Question

What can you do,when last drop of the solution remain in the jet/nozzle of the pipet

Answer 1

Answer:

Explanation:

hold the open end of pipette from your thumb

warm your hands and cover the bulb with you palm and apply a little pressure

you will see that the drop will come out

It is due to the expansion of air in the pipette due to the warmth of your hand

i hope this will help you

Answer 2

When ast drop off solution remain in the jet/nozzle of the pipette,then the following thing can be done -

• At first strongly hold and cover the opposite end of the pipet with the thumb. The main motive here is to stop the air flow from this opposite end.

• Then rub your left palm in some cloth to make it a little hot.

• Then genty squeeze the bulb of the pipette with your warm left palm.

• Then,the water drop will be released from the pipette.

• This happens, because the air inside the pipette gets hot when we squeeze the bulb with our left palm.

• And the volume of the internal air gets increased and tries to exit from the pipette through the open nozzle. In this process the liquid gets a push by the air and makes a way out from the pipette.