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Q. What are secondary cells? Give an example?
i) They are rechargeable.
ii) The chemical reactions which take place in secondary cells are reversible.
iii) The active materials which are used up when the cell delivers current can be reproduced by passing current through the cell in opposite direction. Instance lead acid accumulator and alkali accumulator.
liquefication of gases
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Isaac Newton’s Scam Spectrum – Several ways to make it observable and how they disprove his colour theory R.S.W.Bobbette 2018 Physicists, without question, believe Is
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