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Answer Posted / guest
Air is removed from the lamp, otherwise the filament will be
oxidized due to the oxygen present in the air.
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Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?
Why is ammonium hydroxide added to the brass solution?
When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason?? When a cool glass rod is suddenly heated, it cracks. Why?
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What is modern definition(iupac) of ph?
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