In the bell jar setup, the rubber flap at the bottom represents which of the following parts?
Water vapours can ___ only if the outside temperature of the bell jar experiment setup is cold enough.
In an experiment three glass bell jars were set-up as shown in the diagram.
At the end of the experiment, which bell jar has the most oxygen and which has the least?
An electric bell is suspended in an airtight vacuum jar. The bottom of the jar is connected to an air pump, as shown in the given figure. The air pump can fill air in the jar.
What will happen when the switches of both the bell and the pump are pressed?