alleryStart learning →The most malleable metals are:
- gold and silver
- zinc and lead
- iron and copper
- sodium and potassium
Show answer and solution
Correct answer: A. gold and silver
Gold and silver are the most malleable (and ductile) metals.
Indian Navy SSR (Sailor) Metals and Non-metals — practice questions
Explore 4 free Metals and Non-metals questions in Indian Navy SSR (Sailor) Science. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–4 of 4.
The most malleable metals are:Read the answer and worked solution →The thermit reaction, used to join railway tracks, involves the reaction of iron(III) oxide with:Read the answer and worked solution →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 →
Worked practice questions
The thermit reaction, used to join railway tracks, involves the reaction of iron(III) oxide with:
- sodium
- zinc
- carbon
- aluminium
Show answer and solution
Correct answer: D. aluminium
Thermit: Fe₂O₃ + 2Al → 2Fe + Al₂O₃, a highly exothermic displacement used to weld rails.
Which metal will NOT displace hydrogen from dilute HCl?
- zinc
- iron
- copper
- magnesium
Show answer and solution
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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