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Calcium disappears into water forming :
- a)Calcium carbonate
- b)transparent water
- c)oxygen gas
- d)milky water
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Calcium disappears into water forming :a)Calcium carbonateb)transparen...
When calcium hydroxide (lime water) is passed through carbon dioxide gas water turns milky due to formation of calcium carbonate, which is soluble in water.
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Calcium disappears into water forming :a)Calcium carbonateb)transparen...
Explanation:
When calcium is added to water, it reacts with water to form calcium hydroxide and hydrogen gas. The reaction can be represented as follows:
Ca + 2H2O → Ca(OH)2 + H2
Calcium hydroxide is only slightly soluble in water. As a result, it forms a milky suspension in water. This is due to the formation of calcium hydroxide particles that scatter light and create a cloudy appearance. Thus, the correct answer is option 'D'.
Calcium Carbonate:
Calcium carbonate is not formed when calcium is added to water. Calcium carbonate is formed when calcium hydroxide reacts with carbon dioxide in the air. The reaction can be represented as follows:
Ca(OH)2 + CO2 → CaCO3 + H2O
This reaction is responsible for the formation of stalactites and stalagmites in caves.
Transparent Water:
Adding calcium to water does not result in transparent water. The formation of calcium hydroxide particles makes the water appear milky.
Oxygen Gas:
Calcium does not react with water to form oxygen gas. Calcium is not a source of oxygen, and it does not have the ability to liberate oxygen gas.
Therefore, the correct answer is option 'D' which states that calcium disappears into water forming milky water.
When calcium is added to water, it reacts with water to form calcium hydroxide and hydrogen gas. The reaction can be represented as follows:
Ca + 2H2O → Ca(OH)2 + H2
Calcium hydroxide is only slightly soluble in water. As a result, it forms a milky suspension in water. This is due to the formation of calcium hydroxide particles that scatter light and create a cloudy appearance. Thus, the correct answer is option 'D'.
Calcium Carbonate:
Calcium carbonate is not formed when calcium is added to water. Calcium carbonate is formed when calcium hydroxide reacts with carbon dioxide in the air. The reaction can be represented as follows:
Ca(OH)2 + CO2 → CaCO3 + H2O
This reaction is responsible for the formation of stalactites and stalagmites in caves.
Transparent Water:
Adding calcium to water does not result in transparent water. The formation of calcium hydroxide particles makes the water appear milky.
Oxygen Gas:
Calcium does not react with water to form oxygen gas. Calcium is not a source of oxygen, and it does not have the ability to liberate oxygen gas.
Therefore, the correct answer is option 'D' which states that calcium disappears into water forming milky water.
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Calcium disappears into water forming :a)Calcium carbonateb)transparent waterc)oxygen gasd)milky waterCorrect answer is option 'D'. Can you explain this answer?
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Calcium disappears into water forming :a)Calcium carbonateb)transparent waterc)oxygen gasd)milky waterCorrect answer is option 'D'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about Calcium disappears into water forming :a)Calcium carbonateb)transparent waterc)oxygen gasd)milky waterCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Calcium disappears into water forming :a)Calcium carbonateb)transparent waterc)oxygen gasd)milky waterCorrect answer is option 'D'. Can you explain this answer?.
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