You are provided with two containers made up of copper and aluminium.
You are also provided with solutions of dilute HCl, dilute `HNO_(3),ZnCl_(2) and H_(2)O`. In which of the containers these solutions can be kept?

You are provided with a container made up of aluminium. You are also provided with solutions of dil HCl, dil HNO_(3), ZnCl_(2) and H_(2)O . Out of these solutions which solution, can bekept in the aluminium container ? Name the type of reaction taking place.

You are provided with four test tubes containing sugar solution baking soda solution , tamarind solution , salt solution . Write down an activity to find the nature (acidic /basic/neutral ) of each solution .

(a) You are provided with three test tubes A,B,C which contain distilled water , acidic and basic solutions . If you are given blue litmus paper only , how will you identify the nature of the solutions in three tubes? (b) How will you prove that a given salt is a carbonate of a metal ?

You are provided with 90 mL of distilled water and 10 mL of concentrated sulphuric acid to prepare dilute sulphuric acid. How will the concentration of H_(3)O^(+) ions change on dilution?

What happens when zinc granules are treated with dilute solutio of H_(2)SO_(4), HCl, HNO_(3), NaCl and NaOH ? Also write the chemical equations if reaction occurs.

There are four test tubes containing dilute HCl, BaCl_(2),CdCl_(2) and KNO_(3) solution. Which of the following reagents will help in the identification of BaCl_(2) ?

There are four test tubes containing dilute HCl, BaCl_(2), HgCl_(2) " and" KNO_(3) solutions. Which of the following reagents will help in the identification of BaCl_(2) ?

Solution of a salt in dilute H_(2)SO_(4) or acetic and produces deep blue colour with starch iodide solution. The salt contains :