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.

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.

Take equal quantities of dil HCI in four test tubes. Drop Mg, Zn, Fe,Cu in each test tube. Watch carefully: Arrange metals in decreasing order or 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?

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?

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.

5ml AgNO_3 is taken in a test tube and a co-pper rod is dipped in ti: Identify the changes occuring with the copper rod and the solution?