heavier than air
insoluble in water
lighter than air
soluble in water
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Discussions (9)
UPWARDS DELIVERY A gas which is less dense than air can be collected by upwards delivery. Examples of gases which can be collected by this method are ammonia and hydrogen. Do you get it now
ogbeni the answer is A. cos any gas collected by upward delivery is heavier than air abi kini gbogbo oshi ten se bi
The thing is actually equivocating...
les take for e.g So2 which is heavier than air it is collected by upward displacement of air which means downward delivery due to the fact that it is heavier than air ....i dont really know why they used two equivocal sentence to describe this thing ....but to gerrrit right take the first sentence upward displacement of air=the gas heavier than air
downward displacement of air = the gas is lighter than air
myschool the answer is crrt
Lighter than air which means it is collceted by uoward delivery i.e downward displacement of air since the gas is lighter than air
DOWNWARDS DELIVERY A gas which is more dense than air can be collected by downward delivery. Examples of gases which can be collected by this method are carbon dioxide, chlorine, hydrogen chloride and sulfur dioxide. myschool is right. All the gases here are heavier than air
I'm tired of the many wrong answers on this site. PLS get your facts right before acting on 'em. FYI the answer should be A. heavier than air: Upward delivery means a corresponding downward displace,ent of air. When a gas is delivered upward, air is pushed downwards bcos the gas is heavier. Feel me?
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C. lighter than air
Explanation:
Upward delivery (or downward displacement) is a method of collecting gases that:
- Are lighter than air
- Do not dissolve in water
- Are not highly reactive
