D H2520r (c) H25207 (d) H2S20 10. In a reaction, Na2S203 is converted to Na2S406. The equivalent weight of NazS203 for tnis reaction is (mol. wt. of NazS203 = M) (a) M (b) M/4 (c) M/2 (d) M/3 11. Among the following, the incorrect statement is: (a) Diamond and graphite are two allotropes of carbon. (b) In diamond, each carbon is sp3 hybridized. v (c) In graphite, each carbon is sp2 hybridized. (d) Graphite shows high electric conductivity in one direction only.