Metallurgy — Chemistry STD 10 — Question

What is eaten ation? Why carbon shovv rnaximurn tendency of catenation?

Explain, all alkalis are bases but all bases are not alkalis.

Mention three important uses of nitric acid. Give the property of nitric acid involved in the use.

Zinc metal and aluminium metal are amphoteric in nature. What do you understand by the statement? Support your answer by writing fully balanced chemical equations.

How can this impurity be removed?

Define the following terms giving one example in each case (i) An acid (ii) A base (iii) An acid salt.

Name the salt which on hydrolysis forms
(a) Acidic
(b) Basic acid
(c) Neutral solution. Give a balanced equation for each reaction.

Solution A is a strong acid
Solution B is a weak acid
Solution C is a strong alkali
(i) Which solution contains solute molecules in addition to water molecules?
(ii) Which solution will give a gelatinous white precipitate with zinc sulphate solution? The precipitate disappears when an excess of the solution is added.
(iii) Which solution could be a solution of glacial acetic acid?
(iv) Give an example of a solution which is a weak alkali.

Give two balanced reactions of each type to show the following properties of sulphuric acid:
Oxidising agent

Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write one equation each to illustrate the properties of sulphuric acid mentioned above.