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A single-effect evaporator is used to concentrate 60000 kg h-1 of a 40 wt % NaOH solution which is fed to the evaporator at 40°C. The concentrated liquid is a 55 wt % NaOH solut
In Balmer series of hydrogen atom spectrum which electronic transition causes third line: (1) Fifth Bohr orbit to second one (2) Fifth Bohr orbit to first one (3) Fourth
The electron density between 1s and 2s orbital is : (1) High (2) Low (3) Zero (4)None of these Ans:Zero
Basic radical chemical analysis?
What parts of molecular forces are expected to exist between the species in any three of the following pairs constituting mixtures? (a) He and N2 (b) Cl2 and NO- 3 (c) NH
What r the requirements for a good refractory material
Lassaigne method This is employed to detect halogen, nitrogen and sulphur. Organic compounds are fused along with dry sodium in a fusion-tube and fused mass after extraction wi
Is liquid ammonia is solvent?
Q. Beneficiation of Ores? Most of the ores available in nature contain large amounts of impurities, i.e. gangue. Direct extraction of metals from the ores by metallurgical proc
What happens when complex compounds consist of legand?
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