Which metal becomes black in the presence of hydrogen sulphide gas in air?

The set of metals in order of their increasing chemical reactivity is given below: Silver, copper, lead, iron, zinc, magnesium and sodium Which of the metals becomes black in the presence of hydrogen sulphide, H_2 S ?

Select the correct answer : The metal which becomes black in the presence of H_2S gas is iron/silver.

Translate the following statements into chemical equations and then balance them. Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

Translate the following statesments into chemical equations and then balance them. Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

Translate the following statements into chemical equation and balance the equations : hydrogen sulphide gas burns in air to give water and sulphur dioxide.