Grade 12th pass10 grade science
A students takes 4 mL of distilled water in each of four test tubes I, II, III and IV, and then dissolves an equal amounts of four differents salts namely NaC1 in I , CaC1_(2) in II , MgC1_(2) in III and KC1 in IV. He then adds 8 drops of the given soap solution to each teat tube and shakes the contents of the test tube 10 times. In which test tubes will enough lather (foam) be formed?
A students takes 4 mL of distilled water in each of four test tubes I, II, III and IV, and then dissolves an equal amounts of four differents salts namely NaC1 in I , CaC1_(2) in II , MgC1_(2) in III and KC1 in IV. He then adds 8 drops of the given soap solution to each teat tube and shakes the contents of the test tube 10 times. In which test tubes will enough lather (foam) be formed?
