You are given conc. HCl and salts of some alkaline earth metals and directed to conduct flame test and to detect the cation present in each salt.
Justify your answer.

You are given conc. HCl and salts of some alkaline earth metals and directed to conduct flame test and to detect the cation present in each salt. (a) Can you detect all the cations which are given here by this method? [CaCl_2, MgSO_4, Ba(NO_3)_2, BeCl_2, SrCl_2] (b) Justify your answer. (c) What is the mechanism of this test?

It is necessary to include iodised salt in our diet. Do you agree with this statement? Justify your answer.

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. In which experiment is the precipitate formed quickly ? justify your answer.

The order of reactivity of some metais are given. Answer the following questions by analysing it. Al gt Zn gt Cu gt Au a) Which metal is produced by the electrolysis of its molen salt? b) Matal occur in free state in nature. c) Metal produced by the self oxidation-reduction reaction. d) Metal are which is reduced by carbon.

The order of reactivity of some metals are given. Answer the following questions by analyzing.it. Al>Zn>Cu>Au : Which metals is produced by the electro lysis of its molten salt?