Question

Student takes 5 ml of a tap water in 4 test tubes and label them as a b c and d then he are the same amount of salt Potassium Chloride in test tube a calcium chloride in be sodium chloride in C and magnesium chloride India at a few drops of soap solution to the 4 test tubes in which of the 4 test 2 formation of scum is observed option A and B option B B and C option c b and D option a and d

Answer 1

Answer:

Explanation:

Activity 22.1Write the changes from the primitive earth till the formation of first cells.Follow the example and fill in the blanks.Formation of light and heavy molecules > Combination of atoms to form molecules>_ _ _ _ _ _ _ _ _ _ >Hot dilute soup>_ _ _ _ _ _ _ _ >Protobionts>_ _ _ _ _ _ _ _ ​

X

C

CS

C

C

C

CS

CS

SC

CS