Question

A student took four test tubes P, Q, R and S and filled about 8 mL of distilled water in each. After that he dissolved an equal amount of Na2SO4 in P, K2SO4 in Q, CaSO4 in R and MgSO4 in S. On adding an equal amount of soap solution and shaking each test tube well, a good amount of lather will be obtained in the test tubes: (1)
(a) P and Q
(b) P and R
(c) P, Q and S
(d) Q, R and S

Answer 1

Explanation:

A student took four test tubes P, Q, R and S and filled about 8 mL of distilled water in each. After that he dissolved an equal amount of Na2SO4 in P, K2SO4 in Q, CaSO4 in R and MgSO4 in S. On adding an equal amount of soap solution and shaking each test tube well, a good amount of lather will be obtained in the test tubes: (1)

(a) P and Q

(b) P and R

(c) P, Q and S✔️✔️

(d) Q, R and S

Answer 2

$\huge{\underline{\underline{\mathfrak{Answer}}}}$

(c) P, Q and S✅✅

$\huge{\underline{\underline{\mathfrak{Thank You}}}}$