Write a chemical test to distinguish between ethanoic acid and ethanol.

Complete and balance the following chemical equation:

${\mathrm{CH}}_4+{\mathrm{O}}_2\to {\mathrm{CO}}_2+\mathrm{\_\_\_\_\_} +\mathrm{Heat}$

Complete and balance the following chemical equations:

${\mathrm{C}}_2{\mathrm{H}}_4+\mathrm{\_\_\_\_\_}\to {\mathrm{C}}_2{\mathrm{H}}_6$

Complete and balance the following chemical equation:

$\mathrm{\_\_\_\_\_}+6.5{\mathrm{O}}_2\to 4{\mathrm{CO}}_2+5{\mathrm{H}}_2\mathrm{O}+\mathrm{Heat}$

Complete and balance the following chemical equation:

${\mathrm{C}}_2{\mathrm{H}}_2+2{\mathrm{Br}}_2\to \mathrm{\_\_\_\_\_}$

Select the formulae of alkanes, alkenes and alkynes from the following list:

${\mathrm{CH}}_4,{\mathrm{C}}_2{\mathrm{H}}_4,{\mathrm{C}}_2{\mathrm{H}}_6,{\mathrm{C}}_2{\mathrm{H}}_2,{\mathrm{C}}_3{\mathrm{H}}_8,{\mathrm{C}}_3{\mathrm{H}}_{4,}{\mathrm{C}}_4{\mathrm{H}}_{10},{\mathrm{C}}_4{\mathrm{H}}_8,{\mathrm{C}}_4{\mathrm{H}}_6$

Select the odd one among the following:

${\mathrm{CH}}_4,{\mathrm{C}}_2{\mathrm{H}}_4,{\mathrm{C}}_2{\mathrm{H}}_6,{\mathrm{C}}_3{\mathrm{H}}_8,{\mathrm{C}}_4{\mathrm{H}}_{10}$