Chemistry – Mixtures

1. Which of the following metals is the main component of Pewter alloy?

  1. Lead
  2. Tin
  3. Silver
  4. Copper
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Answer: Option B. Tin

2. Which metal is combined with pure gold to create gold jewelry?

  1. Copper
  2. Iron
  3. Sodium
  4. Tin
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Answer: Option A. Copper

3. Which statement about Stainless Steel is incorrect?

  1. It contains Chromium
  2. It is very durable and tough
  3. It is corrosion-resistant
  4. It contains Tin
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Answer: Option D. It contains Tin

4. Brass is an alloy made of which metals?

  1. Copper and Tin
  2. Zinc and Tin
  3. Copper and Zinc
  4. Iron and Nickel
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Answer: Option C. Copper and Zinc

5. Identify the incorrect statement about metals:

  1. Alloying helps improve the properties of a metal
  2. An alloy has a higher melting point than a pure metal
  3. An alloy has a lower melting point than a pure metal
  4. Alloys are generally harder than pure metals
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Answer: Option B. An alloy has a higher melting point than a pure metal