Practice MCQ Questions and answers on Chemistry-GK

One end of a match is coated with a material that can be ignited by frictional heat generated by striking the match against a suitable surface. The coated end of a match, known as the match "head," contains either phosphorus or phosphorus sesquisulfide as the active ingredient and gelatin as a binder.

Sheet mica is used principally in the electronic and electrical industries. Its usefulness in these applications is derived from its unique electrical and thermal insulating properties and its mechanical properties, which allow it to be cut, punched, stamped, and machined to close tolerances. Specifically, Mica is unusual in that it is a good electrical insulator at the same time as being a good thermal conductor.

Vaseline is a brand of petroleum jelly based products owned by Anglo-Dutch company Unilever. While Vaseline can be used as a lubricant, it is also a useful moisture insulator for local skin conditions characterized by tissue dehydration. Vaseline helps protect minor cuts and burns.

It is aluminum potassium sulphate. This is the type of alum that you find in the grocery store for pickling and in baking powder. It is also used in leather tanning, as a flocculant in water purification, as an ingredient in aftershave and as a treatment to fireproof textiles.

Most antacids contain at least one of these key ingredients: calcium carbonate, magnesium hydroxide, aluminum hydroxide and/or sodium bicarbonate. And while all these ingredients work to neutralize your stomach's acid, it's important to know more about them so you can choose the one that's right for you.

Aspirin is Acetyl Salicilic acid.

Aspirin is common name of Acetyl Salicylic Acid.

By-product obtained by soap industry is glycerol.

Chloroform was once administered by inhalation to produce anesthesia, given to relieve pain, and used as a remedy for cough.

Soap helps to lower the surface tension of solution, thus soap get stick to the dust particles and grease and these are removed by action of water.