Lakhmir Singh - Class 9 Chemistry Chapter 4 all questions
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Name the shell of an atom which can accommodate a maximum of (a) 2 electron.....
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(a) Which of the nuclear particles is present in the same fixed number in t.....
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Name the particles used by Rutherford in his experiment on the discovery of.....
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(a) What are cathode rays? What is the nature of charge on cathode rays? (b.....
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The subatomic particle called electron was discovered by (a) J.J. Thomson (.....
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Goldstein's experiments which involved passing high voltage electricity thr.....
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What name is given to those isotopes which have unstable nuclei and emit va.....
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Complete the following statements (a) Magnesium has 2 valence electrons in .....
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What valencies will be shown by the elements A, B, C, D and E having atomic.....
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Given that the percentage abundance of the isotope Ne2010 is 90% and that o.....
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In a sample of ethyl ethanoate (CH3COOC2H5), the two oxygen atoms have the .....
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The four atomic species can be represented as follows. Out of these, the tw.....
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Three different atoms of oxygen are represented as O168 , O178 and O188 (i).....
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