10th Class Science Metals and Non-metals / धातु और अधातु Question Bank

done Metals and Non-metals Total Questions - 40

• question_answer1)
  Identify the ore of zinc.
  A)
  Calamine done clear
  B)
  Dolomite                            done clear
  C)
  Haematite  done clear
  D)
  Cryolite                               done clear
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• question_answer2)
  Which gas is liberated when copper is treated with concentrated \[{{H}_{2}}S{{O}_{4}}\]?
  A)
  \[S{{O}_{2}}\]     done clear
  B)
  \[S{{O}_{3}}\]                   done clear
  C)
  \[{{H}_{2}}\]                                      done clear
  D)
  \[{{H}_{2}}S\] done clear
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• question_answer3)
  Which of the following elements liberate hydrogen on reacting with diluted nitric acid?
  A)
  Zn and Mg                          done clear
  B)
  Mn and Sn                         done clear
  C)
  Mg and Mn        done clear
  D)
  Mn and Fe                         done clear
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• question_answer4)
  Which of the given metals is stored under kerosene to prevent oxidation?
  A)
  Copper                                done clear
  B)
  Potassium                          done clear
  C)
  Magnesium                       done clear
  D)
  Calcium                               done clear
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• question_answer5)
  In Which property of a metal helps it to bear a lot of strain?
  A)
  Hardness                            done clear
  B)
  Tensile strength              done clear
  C)
  Ductility                               done clear
  D)
  Malleability        done clear
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• question_answer6)
  Which of the following ores are subjected to froth floatation?
  A)
  \[A{{l}_{2}}{{O}_{3}}\]                                  done clear
  B)
  \[ZnS\]                done clear
  C)
  \[CaC{{l}_{2}}\]                                done clear
  D)
  \[KCl\]                 done clear
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• question_answer7)
  Which of the following metals is obtained from its ores by reduction method using carbon?
  A)
  Zinc                                       done clear
  B)
  Calcium                               done clear
  C)
  Magnesium       done clear
  D)
  Gold                     done clear
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• question_answer8)
  Which of the following is used as flux in the extraction of iron?
  A)
  Limestone                          done clear
  B)
  Silica                     done clear
  C)
  Flint                                      done clear
  D)
  Feldspar                              done clear
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• question_answer9)
  Why is polling process employed?
  A)
  For the removal of \[C{{u}_{2}}O\] from Cu done clear
  B)
  For the removal of \[A{{l}_{2}}{{O}_{3}}\] from Al done clear
  C)
  For the removal of \[F{{e}_{2}}{{O}_{3}}\] from Fe done clear
  D)
  For the removal of \[MgC{{l}_{2}}\] from Mg done clear
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• question_answer10)
  Identify the formula of super phosphate of lime?
  A)
  \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\]            done clear
  B)
  \[CaHP{{O}_{4}}\]                           done clear
  C)
  \[Ca{{(OH)}_{2}}\]          done clear
  D)
  \[Ca{{({{H}_{2}}P{{O}_{4}})}_{2}}{{H}_{2}}O\] done clear
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• question_answer11)
  How is \[{{P}_{2}}{{O}_{5}}\] mainly used?
  A)
  As an oxidizing agent done clear
  B)
  As a reducing agent done clear
  C)
  As a drying agent done clear
  D)
  As a hydrating agent done clear
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• question_answer12)
  Nitric acid oxidises sulphur to form
  A)
  \[S{{O}_{2}}\]                                   done clear
  B)
  \[S{{O}_{3}}\]                    done clear
  C)
  \[{{H}_{2}}{{S}_{2}}{{O}_{7}}\]                                  done clear
  D)
  \[{{H}_{2}}S{{O}_{4}}\] done clear
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• question_answer13)
  Which gas is evolved when copper is treated with dil. \[HN{{O}_{3}}\]?
  A)
  \[{{H}_{2}}\]                                      done clear
  B)
  NO                        done clear
  C)
  \[{{N}_{2}}O\]                                  done clear
  D)
  \[{{N}_{2}}{{O}_{3}}\] done clear
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• question_answer14)
  Which of the given metals does not react with sulphuric acid?
  A)
  Iron                                       done clear
  B)
  Gold                     done clear
  C)
  Zinc                                       done clear
  D)
  Magnesium done clear
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• question_answer15)
  Which metals are used to make solder?
  A)
  Lead                                     done clear
  B)
  Tin                         done clear
  C)
  Copper                                done clear
  D)
  Both (a) and (b) done clear
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• question_answer16)
  Which pair of metals are extracted just by heating with their sulphide ores in air?
  A)
  Mercury and copper done clear
  B)
  Mercury and magnesium done clear
  C)
  Silver and mercury done clear
  D)
  Iron and mercury done clear
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• question_answer17)
  \[S{{O}_{2}}\] can act as a/an
  A)
  oxidizing agent. done clear
  B)
  reducing agent. done clear
  C)
  bleaching agent. done clear
  D)
  All of the above done clear
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• question_answer18)
  Identify the constituent metals o sterling silver.
  A)
  Silver and copper done clear
  B)
  Copper and zinc done clear
  C)
  Silver and gold done clear
  D)
  Silver and aluminium done clear
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• question_answer19)
  Complete the reaction given below. \[ZnO+2NaOH\to ?\]
  A)
  \[Zn{{(OH)}_{2}}+{{H}_{2}}O\] done clear
  B)
  \[N{{a}_{2}}Zn{{O}_{2}}+{{H}_{2}}O\] done clear
  C)
  \[Zn{{(OH)}_{2}}+N{{a}_{2}}O\] done clear
  D)
  \[N{{a}_{2}}Zn{{O}_{2}}+N{{a}_{2}}O\] done clear
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• question_answer20)
  Which type of ores are subjected to roasting?
  A)
  Oxide ores done clear
  B)
  Silicate ores done clear
  C)
  Sulphide ores done clear
  D)
  Carbonate ores done clear
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• question_answer21)
  In which of the following is thermite welding done?
  A)
  Girders done clear
  B)
  Railway tracks done clear
  C)
  Cracked machine parts            done clear
  D)
  All of the above done clear
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• question_answer22)
  A particular metal forms an invisible protective layer and prevents further oxidation. Identify the metal, its oxide and chemical formula.                    
  A)
  Iron, iron oxide, \[F{{e}_{2}}{{O}_{3}}\] done clear
  B)
  Aluminium, aluminium oxide, \[A{{l}_{2}}{{O}_{3}}\] done clear
  C)
  Zinc, zinc oxide, \[\text{ZnO}\] done clear
  D)
  Copper, copper oxide, \[\text{CuO}\] done clear
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• question_answer23)
  Identify an alloy that is used in the making of pressure cooker.
  A)
  Magnalium        done clear
  B)
  Duralumin                          done clear
  C)
  AInico                                  done clear
  D)
  Nickel steel                        done clear
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• question_answer24)
  Pure gold is soft. Which metal is added to 22 carat gold to make ornaments?
  A)
  Platinum                             done clear
  B)
  Aluminium                         done clear
  C)
  Copper                                done clear
  D)
  Iron done clear
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• question_answer25)
  Which is the best process for the refining of metals?
  A)
  Liquation                            done clear
  B)
  Cupellation done clear
  C)
  Polling                                  done clear
  D)
  Electrolytic refining done clear
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• question_answer26)
  Which of the following is/are formed when aluminium oxide reacts with \[\text{NaOH}\] solution?
  A)
  No reaction takes place. done clear
  B)
  Oxygen gas is evolved. done clear
  C)
  Salt and water are formed. done clear
  D)
  Hydrogen gas is evolved. done clear
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• question_answer27)
  What is the chemical compositon of thermite?
  A)
  A mixture of \[F{{e}_{2}}{{O}_{3}}\] and aluminium powder done clear
  B)
  A mixture of Mg and \[Ba{{O}_{2}}\] done clear
  C)
  A mixture of \[A{{l}_{2}}{{O}_{3}}\] and iron done clear
  D)
  A mixture of Mg and \[Al\] powder done clear
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• question_answer28)
  Which of the following is a metalloid?
  A)
  Carbon                                done clear
  B)
  Silicon                  done clear
  C)
  Germanium                       done clear
  D)
  Tin                         done clear
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• question_answer29)
  Which is the lightest metal?
  A)
  Beryllium                            done clear
  B)
  Aluminium                         done clear
  C)
  Lithium                                done clear
  D)
  Caesium done clear
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• question_answer30)
  Which metal expands on solidification?
  A)
  Type metal                        done clear
  B)
  Gun metal                          done clear
  C)
  Fuse metal                         done clear
  D)
  Bell metal done clear
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• question_answer31)
  Study the following steps. \[C{{u}_{2}}S\xrightarrow[{}]{roasted\,in\,air}(X)\xrightarrow[{}]{rouasted\,without\,air}(Y)\] Based on the above steps, identify X and Y.                
  A)

  X	Y
  Mixture of \[Cu\] and \[CuO\]	Mixture of \[Cu\] and \[S{{O}_{2}}\]

  done clear
  B)
   

  X	Y
  Mixture of \[C{{u}_{2}}O,C{{u}_{2}}S\] and \[S{{O}_{2}}\]	Mixture of \[Cu\] and \[S{{O}_{2}}\]

  done clear
  C)
   

  X	Y
  Mixture of \[CuO\] and \[S{{O}_{2}}\]	Mixture of \[Cu\] and \[S{{O}_{2}}\]

  done clear
  D)
   

  X	Y
  Mixture of \[Cu\]and \[CuO\]	Mixture of \[CuO\]and \[CuS\]

  done clear
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• question_answer32)
  Given below is the apparatus showing the electrolysis of a substance in Nelson's cell. When 'P' undergoes electrolysis 'Q' and 'R' are formed. 'Q' can be used in preparing soaps and detergents. 'R' can be used in the preparation of PVC, CFC and in swimming pools. What are P, Q and R?
  A)

  P	Q	R
  \[NaHC{{O}_{3}}\]	\[N{{a}_{2}}C{{O}_{3}}C{{O}_{2}}\]	\[NaOH\]

  done clear
  B)
   

  P	Q	R
  \[NaOH\]	\[C{{l}_{2}}\]	\[NaCl\]

  done clear
  C)
   

  P	Q	R
  \[NaCl\]	\[NaOH\]	\[C{{l}_{2}}\]

  done clear
  D)
   

  P	Q	R
  \[N{{a}_{2}}C{{O}_{3}}\]	\[{{H}_{2}}O\]	\[C{{O}_{2}}\]

  done clear
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• question_answer33)
  Four colourless salt solutions given in the figures are placed in separate containers and a copper rod is dipped in each. In which container does the solution turn blue?
  A)
     done clear
  B)
     done clear
  C)
                done clear
  D)
  done clear
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• question_answer34)
  Brass is an alloy of
  A)
  Cu and \[Sn\].                  done clear
  B)
  Cu and Zn.                          done clear
  C)
  Cu and \[Al\].                    done clear
  D)
  \[Sn\] and \[Pb\].                            done clear
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• question_answer35)
  In the thermite process, which of the following is used as a reducing agent?
  A)
  C                            done clear
  B)
  \[Al\]                    done clear
  C)
  Na                                         done clear
  D)
  Mg done clear
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• question_answer36)
  Which method is employed for obtaining a pure metal?
  A)
  Froth floatation done clear
  B)
  Electrolytic refining done clear
  C)
  Magnetic separation done clear
  D)
  Gravity separation done clear
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• question_answer37)
  Which of the following statements is/are true based on the given reactions?                

  • \[ZnO+C\to Zn+CO\]                
  • \[2F{{e}_{2}}{{O}_{3}}+3C\to 4Fe+3C{{O}_{2}}\]
  A)
  Carbon is reduced. done clear
  B)
  Metal oxide is reduced. done clear
  C)
  Metal oxide is oxidized. done clear
  D)
  Both (b) and (c) done clear
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• question_answer38)
  What happens when a mixture of powdered iron and copper (II) oxide are heated in a crucible?
  A)
  Iron (II) oxide and copper are formed. done clear
  B)
  Copper (III) oxide and iron (II) oxide are formed. done clear
  C)
  Iron (III) oxide and copper sulphate are formed. done clear
  D)
  No reaction takes place. done clear
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• question_answer39)
  Which of the following statements is correct?
  A)
  All metals are ductile. done clear
  B)
  All non-metals are ductile. done clear
  C)
  Generally, metals are ductile. done clear
  D)
  Some non-metals are ductile. done clear
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• question_answer40)
  Identify 'X' and 'Y' in the given chemical equation. 

  • \[X+YS{{O}_{4}}\to Y+XS{{O}_{4}}\]
  A)
  Na and Mg                         done clear
  B)
  Zn and Cu                           done clear
  C)
  Ag and K                             done clear
  D)
  H and \[Al\] done clear
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