On exposure to hydrogen sulphide; moist lead (II) ethanoate paper turns by Sunday | Apr 20 | Chemistry NECO | 0 comments A. black B. blue C. green D. white E. yellow Correct Answer: Option A – black Users Also Read These:An electrical device has 50 turns in its primary…A transformer is required to supply 12 Vrms to…A transformer with 5500 turns in its primary winding…A transformer has 400 turns and 200 turns in the…Which of the following gases has a characteristic…