Solved papers for NEET Chemistry NEET PYQ-Metallurgy

done NEET PYQ-Metallurgy Total Questions - 17

• question_answer1) Bell-metal is an alloy of:                 [AIPMT 1999]
  A)
  \[Cu+Pb\]
  done clear
  B)
  \[Cu+Sn\]
  done clear
  C)
              \[Cu+Zn\]
  done clear
  D)
  \[Cu+Ni\]
  done clear
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• question_answer2) Cassiterite is an ore of:                [AIPMT 1999]
  A)
  Mn
  done clear
  B)
  Ni
  done clear
  C)
  Sb
  done clear
  D)
  Sn
  done clear
  View Answer play_arrow

• question_answer3) Percentage of lead in lead pencil is: [AIPMT 1999]
  A)
  zero
  done clear
  B)
  20
  done clear
  C)
  80
  done clear
  D)
  70
  done clear
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• question_answer4) The method of zone refining of metals is based on the principle of:                            [AIPMT 2003]
  A)
  greater noble character of the solid metal than that of the impurity
  done clear
  B)
  greater solubility of the impurity in the molten state than in the solid
  done clear
  C)
  greater mobility of the pure metal than that of impurity
  done clear
  D)
  higher melting point of the impurity than that of the pure metal
  done clear
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• question_answer5) Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?       [AIPMT (S) 2007]
  A)
  Carbon and hydrogen are suitable reducing agents for metal sulphides
  done clear
  B)
  The \[\Delta \]fG° of the sulphide is greater than those for CS2 andH2S
  done clear
  C)
  The \[\Delta \]fG°  is  negative  for roasting  of sulphide ore to oxide
  done clear
  D)
  Roasting of the sulphide to the oxide is thermodynamicaliy feasible
  done clear
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• question_answer6) Sulphide ores of metals are usually concentrated by froth flotation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching? [AIPMT (S) 2007]
  A)
  Argentite
  done clear
  B)
  Galena 
  done clear
  C)
  Copper pyrite
  done clear
  D)
  Sphalerite
  done clear
  View Answer play_arrow

• question_answer7) Which of the following pairs of metals is purified by van Arkel method?          [AIPMT (S) 2011]
  A)
  Zr and Ti
  done clear
  B)
  Ag and Au
  done clear
  C)
  Ni and Fe
  done clear
  D)
  Ga and In
  done clear
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• question_answer8) The following reactions take place in the blast furnace in the preparation of impure iron. Identify the reaction pertaining to the formation of the slag.                                  [AIPMT (M) 2011]
  A)
  \[F{{e}_{2}}{{O}_{3}}(s)=3CO(g)\xrightarrow[{}]{{}}2Fe(l)+3C{{O}_{2}}(g)\]
  done clear
  B)
  \[CaC{{O}_{3}}(s)\xrightarrow[{}]{{}}CaO(s)+C{{O}_{2}}(g)\]
  done clear
  C)
  \[CaO(s)+Si{{O}_{2}}(s)\xrightarrow[{}]{{}}CaSi{{O}_{3}}(s)\]
  done clear
  D)
  \[2C(s)+{{O}_{2}}(g)\xrightarrow[{}]{{}}2CO(g)\]
  done clear
  View Answer play_arrow

• question_answer9) Which one of the following is a mineral of iron?                                   [AIPMT (S) 2012]
  A)
  Malachite
  done clear
  B)
  Cassiterite
  done clear
  C)
  Pyrolusite
  done clear
  D)
  Magnetite
  done clear
  View Answer play_arrow

• question_answer10) Identify the alloy containing a non-metal as a constituent in it.                           [AIPMT (S) 2012]
  A)
  Invar
  done clear
  B)
  Steel    
  done clear
  C)
  Bell metal
  done clear
  D)
  Bronze
  done clear
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• question_answer11) 

  "Metals are usually not found as nitrates in their ores". Out of the following two (a and b) reasons which is/are true for the above observation?

  I. Metal nitrates are highly unstable. [NEET 2015 ]

  II. Metal nitrates are highly soluble in water.

  A)
  I and II are true
  done clear
  B)
  I and II are false
  done clear
  C)
  I is false but II is true      
  done clear
  D)
  I is true but II is false
  done clear
  View Answer play_arrow

• question_answer12) In the extraction of copper from its sulphide ore, the metal finally obtained by the reduction of cuprous oxide with                [NEET 2015 (Re)]
  A)
  iron (ll) sulphide
  done clear
  B)
  carbon monoxide
  done clear
  C)
  copper (I) sulphide
  done clear
  D)
  sulphur dioxide
  done clear
  View Answer play_arrow

• question_answer13) 

  Match items of Column I with the items of Column II and asign the correct code : [NEET 2016]

  Column - I Column - II [A] Cyanide process (I) Ultrapure Ge [B] Froth floatation process (II) Dressing of ZnS [C] Electrolytic reduction (III) Extraction of Al [D] Zone refining (iv) Extraction of Au (v) Purification of Ni

  Code:
  A)
  A-(iv),   B-(ii),    C-(iii),    D-(i)
  done clear
  B)
  A-(ii),    B-(iii),    C-(i),     D-(v)
  done clear
  C)
  A-(i),     B-(ii),    C-(iii),    D-(iv)
  done clear
  D)
  A-(iii),    B-(iv),   C-(v),    D-(i)
  done clear
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• question_answer14) Extraction of gold and silver involves leaching with \[C{{N}^{-}}\]ion. Silver is later recovered by [NEET-2017]
  A)
  Displacement with Zn
  done clear
  B)
  Liquation
  done clear
  C)
  Distillation
  done clear
  D)
  Zone refining
  done clear
  View Answer play_arrow

• question_answer15) Considering Ellingham diagram, which of the following metals can be used to reduce alumina? [NEET - 2018]
  A)
  Mg
  done clear
  B)
  Zn
  done clear
  C)
  Fe
  done clear
  D)
  Cu
  done clear
  View Answer play_arrow

• question_answer16) Which one is malachite from the following? [NEET 2019]
  A)
  \[F{{e}_{3}}{{O}_{4}}\]         
  done clear
  B)
  \[CuC{{O}_{3}}\cdot Cu{{(OH)}_{2}}\]
  done clear
  C)
  \[CuFe{{S}_{2}}\]
  done clear
  D)
  \[Cu{{(OH)}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer17) Identify the correct statement from the following: [NEET 2020]
  A)
  Blister copper has blistered appearance due to evolution of \[C{{O}_{2}}\].
  done clear
  B)
  Vapour phase refining is carried out for Nickel by Van Arkel method.
  done clear
  C)
  Pig iron can be moulded into a variety of shapes.
  done clear
  D)
  Wrought iron is impure iron with 4% carbon.
  done clear
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