A colourless gas with a pungent smell is ev..

Question 1 Report

A colourless gas with a pungent smell is evolved when dilute hydrochloric acid is added to a sample of a salt. The gas evolved could turn

acidified K

_{2}

_{2}

_{7}

solution colourless

acidified KMnO

_{4}

solution colourless

Fe(NO

_{3}

)

_{2}

solution green

Pb(NO

_{3}

)

_{2}

paper black