change affects the
A tank contains 50 gal of a solution of NaCl in water (20% wt). To wash the tank, we supply fresh water at 10 gal/min and drain the tank at the constant rate of 10 gal/min. Determi
benzoic acid from benzene.i can''t see it clearly
characterstics of s block element
In an element going away from nucleus, the energy of particle : (1) Decreases (2) Not changing (3) Increases (4) None of these Ans: Increases
Saytzeff rule
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