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Page-22 of Archives: May, 2013

Why Hydrogen Peroxide is Kept in Dark Plastic Bottles?

The chemical structure of hydrogen peroxide is shown below: Due to the Oxygen-Oxygen link, Hydrogen peroxide breaks down slowly at room temperature, but quickly in presence of heat,...

May 22, 2013

Copper & Brass cleaning by Vinegar

Copper is a metallic element; brass is an alloy or mixture of the metallic elements copper and zinc. The surfaces of copper and brass items tamish with prolonged...

May 22, 2013

Free Flowing Salts and Desiccants

Calcium silicate (CaSiO3), a commonly used anti-caking agent, added to e.g. table salt, absorbs both water and oil. This white powder has the incredible ability to absorb liquids...

May 22, 2013

Ice Cubes are Cloudy on the Inside

Water contains both dissolved gases (e.g., oxygen) from the atmosphere and dissolved minerals (e.g., calcium and magnesium salts). The presence of these substances affects the temperature at which...

May 22, 2013

Honey does not get spoilt. Why?

There are three reasons: Honey is acidic in nature Osmotic Effect Production of Hydrogen Peroxide Honey is processed by honey bees as their food. The raw material for...

May 22, 2013

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 air that is free from ozone, halogens, ammonia, and sulphur...

May 22, 2013

Colors in Fireworks

Pyrotechnics is the art of making fireworks, which produce different colours when lit. The art involves the intimate mixing of a fuel (burnable material) that is in a...

May 22, 2013

Low Pressure and High Pressure Sodium Vapour Lamp

There are two types of Sodium Lamps — Low-Pressure (LPS) High-Pressure (SON). Sodium lamp performance is directly related to the gas pressure inside the arc cylinder. Increasing arc...

May 22, 2013

Difference between Sodium Vapor Lamp and Mercury Lamp

Difference Sodium Vapour Lamp Mercury Lamp Light Source Works by electric discharge (passage of electricity through sodium vapours at high/low pressure) Works through the combined effect of electric...

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. Chlorine is often chosen simply because it is cheap, readily...

May 22, 2013

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