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Mohd 22/09/2019 in CBSE/Class 8/Science/Force and Pressure
When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to
(a) pressure of water.
(b) gravity of the earth.
(c) shape of rubber bulb
(d) atmospheric pressure
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Mukul 22/09/2019 in CBSE/Class 8/Science/Force and Pressure
Fill in the blanks in the following statements.
(a) To draw water from a well we have to _________ at the rope?
(b) A charged body ________ an uncharged body towards it?
(c) To move a loaded trolley we have to _________ it?
(d) The north pole of a magnet ________ the north pole of another magnet?