Take equal quantities of dil HCI in four test tubes. Drop Mg, Zn, Fe,Cu in each test tube. Watch carefully: Write balanced equation for each reaction.

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.

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.

Some apparatus and chemicals are given. Zn, Mg, dilute HCl, CaCO_3 test tube, water. Write the equations for the chemical reactions.

The experiments conducted by two students are given below. Experiment 1: 2mL of sodium thiosulphate solution is taken in a test tube, heated and to it 2 mL of HCl solution is added. Experiment 2: 2 mL of sodium thiosulphate solution is taken in a test tube and to it 2 mL of HCl solution is added. Write the balanced equation for the reaction.

Take cold water and Hot water in two test tubes,Add one or two drops of phenolphthalein in it Drop equally sized Mg ribbon in it: Write balanced equation for the above mentioned reaction.

Some apparatus and chemicals are given. Zn, Mg, dilute HCl, CaCO_3 test tube, water. Write the expression for the rate of the reaction.

Take hot water and cold water in two test tubes. Add one drop of phenolphthalein to both of the test tubes. Then add magnesium ribbon of the same size to this test tubes. a) Which test tubes shows the sudden formation of pink colour? b) What is the reason for the sudden formation of pink colour? c) Which gas is formed? d) Write the equation for the chemical reaction.