MCQ
Inorganic graphite is
- A${B_3}{N_3}{H_6}$
- ✓${B_3}{N_3}$
- C$SiC$
- D$Fe{(CO)_5}$
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$I.$ $1$ molecule of oxygen
$II.$ $1$ atom of nitrogen
$III.$ $1 \times {10^{ - 10}}$ $g$ molecular weight of oxygen
$IV.$ $1 \times {10^{ - 10}}$ $g$ atomic weight of copper

${H_2}O\, \rightleftharpoons \,{H^ + } + O{H^ - }$ at $25\,^oC$ is.....$kJ$