Write true or false for the statement. Rewrite the false statement correctly:

Lampblack, soot, and kajal all are same.

Write true or false for the statement. Rewrite the false statement correctly:

Adsorption is a surface phenomenon.

Write true or false for the statement. Rewrite the false statement correctly:

The word 'graphite' comes from a Greek word meaning 'to write'.

Write true or false for the statement. Rewrite the false statement correctly:

Charcoal has a higher calorific value than wood.

Write true or false for the statement. Rewrite the false statement correctly:

Charcoal is a good adsorbent.

Complete and balance the following equation:

$\mathrm{C}+{\mathrm{H}}_2\mathrm{O} \stackrel{}{\to }$

Complete and balance the following equation:

${\mathrm{Fe}}_2{\mathrm{O}}_3+\mathrm{C} \stackrel{}{\to }$

Complete and balance the following equation:

${\mathrm{SiO}}_2+\mathrm{C} \stackrel{}{\to }$

Complete and balance the following equation:

${\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11} \stackrel{\mathrm{Conc}. {\mathrm{H}}_2{\mathrm{SO}}_4}{\to }$