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Q. Evaluate the gold number of A? The coagulation of 100 mL of colloidal sol. is completely prevented by adding 0.25g of a protective colloid 'A' to it before adding 1 mL of Na
This brings us to one thing that uniformly drives students crazy. When anything is measured in the lab, you must keep track of how accurately you can measure it. If you measure you
Q. What are Changes in Matter? Matter is able to undergo two fundamental kinds of changes. Changes that don't alter the composition of matter are called physical changes. Sta
metals iron, aluminium, copper, gold, etc. have great industrial significants. which are their important ores? important alloys of iron, aluminium and copper and their uses.
Purification of raw water for domestic use involve following process: (1) SCREENING: T he raw water is passed through screens having large number of holes where floati
Alkyl groups - IUPAC System of Naming Organic Compounds These groups involves one hydrogen atom less as compared to the alkane. These groups are named by substituting the suff
what are the tree laws of chemical reaction
Nuclei contain uncharged neutrons and positively charged protons; these two particles with about the same mass are known as nucleons. The number of protons is the atomic number of
how to memorize cation and anion
Q. Use of Halides of Boron? Boron trihalides of the type BX3 exist for all the four halogens. Boron trifluoride can be prepared on a large scale by the fluorination of boric ox
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