Question

Hey friends! plz help me to answer this...

Q A student take 5ml of distilled water in each of the four test tube named as 1,2,3,4 and then dissolved an equal amount of four different salt namely NaCl in 1, Kcl in 2, CaCl2 in 3 and MgCl2 in 4. He then adds one spoon full of a sample of soap solution to each test tube and shakes the content of the test tube equal. In which test tube will enough foam (lather) be formed

Options are...
a) only 1,2
b) only 3,4
c) only 1,3
d) 1,2,3

Find the correct option and if possible then plz explain me too... ​

Answer 1

Answer:

I think option c is right

Answer 2

Answer:

c) It is the correct answer