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Q. Show the Purification of Metals? The metals obtained by metallurgical processes still have some impurities which persist from the ore or are derived from the flux or the fue
ELECTROCHEMICAL CELLS Galvanic and electrolytic cells: The difference between potential of the two metals results in a potential difference (also called a electromotive fo
The atom of the element having atomic number 14 should have: (1) One unpaired electron (2) Two unpaired electrons (3) Three unpaired electrons (4) Four unpaired electr
what is crystallisation
why are aromatic nitro compounds pale yellow in colour
The formation of energy bonds in solids are in accordance with: (1) Heisenberg's uncertainty principle (2)Bohr's theory (3 )Ohm's law (4) Rutherford's atomic model
which among the following species have the same no of electrons in its outermost as well as penultimate shell
The ratio of area covered by second orbital to the first orbital is: (1) 1 : 2 (2) 1 : 16 (3) 8 : 1 (4) 16 : 1 Ans: 16 : 1
Why liquids rise in the cappilary tube ? Explain.
what is the name given to the impure copper obtained through this process
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