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what is the effect of cement refactory on wear and tear
Q. Show the Oxoacids of Sulphur? As you know, oxoacid is an acid in which the ionisable hydrogen atom is bonded, through an oxygen atom to the central nonmetal atom, e.g., E-OH
Number of protons, neutrons and electrons in the element 231/89 y is: (1) 89, 231, 89 (2) 89, 89, 242 (3) 89, 142, 89 (4) 89, 71, 89 Ans: 89, 142, 89
Q. Show the Liquation in purification of metals? Crude tin, bismuth and lead are purified by liquation. In this process, the impure metal is placed at the top of a sloping hear
Scale up At this phase, sensory analysis consists of tests that compare the production samples with the optimized product. Depending on the resources available, either consume
concentration cell with out transference +salt bridge
Solid xenon forms crystals with a face centered unit cell that has an edge of 620 pm. 1. calculate the atomic radius of xenon. 2. calculate the packing efficiency if xenon. So
The nucleus of an element contains 9 protons. Its valency would be : (1) 1 (2) 3 (3) 2 (4) 5 Ans: 1
Why can butyllithium (BuLi) not be used for deprotonation? The direct alkylation of enolates is often not very efficient for a preparative synthesis due to problems with furthe
Hydride generation method: The hydride generation method of sample enhances the detection limits by a factor of 10 to 100 by converting the analyte element into a volatile hyd
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