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Chemical Properties of Aromatic Nitro Compounds - Electrophilic substitution Because - NO 2 group is deactivating and m-directing, electrophilic substitution (halogenation, ni
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
Chemical Properties of Ethers Ethers are fairly stable compounds. These are not simply reacted along with alkalies, dilute mineral acids, active metals, oxidising agents within
a) During coagulation, the colloidal particles stay un-aggregated because: b) The aim during water softening is to precipitate calcium and magnesium as calcium carbonate and mag
Q. Extraction of f-block element ? As all the lanthanides occur together in nature, their extraction involves two main steps: (i) separation from one another and (ii) reducti
what is true about all rocks
The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
what is laws of chemical combination
Electro refining of Copper • Electrolyte - Aqueous copper sulphate solution (acidified) • Cathode - Pure copper metal (thin rod) • Anode - Impure copper metal (thick block) • Disso
compare the acidity between pyrole and pyrimidine
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