Which of the following gases can be collected by the method of downward delivery? by Sunday | Oct 15 | Chemistry JAMB | 0 comments A. Chlorine B. Oxygen C. Ammonia D. Hydrogen Correct Answer: Option A – Chlorine Users Also Read These:The demand curve for a commodity is downward sloping…A gas that is collected by upward delivery is likely to be?A downward sloping demand curve means that?Downward-growing pinnacles that hang from the roofs…A form of carbon used for absorbing poisonous gases…