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Indian Navy SSR (Sailor) Metals and Non-metals — practice questions

Explore 3 free Metals and Non-metals questions in Indian Navy SSR (Sailor) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Metals and Non-metals questions and exercises with answers

Showing questions 1–3 of 3.

Which metal will NOT displace hydrogen from dilute HCl?Read the answer and worked solution →Which is the most reactive metal among these?Read the answer and worked solution →Which of the following can undergo a chemical reaction?Read the answer and worked solution →

Worked practice questions

Which metal will NOT displace hydrogen from dilute HCl?

  1. zinc
  2. iron
  3. copper
  4. magnesium
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Correct answer: C. copper

Copper sits below hydrogen in the reactivity series, so it cannot displace H₂ from a dilute acid. The other three are above hydrogen and do.

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Which is the most reactive metal among these?

  1. K
  2. Al
  3. Fe
  4. Zn
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Correct answer: A. K

**Reactivity series order:** K > Al > Zn > Fe. Potassium is the most reactive of the four.

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Which of the following can undergo a chemical reaction?

  1. $\mathrm{MgSO}_4 + \mathrm{Fe}$
  2. $\mathrm{CuSO}_4 + \mathrm{Fe}$
  3. $\mathrm{ZnSO}_4 + \mathrm{Fe}$
  4. $\mathrm{MgSO}_4 + \mathrm{Pb}$
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Correct answer: B. $\mathrm{CuSO}_4 + \mathrm{Fe}$

This Metals and Non-metals item tests a core Chemistry concept. Correct answer: $\mathrm{CuSO}_4 + \mathrm{Fe}$. _Source: syllabus Exemplar Science Class 10_

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