Page-2 of General Science – Chemistry

Tarnishing of the Silver Jewellery and Utensils

Silver tarnish is the discoloration that occurs on silver. Silver is not appreciably affected by dry or moist...

📅 May 22, 2013

Colors in Fireworks

Pyrotechnics is the art of making fireworks, which produce different colours when lit. The art involves the intimate...

📅 May 22, 2013

Use of Chlorine in Swimming Pools

Chlorine, Iodine and Bromine can be used for disinfecting water but not fluorine because it is too reactive....

📅 May 22, 2013

Knocking of Engines

An Internal combustion engine under load develops `pinging’ or `knocking’, where the fuel mixture starts exploding due to...

📅 May 22, 2013

Barium- and Iodine-based materials are used as contrast media in X-Ray scans. Why?

The production of X-ray images depends on the differences between the X-ray absorbing powers of various tissues. This...

📅 May 22, 2013

Zeolites

Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents. Zeolites are widely used in industry for water purification,...

📅 May 22, 2013

What are different types of Glass?

The approximate composition of ordinary glass is given by the formula, Na2O. CaO.6SiO2. The raw materials required for...

📅 May 22, 2013