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PART - 1 CH - 3 Metals and Non-Metals Science - PART - 1 CH - 3 Metals and Non-Metals

Gujarat Board (GSEB) - STD 10 - Science (GSEB - English Medium). 188 questions in this chapter.

Question types

PART - 1 CH - 3 Metals and Non-Metals question types

188 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

188
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7
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5
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Sample Questions

PART - 1 CH - 3 Metals and Non-Metals questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q1 Mark
Which of the following metals is refined by electrolytic refining?
(i) Au, (ii) Cu, (iii) Na, (iv) K
  • ✓
    (i) and (ii)
  • B
    (i) and (iii)
  • C
    (ii) and (iii)
  • D
    (iii) and (iv)

Answer: A.

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Q 2M.C.Q1 Mark
In the badminton tournament Saina Nehwal has won a Bronze medal. Name the metals used in the preparation of medal.
  • A
    Cu and Zn
  • ✓
    Cu and Sn
  • C
    Pb and Sn
  • D
    Cu and Pb

Answer: B.

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Q 3M.C.Q1 Mark
Which of the following statements is incorrect?
  • A
    Corrosion of copper takes place by contact with air and water.
  • ✓
    The melting points and boiling points of metals are low.
  • C
    The method to convert carbonate containing ore to metal oxide is called calcination.
  • D
    The displacement of less active metals from their solution takes place by more active metal.

Answer: B.

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Q 4M.C.Q1 Mark
Which of the following reactions is not possible?
  • A
    $Zn ( s )+ CuSO _4( aq ) \rightarrow ZnSO _4( aq )+ Cu ( s )$
  • B
    $Zn ( s )+ FeSO _4( aq ) \rightarrow ZnSO _4( aq )+ Fe ( s )$
  • C
    $Fe ( s )+ CuSO _4( aq ) \rightarrow FeSO _4( aq )+ Cu ( s )$
  • ✓
    $Cu ( s )+ FeSO _4( aq ) \rightarrow CuSO _4( aq )+ Fe ( s )$

Answer: D.

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Q 5M.C.Q1 Mark
In which of the following, displacement reaction is possible?
  • A
    Solution of $NaCl +$ coin of copper
  • B
    Solution of $MgCl _2+$ coin of aluminium
  • C
    Solution of $FeSO _4+$ coin of silver
  • ✓
    Solution of $AgNO _3+$ coin of copper

Answer: D.

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Q 7Fill in the blank1 Mark
Iron (III) oxide is heated with aluminium powder forms iron in the molten state. This process is known as __________ .(Thermit process, Roasting, Smelting)
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Q 13True-False1 Mark
The compounds formed by transfer of electrons are known as ionic compounds; moreover, they are known as electrovalent compounds.
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Q 21[2 Mark Questions]2 Marks
Give an example of a metal which ...
(i) is a liquid at room temperature.
(ii) can be easily cut with a knife.
(iii) is the best conductor of heat.
(iv) is a poor conductor of heat.
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Q 26[3 Mark Questions]3 Marks
A jeweller made jewellery (ornaments) of 22 carat gold and also charged his customers for the rate of 24 carat gold. His business developed due to this act.
(1) Why can't we make ornaments of 24 carat gold?
(2) Name two metals that can be added to make jewellery.
(3) What value of the jeweller is reflected in this act?
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Q 27[3 Mark Questions]3 Marks
Compound 'X' and aluminium is used to join railway track.
(i) Identify compound 'X'.
(ii) Name the type of reaction.
(iii) Write the chemical equation for this reaction.
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Q 28[3 Mark Questions]3 Marks
Naman saw his friend riding a cycle which was completely rusted at the edge of the pedal. He advised his friend to weld it and apply a coating of oil paint over it.
(1) Why do iron rust?
(2) Give two remedies to avoid rusting.
(3) What value of Naman is seen in the above act?
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Q 29[3 Mark Questions]3 Marks
Arvind delivered a speech in the school assembly on "How to minimise the use of heavy metals?" He told how mercury thermometers when broken and thrown away in the garbage leads to pollution of soil and underground water pollution. He also showed how cadmium and lead also causes dangerous health problems.
(1) Name two heavy metals which are present in the mobile batteries.
(2) Name the disease caused due to mercury entering into our food-chain.
(3) What value of Arvind is seen in the act?
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Q 30[3 Mark Questions]3 Marks
Explain:
(a) Why copper is used to make taps, hot water tanks and not any other metal?
(b) What will happen, if iron nails are kept in a solution containing copper sulphate?
(c) Write the balanced chemical equations for the following and balance it:
(i) $Ca + H _2 O \rightarrow$
(ii) $Al + HCl \rightarrow$
(iii) $Fe + H _2 O \rightarrow$
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