Class 9 Exam > Class 9 Questions > Which of the following elements are present i...
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Which of the following elements are present in Quick lime?
- a)Calcium, bromine
- b)Sodium, Hydrogen, Oxygen
- c)Calcium chloride
- d)Calcium, Oxygen
Correct answer is option 'D'. Can you explain this answer?
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Which of the following elements are present in Quick lime?a)Calcium, b...
Quick lime is CaO. Elements present are calcium and oxygen.
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Which of the following elements are present in Quick lime?a)Calcium, b...
The formula for Quick lime is CaO which is calcium oxide. It is formed by the reaction of two elements namely, Calcium and Oxygen.
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Which of the following elements are present in Quick lime?a)Calcium, b...
Understanding Quick Lime
Quick lime, also known as calcium oxide (CaO), is a crucial chemical compound found in various industrial and chemical processes. It is primarily derived from limestone, which is composed mainly of calcium carbonate (CaCO₃). When limestone is heated, it decomposes into quick lime and carbon dioxide.
Elements Present in Quick Lime
- Quick lime is composed of two essential elements:
- Calcium (Ca): This is the primary element in quick lime, where it serves as the foundational component of the compound.
- Oxygen (O): This element combines with calcium to form calcium oxide.
Why Other Options are Incorrect
- Option A: Calcium, Bromine
- This option includes bromine, which is not a component of quick lime.
- Option B: Sodium, Hydrogen, Oxygen
- None of these elements are part of quick lime; sodium and hydrogen do not combine with calcium to form this compound.
- Option C: Calcium Chloride
- Calcium chloride (CaCl₂) is a different compound altogether, containing chlorine, not oxygen.
Conclusion
The correct answer is option 'D' because quick lime is specifically composed of calcium and oxygen, forming calcium oxide (CaO). Understanding the composition of chemical compounds like quick lime is essential in chemistry, particularly in industrial applications such as construction, metallurgy, and environmental management.
Quick lime, also known as calcium oxide (CaO), is a crucial chemical compound found in various industrial and chemical processes. It is primarily derived from limestone, which is composed mainly of calcium carbonate (CaCO₃). When limestone is heated, it decomposes into quick lime and carbon dioxide.
Elements Present in Quick Lime
- Quick lime is composed of two essential elements:
- Calcium (Ca): This is the primary element in quick lime, where it serves as the foundational component of the compound.
- Oxygen (O): This element combines with calcium to form calcium oxide.
Why Other Options are Incorrect
- Option A: Calcium, Bromine
- This option includes bromine, which is not a component of quick lime.
- Option B: Sodium, Hydrogen, Oxygen
- None of these elements are part of quick lime; sodium and hydrogen do not combine with calcium to form this compound.
- Option C: Calcium Chloride
- Calcium chloride (CaCl₂) is a different compound altogether, containing chlorine, not oxygen.
Conclusion
The correct answer is option 'D' because quick lime is specifically composed of calcium and oxygen, forming calcium oxide (CaO). Understanding the composition of chemical compounds like quick lime is essential in chemistry, particularly in industrial applications such as construction, metallurgy, and environmental management.
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Which of the following elements are present in Quick lime?a)Calcium, bromineb)Sodium, Hydrogen, Oxygenc)Calcium chlorided)Calcium, OxygenCorrect answer is option 'D'. Can you explain this answer?
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