Acids, Bases and Salts — Chemistry STD 10 — Question

Give one example : A weak mineral acid.

A salt of sodium on treating with dilute hydrochloric acid liberates sulphur dioxide gas.

Write the following properties of ethene:
Odour

Explain the reason :
Why 'food containing iron salts' should not be cooked in aluminium utensils?

What is the common feature of electronic configurations of the elements at the end of period 2 and period 3?

Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.

State how would you prepare copper (II) oxide from
copper sulphate

The law which states that-under similar conditions of temperature and pressure the volume of gases taking part in a chemical reaction bear a simple whole number ratio".

The chemical name of the gas, which evolves in the marshy lands in the form of bubbles.

Name the process used to manufacture ammonia from its elements.