9.2 Nitric Acid — Chemistry STD 10 — Question

The following table shows the electronic configuration of the elements W,X,Y,Z :

Element	W	X	Y	Z
Electronic Configuration	2,8,1	2,8,7	2,5	1

Answer the following questions based on the table above:
What is the formula of the compound formed between W and X.

When a molten ionic compound is electrolysed, the metal is always formed at …………… and the non-metal is formed at …………..

Name the following :
The compound formed by the reaction between calcium oxide and silica.

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".

What do you observe when Ammonia comes in contact with the eyes of a person.

A nitrate of metal which on heating leaves behind pure metal as residue.

Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equation for the reaction from which the folllowing gas are obtained, using dilute sulphuric acid as one of the reactant : Carbon dioxide

Both brass and bronze contain copper as major constituents. Name other elements in these alloys.

Name the following:
The substance added along with aluminium in the Hall-Heroults process.