Question

Ques 21) Raisins are dehydrated grapes Raisins swell up when
soaked up in water, this is due to osmosis. osmosis is a type of diffusion in which
the molecules of water from a solution of higher concentration move into the
solution of lower concentration through a semipermeable membrane along a
concentration gradient. Osmosis is of two types - endosmosis and exosmosis
1. what will happen if raisins are placed in sugar solution instead of water?
a) Raisins swell up
b) Raisins shrink
C) Raisins take in sugar and taste sweeter
D) Raisins spitt
2. What is the solution called when its concentration is the same as concentration
inside the cell?
a) hypertonic solution
b) isotonic solution
c) hypotonic solution
d) dilute solution
3. Which of the following statements is incorrect about osmosis?
a) it occurs only in plants
b) it occurs through a semi permeable membrane
C) the water molecules move from a region of higher concentration to a region
of lower concentration
d) The molecules move along a concentration gradient
4 10 gms of raisins were soaked overnight in pure water then they were weighed
and found to be 13 gm mass percentage of water absorbed by the main
a)
b) 30
C) 305
aj 23.07%
when a piece of iron is kept side ​

Answer 1

Answer:

Can you please mark mine as brainlest please .

Explanation:

1. Raisins shrink
2. isotonic solution
3. the water molecules move from a region of higher concentration to a regionof lower concentration.

Answer 2

Answer:

21-

1)b

2)b

3)a

Explanation:

pls mark me as the brainlist