Question : What is the chemical formula of "quartz"?
Option 1: SiO3
Option 2: SiO5
Option 3: SiO
Option 4: SiO2
Correct Answer: SiO2
Solution : The correct answer is SiO2.
The chemical formula of quartz is SiO2. It consists of silicon (Si) and oxygen (O) atoms. Quartz is a common mineral in the Earth's crust and is one of the most abundant minerals. It has a crystalline structure and is often found in various forms, including clear crystals, amethyst, and rose quartz, among others.
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Question : What is the name of the 1,3-isomer (or meta-isomer) of benzenediol with the chemical formula C6H4(OH)2?
Option 1: m-Cresol
Option 2: Resorcinol
Option 3: Catechol
Option 4: Glycerol
Question : Which of the following is the formula of barium peroxide?
Option 1: Ba2O2
Option 2: BaSO4
Option 3: BaO
Option 4: BaO2
Question : What is the correct formula for calcium hydroxide?
Option 1: CaOH
Option 2: Ca(OH)4
Option 3: Ca(AlOH)4
Option 4: Ca(OH)2
Question : What is the chemical formula for the aldehyde group?
Option 1: –COOH
Option 2: –OH
Option 3: –CH2O
Option 4: –CHO
Question : Which of the following represents an alpha particle?
Option 1: 42He
Option 2: 24He
Option 3: 21He
Option 4: 11He
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