Chemistry

Gasshol is a type of fuel where 10 – 20% ethanol is mixed with petrol.

Unsaturated hydrocarbon with carbon-carbon double bond is called Alkene.

Detergent is sodium salt of long carbon benzene sulfonic acid. Sodium lauryl sulphate  (C12H25SO4Na) is known as detergent.

The presence of partial positive charge and partial negative charge in a covalent compound is called polarity. Water is an example of polar covalent compound.

The reactor which helps control the chain reactions that occur during a nuclear fission reaction is called a nuclear reactor.

Various mineral salts are dissolved in this water. It is not easy to get a foam of soap if calcium or magnesium chloride, sulfate, carbonate or bicarbonate, etc. salts are dissolved in the water. This kind of water is called hard water.

pH meter is a device used for knowing the value pH of an unknown solution. Inserting the electrode of the pH meter in the unknown solution the value of pH can be known directly from the digital display of the pH meter.

Soap is a sodium or potassium salt of higher organic acid.