Questions:
1. While performing an experiment to determine the percentage of water absorbed by raisins, the following data was obtained:
Mass of water taken in the beaker = 50 g
Mass of raisins before soaking them in water = 5 g
Mass of raisins after soaking in water for 2 hours = 8 g
The percentage of water absorbed by raisins would be
(a) (8-5)g/3g × 100
(b) (8-3)g/3g × 100
(c) (8-5)g/8g × 100
(d) (8-5)g/5g × 100
2. Each of the three beakers...
Questions:
1. In a hypertonic solution like 1 M glucose solution when living plant cells are kept, there occurs excessive loss of water from plant cells after some time. The phenomenon is called
(a) osmosis.
(b) exosmosis.
(c) endosmosis.
(d) plasmolysis.
2. What is the correct formula to calculate percentage of water absorbed by raisins, if W1 is initial weight, W = Weight of water absorbed by raisins?
(a) W1 / W x 100
(b) W / W1 x 100
(c) W ...
Questions:
1. When a living cell is immersed in a solution, it has same concentration as that of the outer solution. What is the solution called?
(a) Hypotonic
(b) Hypertonic
(c) Isotonic
(d) All of these
2. When the raisins are put in water, after some time these swell up due to
(a) exosmosis.
(b) endosmosis.
(c) transpiration.
(d) plasmolysis.
3. The movement of the substances into and out of the living cell depends upon the property of
...