State the homologous series to which the butane belongs

Asmall amount of a solid is added to water. the observation made after fifteen minutes is shown in the figure. which of these solids has been probably added to water? a) oil b) sand c) sugar d) wood chips

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Nonmetal halogen family atmoic mass 35