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When Nacl is dissolved in water the sodium ion becomes:
(1) Oxidized
(2) Reduced
(3) Hydrolysed
(4) Hydrated
Ans: Hydrated
On analysis, a certain compound was found to contain iodine and oxygen 254 gm in the ratio of of iodine and 80 gm of oxygen. The atomic mass of iodine is 127 and that of oxygen
History of periodic table
i) Define a membrane in a process engineering context. Two of the main desired attributes of membranes are high permeability and high selectivity. Define permeability and select
For the energy levels in an atom, which one of the following statements is correct: (1) There are seven principal electron energy levels (2) The second principal energy leve
Which of the following statements does not form part of Bohr's model of the hydrogen atom: (1) Energy of the electrons in the orbit is quantized (2) The electron in the orbi
x gram of metal reacts with chlorine to form y gram of metal chloride.calculate equivalent mass of metal.
1st A group because the oxides and hydrides are alkaline in nature.
what is allotropy
what is the equivalent weight of Ca in Ca3(PO4)2?
the value of plank''s constant
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