AIPMT 2005 Prelims

170 Questions • 170 Minutes • 2005

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Q41
Which amongst the following is the most stable carbocation ?
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Q42
Products of the following reaction : CH₃C≡C·CH₂CH₃ —[(1) O₃, (2) Hydrolysis]→ ...... are :
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Q43
Which one of the following pairs represents stereoisomerism ?
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Q44
Aniline in a set of reactions yielded a product D. C₆H₅NH₂ —(NaNO₂/HCl)→ A —(CuCN)→ B —(H₂/Ni)→ C —(HNO₂)→ D The structure of the product D would be :
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Q45
The correct order in which the O — O bond length increases in the following is :
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Q46
The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is : (Atomic mass Al = 27)
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Q47
In a set of reactions, acetic acid yielded a product D. CH₃COOH —(SOCl₂)→ A —(Benzene, Anhyd. AlCl₃)→ B —(HCN)→ C —(HOH)→ D The structure of D would be :
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Q48
The number of moles of KMnO₄ reduced by one mole of KI in alkaline medium is :
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Q49
Which of the following molecules has trigonal planar geometry ?
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Q50
The aqueous solution containing which one of the following ions will be colourless ? (Atomic no. : Sc = 21, Fe = 26, Ti = 22, Mn = 25)
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Q51
Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy ?
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Q52
Which one of the following compounds is most acidic ?
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Q53
A reaction occurs spontaneously if :
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Q54
The monomer of the polymer : (CH₃)₃C–CH₂–C⁺(CH₃)₂ is :
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Q55
The correct sequence of increasing covalent character is represented by :
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Q56
What is the correct relationship between the pHs of isomolar solutions of sodium oxide (pH₁), sodium sulphide (pH₂), sodium selenide (pH₃) and sodium telluride (pH₄) ?
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Q57
Which of the following pairs of a chemical reaction is certain to result in a spontaneous reaction ?
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Q58
The vapour pressure of two liquids P and Q are 80 and 60 torr, respectively. The total vapour pressure of solution obtained by mixing 3 moles of P and 2 moles of Q would be :
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Q59
For a first order reaction A → B, the reaction rate at reactant concentration of 0.01 M is found to be 2.0 × 10⁻⁵ mol L⁻¹ s⁻¹. The half life period of the reaction is :
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Q60
Which of the following is the electron deficient molecule ?
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Paper Info
  • Exam: AIPMT Prelims
  • Year: 2005
  • Questions: 170
  • Duration: 170 mins
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