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Quantitative determination of a number of ions like Cu, Ag, Zn, Fe, Ni, Co, Cd etc. has been done by using 1.2.3-benztiazole as precipitating agent under different experimental conditions. This is just one such reagent out of many known ligands. Specific reagents like dimethylglyoxime are used to isolate red Ni(I1) complex and cupferron is used for the estimation of Fe, Ti etc..
n-propyl acetate (bp 102 C) evaporates rapidly when exposed to air, but water(bp 100C)does not. Explain why
As compared to covalent compounds, electrovalent compounds generally have: (1) Low melting points and low boiling points (2) Low melting points and high boiling points (3
How to synthesize xylene? How many methods(ways) to synthesize xylene?
what is silver silver electrode
Q. Define the Planck constant? The energy of a photon ( E photon) of a certain frequency (violet) is able to be calculated by using the following equation in which h represen
Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d have the same energy (2) 4s has a higher energy than 3d (3)4s 1 is
Q.Briefly describe about Nitrogen? Ans. Nitrogen is a gas that makes up approximately 79% of the atmosphere. It exists in the form of the diatomic molecule N 2 . In this f
Properties of Catechol 1. Catechol is a colourless crystalline solid, its melting points is 105°C. 2. Catechol is soluble in water. 3. Catechol is exaggerated on exposure
The number of orbitals in 2p sub-shell is : (1) 6 (2) 2 (3) 3 (4) 4 Ans: 3
Q. Iron chloride forms various solid hydrates, all of which melt congruently. The temperatures t of aqueous solutions of various compositions that are saturated with respect to a s
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