11.
12.
1. There are two common oxides of sulphur, one of which
contains 50% O2 by weight, the other almost 60%. The
weights of sulphur which combine with 1 g of Oz (fixed)
are in the ratio of
(1) 1:1 (2) 2:1 (3) 2:3 (4) 3:2
2. If u was defined as 1/4th part by weight of an atom
of Het isotope rather than the present convention of
1/12th part by weight of an atom of C12 isotope, atomic
weight of Al on this scale would be (Atomic
weight of AI, C and He on C12-scale are 27, 12 and
4.003, respectively)
(1) 27.02 (2) 26.98 (3) 27 (4) 25.98
3. An oxide of metal have 20% oxygen, the equivalent
weight of oxide is:
(1) 32
(3) 48
(4) 52
1
(2) 40
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க்ஷ ளன வர ஐந்து ஒர் ஒர் ஒர் ஒர் ஒர் ஒர் ஒர் வந் வந் வர லர் வர்த்த
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please mark it as brainliest
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