Common Names — Set 3
Chemistry · सामान्य नाम · Questions 21–30 of 60
What is the common name for Zinc Sulfate Heptahydrate?
Correct Answer: D. White vitriol
Zinc sulfate heptahydrate is known as white vitriol. It is used in making lithopone pigment and as a dietary supplement. It is also used in the process of calico printing.
What is the common name of Sodium Thiosulfate?
Correct Answer: B. Hypo
Sodium thiosulfate is commonly known as 'hypo' in the field of photography. It is used as a fixing agent to remove unexposed silver halides from films. It is also used as an antidote for cyanide poisoning.
Which compound is commonly called 'Dead Burnt Plaster'?
Correct Answer: A. Anhydrous calcium sulfate
Anhydrous calcium sulfate is called dead burnt plaster because it loses all water of crystallization. It does not set like Plaster of Paris when mixed with water. It is formed by heating gypsum above 393 Kelvin.
What is the common name for Calcium Carbonate?
Correct Answer: D. Limestone
Calcium carbonate is the chemical name for limestone, chalk, and marble. It is a major component of sea shells and eggshells. It is used in the construction industry and as a dietary calcium supplement.
Which substance is known as 'Pearl Ash'?
Correct Answer: C. Potassium carbonate
Potassium carbonate is commonly referred to as pearl ash. It was historically produced by baking potash in a kiln to remove impurities. It is used in the glass and soap industries.
What is the common name of Solid Carbon Dioxide?
Correct Answer: D. Dry ice
Solid carbon dioxide is called dry ice because it sublimes directly into gas without melting. It is used for refrigeration and to create theatrical fog. It is much colder than regular water ice.
Which compound is commonly known as 'Glauber's Salt'?
Correct Answer: B. Sodium sulfate
Sodium sulfate decahydrate is known as Glauber's salt. It was named after the chemist Johann Rudolf Glauber who discovered it. It is used in the manufacturing of detergents and in wood pulp processing.
What is the common name for Ethanol?
Correct Answer: B. Grain alcohol
Ethanol is commonly known as grain alcohol because it is often produced from corn or wheat. It is the type of alcohol found in alcoholic beverages. It is also increasingly used as a biofuel.
Which chemical is commonly known as 'Wood Spirit'?
Correct Answer: A. Methanol
Methanol is called wood spirit because it was originally produced by the destructive distillation of wood. It is highly toxic and can cause blindness if ingested. It is used as a solvent and as a starting material for formaldehyde.
What is the common name of Hydrated Potassium Aluminum Sulfate?
Correct Answer: C. Alum
Hydrated potassium aluminum sulfate is commonly known as alum. It is used for the purification of water and in tanning leather. It is also used as an aftershave to stop bleeding from small cuts.