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A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will be
I. zinc granules have no regular shape.
II. Zinc granules have silvery grey colour.
III. The colour of zinc granules changed to brownish black.
I. zinc granules have no regular shape.
II. Zinc granules have silvery grey colour.
III. The colour of zinc granules changed to brownish black.
- a)II only
- b)I, II and III
- c)III only
- d)I only
Correct answer is 'B'. Can you explain this answer?
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Verified Answer
A student added zinc granules to copper sulphate solution taken in a t...
The displacement reaction that occurs is Zn(s)+ CuSO4(aq) → ZnSO4(aq)+Cu(s) (Brownish black)
Most Upvoted Answer
A student added zinc granules to copper sulphate solution taken in a t...
Observations made by the student during the experiment:
I. Zinc granules have no regular shape.
II. Zinc granules have a silvery grey color.
III. The color of zinc granules changed to brownish black.
Explanation:
When the student added zinc granules to copper sulphate solution, a chemical reaction took place between zinc and copper sulphate. This reaction is known as a displacement reaction, where a more reactive metal (zinc) displaces a less reactive metal (copper) from its compound (copper sulphate). Let's analyze each observation made by the student:
I. Zinc granules have no regular shape:
Zinc granules are irregularly shaped. This observation is correct because metals are usually malleable and can be easily shaped. Zinc granules may have different sizes and shapes, but they do not have a regular or uniform shape.
II. Zinc granules have a silvery grey color:
Zinc is a metallic element that has a characteristic silvery grey color. This observation is correct because zinc granules typically have a shiny and metallic appearance. The silvery grey color is a physical property of zinc.
III. The color of zinc granules changed to brownish black:
During the displacement reaction, zinc reacts with copper sulphate to form zinc sulphate and copper. The copper that is formed appears as a brownish black solid or precipitate. This observation is correct because the formation of copper is a clear indication of the chemical reaction between zinc and copper sulphate.
In conclusion, the correct observations made by the student are:
- Zinc granules have no regular shape.
- Zinc granules have a silvery grey color.
- The color of zinc granules changed to brownish black.
I. Zinc granules have no regular shape.
II. Zinc granules have a silvery grey color.
III. The color of zinc granules changed to brownish black.
Explanation:
When the student added zinc granules to copper sulphate solution, a chemical reaction took place between zinc and copper sulphate. This reaction is known as a displacement reaction, where a more reactive metal (zinc) displaces a less reactive metal (copper) from its compound (copper sulphate). Let's analyze each observation made by the student:
I. Zinc granules have no regular shape:
Zinc granules are irregularly shaped. This observation is correct because metals are usually malleable and can be easily shaped. Zinc granules may have different sizes and shapes, but they do not have a regular or uniform shape.
II. Zinc granules have a silvery grey color:
Zinc is a metallic element that has a characteristic silvery grey color. This observation is correct because zinc granules typically have a shiny and metallic appearance. The silvery grey color is a physical property of zinc.
III. The color of zinc granules changed to brownish black:
During the displacement reaction, zinc reacts with copper sulphate to form zinc sulphate and copper. The copper that is formed appears as a brownish black solid or precipitate. This observation is correct because the formation of copper is a clear indication of the chemical reaction between zinc and copper sulphate.
In conclusion, the correct observations made by the student are:
- Zinc granules have no regular shape.
- Zinc granules have a silvery grey color.
- The color of zinc granules changed to brownish black.
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Community Answer
A student added zinc granules to copper sulphate solution taken in a t...
In this reaction zinc replaces copper being more reactive.w.k.t after a reaction there will be change in shape, change in colour hence colour of An granules change n shape also changes
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A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer?
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A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer?.
A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer?.
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A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer?, a detailed solution for A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer? has been provided alongside types of A student added zinc granules to copper sulphate solution taken in a test tube. Out of the following, the correct observation (s) made by the student will beI. zinc granules have no regular shape.II. Zinc granules have silvery grey colour.III. The colour of zinc granules changed to brownish black.a)II onlyb)I, II and IIIc)III onlyd)I onlyCorrect answer is 'B'. Can you explain this answer? theory, EduRev gives you an
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