plzz plzz... answer it also correctly... nd don't send any invalid ans... be fast...
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plzz plzz... answer it also correctly... nd don't send any invalid ans... be fast...
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Answer:
12. (C) either metals or non metal
13. (d) J.J.Thomson
14. (C) 7
15. (a)2,8,4
16. (B) (i)and(ii)
17. (C) An atom has equal number of protons and neutrons.
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Answer:
C
D
C
A
B
C
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