Class 6 Exam > Class 6 Questions > Which one will show a metallic lustre?a)Any s...
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Which one will show a metallic lustre?
- a)Any surface of a metal
- b)Freshly cut surface of a metal
- c)Freshly cut surface of non-metal
- d)Surfaces of all materials
Correct answer is option 'B'. Can you explain this answer?
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Which one will show a metallic lustre?a)Any surface of a metalb)Freshl...
Metals when cut, their freshly cut surface has shining.
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Which one will show a metallic lustre?a)Any surface of a metalb)Freshl...
Explanation:
Metals are substances that have a characteristic metallic lustre, which is the result of their ability to reflect light. This lustre is due to the presence of free electrons in the metal atoms, which are able to absorb and reflect light.
The correct answer to this question is option 'B', the freshly cut surface of a metal.
When a metal is cut, the surface is exposed to air, which causes the metal to oxidize. This oxidation forms a thin layer of oxide on the surface of the metal, which can affect its lustre. However, the freshly cut surface of a metal is free from oxidation and is therefore able to reflect light, resulting in a characteristic metallic lustre.
Therefore, the freshly cut surface of a metal is the only surface that will show a metallic lustre. The other options, including any surface of a metal, a freshly cut surface of a non-metal, and the surfaces of all materials, do not have the same properties as a freshly cut surface of a metal, and will therefore not exhibit a metallic lustre.
Metals are substances that have a characteristic metallic lustre, which is the result of their ability to reflect light. This lustre is due to the presence of free electrons in the metal atoms, which are able to absorb and reflect light.
The correct answer to this question is option 'B', the freshly cut surface of a metal.
When a metal is cut, the surface is exposed to air, which causes the metal to oxidize. This oxidation forms a thin layer of oxide on the surface of the metal, which can affect its lustre. However, the freshly cut surface of a metal is free from oxidation and is therefore able to reflect light, resulting in a characteristic metallic lustre.
Therefore, the freshly cut surface of a metal is the only surface that will show a metallic lustre. The other options, including any surface of a metal, a freshly cut surface of a non-metal, and the surfaces of all materials, do not have the same properties as a freshly cut surface of a metal, and will therefore not exhibit a metallic lustre.
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Which one will show a metallic lustre?a)Any surface of a metalb)Freshl...
The correct answer is technically 'B' because when the metals are freshly cut they will have lustre on them.
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Which one will show a metallic lustre?a)Any surface of a metalb)Freshly cut surface of a metalc)Freshly cut surface of non-metald)Surfaces of all materialsCorrect answer is option 'B'. Can you explain this answer?
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