CBSE Class 10 Science 2017 · Paper 31/1/C · Question 31
You have four test tubes A, B, C and D filled with aqueous solution of same concentration but of different salts. In A solution of , B solution of , C solution of and D solution of is filled. If you add equal amounts of a soap solution to each test tube and shake the contents well, in which of the test tubes will scum (insoluble substance) be obtained ?
- (a)A and B
- (b)B and C
- (c)C and D
- (d)A and D
Answer
(b) B and C
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