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** = Zinc oxide is called philosopher's wool due to its white, wool-like appearance when collected after burning zinc. • (Contextual detail from explanation) • 💡 Wrong-option analysis: B: Lead oxide; C: Copper oxide; D: Iron oxide
What is the common name for the compound Deuterium Oxide?
Correct Answer: B. Heavy water
• **Heavy water** = Deuterium oxide is commonly known as heavy water. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Soft water; C: Hard water; D: Mineral water
Which compound is commonly called 'Hypo'?
Correct Answer: C. Sodium thiosulfate
• **Sodium thiosulfate** = Sodium thiosulfate is known as hypo in photography. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Sodium sulfate; B: Sodium carbonate; D: Sodium chloride
What is the common name of the acid present in ants?
Correct Answer: C. Formic acid
• **Formic acid** = Formic acid is the simplest carboxylic acid and is found in ant stings. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Oxalic acid; B: Citric acid; D: Acetic acid
Which of these is known as 'Baking Soda'?
Correct Answer: D. NaHCO3
• **NaHCO3** = Sodium hydrogen carbonate (NaHCO3) is the chemical formula for baking soda. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: NaCl; B: Na2CO3; C: NaOH
What is the common name for Calcium Carbonate found in sea shells?
Correct Answer: A. Chalk
• **Chalk** = Calcium carbonate is the primary constituent of chalk and sea shells. • (Contextual detail from explanation) • 💡 Wrong-option analysis: B: Gypsum; C: Quick lime; D: Slaked lime
Which substance is known as 'Lunar Caustic' in medicine?
Correct Answer: D. Silver nitrate
• **Silver nitrate** = Silver nitrate is referred to as lunar caustic. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Silver iodide; B: Silver oxide; C: Silver bromide
What is the common name for 'Nitrated Cellulose'?
Correct Answer: C. Gun cotton
• **Gun cotton** = Nitrocellulose is commonly known as gun cotton. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Tear gas; B: Mustard gas; D: TNT
Which of these is commonly known as 'Quicksilver'?
Correct Answer: B. Mercury
• **Mercury** = Mercury is called quicksilver because of its silvery appearance and liquid state at room temperature. • (Contextual detail from explanation) • 💡 Wrong-option analysis: A: Lead; C: Aluminum; D: Silver
What is the common name for Lead Monoxide?
Correct Answer: A. Litharge
• **Litharge** = Lead monoxide is commonly known as litharge. • **oxidation** — it is a secondary mineral that forms from the oxidation of galena ores • 💡 Wrong-option analysis: B: Galena; C: Cinnabar; D: Haematite