Chemistry - Study Mode

[#616] This group of alumino-silicate minerals is widely used in making electrical insulators
Correct Answer

(D) Mica

Explanation

Solution: 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.

[#617] Commercial Vaseline is derived from
Correct Answer

(D) Petroleum

Explanation

Solution: 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.

[#618] Alum is used as
Correct Answer

(D) A purifier for water

Explanation

Solution: 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.

[#619] Antacid tablets consist of
Correct Answer

(B) Hydroxides of magnesium and aluminium

Explanation

Solution: 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.

[#620] Aspirin is
Correct Answer

(C) Acetyl Salicilic acid

Explanation

Solution: Aspirin is Acetyl Salicilic acid.