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UP Board Class 10 Metals and Non-metals — practice questions — page 2

Explore 75 free Metals and Non-metals questions in UP Board Class 10 Science. 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 31–60 of 75.

Sodium is stored under kerosene because it:Read the answer and worked solution →Iron nail dipped in copper sulfate solution shows colour change because: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 →Reaction of Mg with steam gives:Read the answer and worked solution →When magnesium burns in air the ash that forms is:Read the answer and worked solution →In the formation of NaCl from Na and Cl, sodium:Read the answer and worked solution →Ionic compounds conduct electricity:Read the answer and worked solution →The ore of aluminium is:Read the answer and worked solution →Highly reactive metals like sodium and aluminium are extracted from their ores by:Read the answer and worked solution →Heating a sulfide ore strongly in excess air converts it to an oxide. This step is called:Read the answer and worked solution →Iron is protected from rusting by coating it with zinc. This process is called:Read the answer and worked solution →Calcination differs from roasting in that calcination is performed:Read the answer and worked solution →Which property is typical of metals?Read the answer and worked solution →Which of these is a non-metal?Read the answer and worked solution →Metal + O₂ usually yields a:Read the answer and worked solution →Most-reactive-first activity series:Read the answer and worked solution →Calcination involves heating ore:Read the answer and worked solution →Corrosion of iron produces:Read the answer and worked solution →Which of the following property is generally not shown by metals?Read the answer and worked solution →The ability of metals to be drawn into thin wire is known asRead the answer and worked solution →Which one of the following metals do not react with cold as well as hot water?Read the answer and worked solution →Which of the following oxide(s) of iron would be obtained on prolonged reaction of iron with steam?Read the answer and worked solution →The composition of aqua-regia isRead the answer and worked solution →Which of the following are not ionic compounds? (i) KCl (ii) HCl (iii) $\mathrm{CCl}_4$ (iv) NaClRead the answer and worked solution →Which one of the following properties is not generally exhibited by ionic compounds?Read the answer and worked solution →Which of the following metals exist in their native state in nature? (i) Cu (ii) Au (iii) Zn (iv) AgRead the answer and worked solution →Silver articles become black on prolonged exposure to air. This is due to the formation ofRead the answer and worked solution →Galvanisation is a method of protecting iron from rusting by coating with a thin layer ofRead the answer and worked solution →Stainless steel is very useful material for our life. In stainless steel, iron is mixed withRead the answer and worked solution →

Worked practice questions

Sodium is stored under kerosene because it:

  1. evaporates in air
  2. reacts with air, water
  3. denser than kerosene
  4. unstable to light
Show answer and solution

Correct answer: B. reacts with air, water

Sodium catches fire on contact with moisture in air. Kerosene seals it from both air and water.

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Iron nail dipped in copper sulfate solution shows colour change because:

  1. No reaction occurs
  2. Fe is more reactive than Cu
  3. Cu corrodes iron
  4. Cu is more reactive than Fe
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Correct answer: B. Fe is more reactive than Cu

Iron is above copper in the reactivity series, so it displaces copper from CuSO₄: Fe + CuSO₄ → FeSO₄ + Cu. Solution turns from blue to green; nail gets a brown coating.

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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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