Ur ans is option d
addition
Answer:
carbon dioxide is a gas so it isn't collected over water.
Explanation:
it works for insoluble gases such as hydrogen,or gases that do not dissolve easily in water such as ammonia and chlorine are readily soluble in water and are not collected this way.
hope it is helpful for you.
Answer
I think it might be B
Explanation
No, since they are the strongest type of ray only elements that are dense can block them.
