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Q)why is the extraction of copper from pyrites more difficult than that from its oxide ore through reduction? Ans) The Standard free energy of formation of Cu2S is greater than
steric effect affecting the end product of organic compound
styx code of B4H10
Processing of Cereals Owing to the low moisture content, cereals and pulses are relatively stable during storage; and processing is not so much for preservation. However, proc
The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
Gold has a molar mass of 197g/mol. How many atoms are in the sample?Please give me procedure also. Ans) molecular wieght of gold is 197 g 1mole/g of molecule is occupies the
The main reaction during electrovalent bond formation is: (1) Redox reaction (2) Substitution reaction (3) Addition reaction (4) Elimination reaction Ans: Redox re
why cerium oxides is less soluble in water?
Q. What are the values of C and F in systems consisting of solid AgCl in equilibrium with an aqueous phase containing H 2 O, AgC(aq), Cl(aq), NaC(aq), and NO 3 (aq) prepared in th
Some important types of electrodes which are frequently used in electrochemical cells are described as follows: Metal-metal ion electrode: such type of electrodes includes a
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