5ml water is taken in 3 test tubes. Copper, sodium and magnesium of equal mass are dropped in different test tubes. Test tubes having copper and magnesium are heated: Write the observations in the heated test tubes.

5ml water is taken in 3 test tubes. Copper, sodium and magnesium of equal mass are dropped in different test tubes. Test tubes having copper and magnesium are heated: Write the equations for the reaction in the test tube in which sodium is dropped.

5ml water is taken in 3 test tubes.Copper, sodium and magnesium of equal mass are dropped in different test tubes. Test tubes having copper and magnesium are heated: Arrange these metals in the decreasing order of their reactivity.

Cold water is taken in one test tube and hot water in another one. Mg ribbon with same size is dropped in each of the test tube: In which test tube, hydrogen is formed with greater speed?

Write your observation Test tube 2 : ……………

5ml AgNO_3 is taken in a test tube and a co-pper rod is dipped in ti: Write the equations of the oxidation and reduction reactions.

Zinc piece and zinc powder are taken in two test tubes and equal amount of dil. HCl is added. In which test tube does the reaction proceed faster?

The solutions of ZnSO4 , FeSO4, CuSO4 and AgNO3 are taken in four different test tubes. Suppose, an iron nail is kept immersed in each one: In which test tube the iron nail under goes a colour change?, What is the reaction taking place here?