Common Names — Set 5
Chemistry · सामान्य नाम · Questions 41–50 of 60
Which chemical is known as 'Philosopher's Wool'?
Correct Answer: A. Zinc oxide
Zinc oxide is called philosopher's wool due to its white, wool-like appearance when collected after burning zinc. it is used in ointments and as a white pigment in paints. It is also used in sunscreens to block UV rays.
What is the common name for the compound Deuterium Oxide?
Correct Answer: B. Heavy water
Deuterium oxide is commonly known as heavy water. It is used as a moderator and coolant in nuclear reactors. It has slightly different physical properties compared to regular water.
Which compound is commonly called 'Hypo'?
Correct Answer: C. Sodium thiosulfate
Sodium thiosulfate is known as hypo in photography. It helps in fixing the image by removing unused silver salts. It is also used to neutralize chlorine in treated water.
What is the common name of the acid present in ants?
Correct Answer: C. Formic acid
Formic acid is the simplest carboxylic acid and is found in ant stings. The name comes from 'Formica', the Latin word for ant. It is used as a preservative and antibacterial agent in livestock feed.
Which of these is known as 'Baking Soda'?
Correct Answer: D. NaHCO3
Sodium hydrogen carbonate (NaHCO3) is the chemical formula for baking soda. It is an alkaline compound used in baking and medicine. It reacts with acids to release carbon dioxide.
What is the common name for Calcium Carbonate found in sea shells?
Correct Answer: A. Chalk
Calcium carbonate is the primary constituent of chalk and sea shells. It is a soft, white, porous sedimentary carbonate rock. It is used in the production of quick lime by heating.
Which substance is known as 'Lunar Caustic' in medicine?
Correct Answer: D. Silver nitrate
Silver nitrate is referred to as lunar caustic. It is used as a cauterizing agent to remove warts or treat wounds. It must be handled carefully as it stains the skin black.
What is the common name for 'Nitrated Cellulose'?
Correct Answer: C. Gun cotton
Nitrocellulose is commonly known as gun cotton. It is a highly explosive material used in propellants and smokeless powder. It was discovered by treating cotton with nitric acid.
Which of these is commonly known as 'Quicksilver'?
Correct Answer: B. Mercury
Mercury is called quicksilver because of its silvery appearance and liquid state at room temperature. It is the only metal that is liquid under standard conditions. It is used in thermometers and barometers.
What is the common name for Lead Monoxide?
Correct Answer: A. Litharge
Lead monoxide is commonly known as litharge. it is a secondary mineral that forms from the oxidation of galena ores. It is used in the glass industry and in making lead-acid batteries.