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Q. Briefly explain about Alloys? Ans. Pure metals are malleable. Metals that are harder, stronger and less malleable are sometimes required. These characteristics may be a
Potassium permanganate is prepared from pyrolusite (MnO 2 ) . Pyrolusite is fused with KOH in the presence of atmospheric oxygen or an oxidising agent like potassium nitrate or po
Refining of petroleum: Petroleum (crude) extracted from earth's crust is an intimate mixture of many organic compounds. Crude petroleum needs to be purified and its components
Since fluorine is very electronegative as a result hydrogen develop a very positive character. As a result the H-bonding is very tough because of large difference in electronega
PERIODIC TABLE and PERIODICITY OF ELEMENT
Calculate the amount of heat required to raise the temperature of an 58 sample of water from 34c to 64c. Express your answer using two significant figures
Write a list of reduction half reactions for... Fe, Fe+3 Cu, Cu+1 Pb, Pb+2
why do transition metals form complex salts
Q. What are the types of emulsions? Emulsions can be of three types: 1) Temporary emulsion: These require vigorous shaking just before they are used, as they separate out e
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
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