Question

Take 10 mL of water in 6 test tubes each and add different samples of substances to each test tube as shown in the given figure. Shake the test tubes vigorously for a couple of seconds and leave them undisturbed. In which of these test tubes, sample substances will remain insoluble in water? *

Answer 1

Answer:

Take 10 mL of water in 6 test tubes each and add different samples of substances to each test tube as shown in the given figure. Shake the test tubes vigorously for a couple of seconds and leave them undisturbed. In which of these test tubes, sample substances will remain insoluble in water?

A 1, 2 and 3

B 2, 3 and 4

C 3, 4 and 5

D 4, 5 and 6

Explanation:

answer is C

Answer 2

3, 4 and 5

Explanation:

1 - we know that sugar is soluble and water and forms a homogenous solution with it because it dissolves in water

2 - we know that salt is soluble and water and forms a homogenous solution with it because it dissolves in water

3 - Sand is not soluble in water and forms heterogenous solution

4 - chalk powder is not soluble in water and forms heterogenous solution

5 - saw dust not soluble in water and forms heterogenous solution

6 - washing powder s soluble and water and forms a homogenous solution with it because it dissolves in water