LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Biology by (23.8k points)
closed by

What happens when raisins are placed in: 

(a) Water at room temperature 

(b) Water at 4°C 

(c) Concentrated sugar solution.

1 Answer

+1 vote
by (24.6k points)
selected by
Best answer

a) When raisins are placed in water at room temperature, the raisins will swell up as the water enters the cells of the raisins. This happens due to osmosis. The concentration of water is higher on the outside than on the inside of the raisins. 

b) When raisins are places in water at 4°C, they will swell up as the water enters the cells due to osmosis. But, due to the low temperature, the rate at which water enters the raisins is slower than that at room temperature. 

c) When raisins are placed in a concentrated sugar solution, the raisins will wilt and shrink. This is due to osmosis or exosmosis, wherein the water moves from the inside of the cell (less concentrated) to the outside which is more concentrated with sugar.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.