Take solutions of some juices of fruits, vegetables, cold drinks and various solutions in beakers test tubes and test them with blue and red litmus papers. List out results in the table, by marking (?) in the relevant column if the colour changes, put (?) if the colour is unchanged.

If a solution of a substance changed red litmus paper into blue, guess the colour of it in methyl orange indicator.

Collect some salt substances with the help of your teacher. Make their salt solutions. Test the salt solutions with blue litmus and red litmus papers. Classify these salts and record your observations in the table.

When drops of lemon juice are put on blue litmus it turns red. What will happen if you put some drops of soap solution on the same position on litmus paper?

Latha take some quantity of powder of a substance in a test tube. Heated it with spirit lamp. A gas was liberated. She sends the gas into another test tube. The colour of solution in the second test tube turned into milk white. Which substance was heated? Which gas is liberated? What was the solution taken in second test tube? Which type of chemical reactions involved the experiment?

Rearrange the following sentences is a correct order (i)Collect the white ash and dissolve it in a little water(ii) The red litmus turns into blue colour and so the solution is basic in nature. (iii) Burn a small piece of Magnesium ribbon by holding it with tongs(iv) Touch the solution formed and test this solution with blue litmus and red litmus.

There are 3 substances in test tube A, test tub1e B and test tube C. B and C can form A. B and C can form H_2 gas. A, Band C gives different colours ,with universal solution. B turns blue litmus into red but not A and C. What would be A, B and C ?

Four students were given colourless liquids A,B,C of water, lemon juice and a mixture of water and lemon juice respectively. After testing these liquids with pH paper, following sequences in colour change of pH paper were reported. Blue, Red and Green Orange, Green and Green Green, Red and Red Red, Red and Green