Solved papers for JEE Main & Advanced JEE Main Solved Paper-2015

done JEE Main Solved Paper-2015 Total Questions - 30

• question_answer1) Which compound would give 5-keto-2-methyl hexanal upon ozonolysis ? [JEE Main Solved Paper-2015 ]
  A)
                                 
  done clear
  B)
                 
  done clear
  C)
                                 
  done clear
  D)
  
  done clear
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• question_answer2) Which of the vitamins given below is water soluble ? [JEE Main Solved Paper-2015 ]
  A)
  Vitamin E                            
  done clear
  B)
  Vitamin K
  done clear
  C)
  Vitamin C
  done clear
  D)
  Vitamin D
  done clear
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• question_answer3) Which one of the following alkaline earth metal sulphates has its hydration enthalpy greater than its lattice enthalpy ? [JEE Main Solved Paper-2015 ]
  A)
  \[BaS{{O}_{4}}\]                              
  done clear
  B)
  \[SrS{{O}_{4}}\]
  done clear
  C)
  \[CaS{{O}_{4}}\]                              
  done clear
  D)
  \[BeS{{O}_{4}}\]
  done clear
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• question_answer4) In the reaction the product E is : [JEE Main Solved Paper-2015 ]
  A)
             
  done clear
  B)
  
  done clear
  C)
                 
  done clear
  D)
  
  done clear
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• question_answer5) Sodium metal crystallizes in a body centred cubic lattice with a unit cell edge of \[4.29\overset{\text{o}}{\mathop{\text{A}}}\,\]. The radius of sodium atom is approximately : [JEE Main Solved Paper-2015 ]
  A)
  \[5.72\overset{\text{o}}{\mathop{\text{A}}}\,\]                  
  done clear
  B)
  \[0.93\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  C)
  \[1.86\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
  D)
  \[3.22\overset{\text{o}}{\mathop{\text{A}}}\,\]
  done clear
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• question_answer6) Which of the following compounds is not colored yellow ? [JEE Main Solved Paper-2015 ]
  A)
  \[{{(N{{H}_{4}})}_{3}}[As{{(M{{o}_{3}}{{O}_{10}})}_{4}}]\]                
  done clear
  B)
  \[BaCr{{O}_{4}}\]                
  done clear
  C)
  \[Z{{n}_{2}}[Fe{{(CN)}_{6}}]\]                
  done clear
  D)
  \[{{K}_{3}}[Co{{(N{{O}_{2}})}_{6}}\]
  done clear
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• question_answer7) Which of the following is the energy of a possible excited state of hydrogen ? [JEE Main Solved Paper-2015 ]
  A)
  - 3.4 eV                               
  done clear
  B)
  + 6.8 eV
  done clear
  C)
  + 13.6 eV                            
  done clear
  D)
  - 6.8 eV
  done clear
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• question_answer8) Which of the following compounds is not an antacid ? [JEE Main Solved Paper-2015 ]
  A)
  Phenelzine        
  done clear
  B)
  Ranitidine
  done clear
  C)
  Aluminium hydroxide
  done clear
  D)
  Cimetidine
  done clear
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• question_answer9) The ionic radii (in Å) of \[{{N}^{3-}},{{O}^{2-}}\]and \[{{F}^{-}}\] are respectively : [JEE Main Solved Paper-2015 ]
  A)
  1.71, 1.40 and 1.36
  done clear
  B)
  1.71, 1.36 and 1.40
  done clear
  C)
  1.36, 1.40 and 1.71
  done clear
  D)
  1.36, 1.71 and 1.40
  done clear
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• question_answer10) In the context of the Hall-Heroult process for the extraction of Al, which of the following statements is false? [JEE Main Solved Paper-2015 ]
  A)
  \[A{{l}^{3+}}\] is reduced at the cathode to form Al
  done clear
  B)
  \[N{{a}_{3}}Al{{F}_{6}}\] serves as the electrolyte
  done clear
  C)
  \[CO\] and \[C{{O}_{2}}\] are produced in this process
  done clear
  D)
  \[A{{l}_{2}}{{O}_{3}}\]is mixed with \[Ca{{F}_{2}}\] which lowers the melting point of the mixture and brings conductivity
  done clear
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• question_answer11) In the following sequence of reactions : Toluene \[\xrightarrow[{}]{KMn{{O}_{4}}}A\xrightarrow[{}]{SOC{{l}_{2}}}B\xrightarrow[BaS{{O}_{4}}]{{{H}_{2}}/Pd}C,\]the product C is: [JEE Main Solved Paper-2015 ]
  A)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}OH\]         
  done clear
  B)
  \[{{C}_{6}}{{H}_{5}}CHO\]
  done clear
  C)
  \[{{C}_{6}}{{H}_{5}}COOH\]        
  done clear
  D)
  \[{{C}_{6}}{{H}_{5}}C{{H}_{3}}\]
  done clear
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• question_answer12) Higher order (>3) reactions are rare due to : [JEE Main Solved Paper-2015 ]
  A)
  shifting of equilibrium towards reactants due to elastic collisions                
  done clear
  B)
  loss of active species on collision                
  done clear
  C)
  low probability of simultaneous collision of  all the reacting species
  done clear
  D)
  increase in entropy and activation energy as more molecules are involved
  done clear
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• question_answer13) Which of the following compounds will exhibit geometrical isomerism? [JEE Main Solved Paper-2015 ]
  A)
  2-Phenyl-1-butene
  done clear
  B)
  1,1-Diphenyl-1-propane
  done clear
  C)
  1-Phenyl-2-butene
  done clear
  D)
  3-Phenyl-1-butene
  done clear
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• question_answer14) Match the catalysts to the correct processes: [JEE Main Solved Paper-2015 ]

  Catalyst	Process
  (a) \[TiC{{l}_{3}}\]	(i) Wacker process
  (b) \[PdC{{l}_{2}}\]	(ii) Ziegler - Natta polymerization
  (c) \[CuC{{l}_{2}}\]	(iii) Contact process
  (d) \[{{V}_{2}}{{O}_{5}}\]	(iv) Deacon?s process

   
  A)
  (A)-(ii), (B)-(iii), (C)-(iv), (D) -(i)
  done clear
  B)
  (A)-(iii), (B)-(i), (C)-(ii), (D) -(iv)
  done clear
  C)
  (A)-(iii), (B)-(ii), (C)-(iv), (D) -(i)
  done clear
  D)
  (A)-(ii), (B)-(i), (C)-(iv), (D) -(iii)
  done clear
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• question_answer15) The intermolecular interaction that is dependent on the inverse cube of distance between the molecules is: [JEE Main Solved Paper-2015 ]
  A)
  London force
  done clear
  B)
  hydrogen bond
  done clear
  C)
  ion- ion interaction
  done clear
  D)
  ion-dipole interaction
  done clear
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• question_answer16) The molecular formula of a commercial resin used for exchanging ions in water softening is \[{{C}_{8}}{{H}_{7}}S{{O}_{3}}Na\]  (Mol. wt. 206). \[C{{a}^{2+}}\] ions by the resin when expressed in mole per gram resin ? [JEE Main Solved Paper-2015 ]
  A)
  \[\frac{2}{309}\]
  done clear
  B)
  \[\frac{1}{412}\]
  done clear
  C)
  \[\frac{1}{103}\]
  done clear
  D)
  \[\frac{1}{206}\]
  done clear
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• question_answer17) Two Faraday of electricity is passed through a solution of \[CuS{{O}_{4}}.\] The mass of copper deposited at the cathode is : (at. mass of Cu = 63.5 amu)                 [JEE Main Solved Paper-2015 ]
  A)
  2 g                                         
  done clear
  B)
  127 g
  done clear
  C)
  0 g                                         
  done clear
  D)
  63.5 g
  done clear
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• question_answer18) The number of geometric isomers that can exist for square planar \[{{\left[ Pt\left( Cl \right)\left( py \right)\left( N{{H}_{3}} \right)\left( N{{H}_{2}}OH \right) \right]}^{+}}\] is \[\text{(py}\,\text{=}\,\,\text{pyridine):}\] [JEE Main Solved Paper-2015 ]
  A)
   4                                            
  done clear
  B)
  6
  done clear
  C)
  2                                             
  done clear
  D)
  3
  done clear
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• question_answer19) Carius method of estimation of halogens, 250 mg of an organic compound gave 141 mg of AgBr. The percentage of bromine in the compound is: (at. mass Ag = 108; Br = 80) [JEE Main Solved Paper-2015 ]
  A)
  48                                          
  done clear
  B)
  60
  done clear
  C)
  24          
  done clear
  D)
  36
  done clear
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• question_answer20) The colour of \[KMn{{O}_{4}}\] is due to: [JEE Main Solved Paper-2015 ]
  A)
  \[L\to M\] charge transfer transition
  done clear
  B)
  \[\sigma \to \sigma *\]  transition
  done clear
  C)
  \[M\to L\] charge transfer transition
  done clear
  D)
  \[d-d\] transition
  done clear
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• question_answer21) The synthesis of alkyl fluorides is best accomplished by : [JEE Main Solved Paper-2015 ]
  A)
  Finkelstein reaction
  done clear
  B)
  Swarts reaction
  done clear
  C)
  Free radical fluorination
  done clear
  D)
  Sandmeyer's reaction
  done clear
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• question_answer22) 3g of activated charcoal was added to 50mL acetic solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram charcoal) is : [JEE Main Solved Paper-2015 ]
  A)
  42 mg                   
  done clear
  B)
  54 mg
  done clear
  C)
  18 mg   
  done clear
  D)
  36 mg
  done clear
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• question_answer23) The vapour pressure of acetone at 200C is 185 torr. When 1.2 g of a non ? volatile substance was dissolved in 100 g of acetone at 200C, its vapour pressure was 183 torr. The molar mass (g mol?1) of the substance is [JEE Main Solved Paper-2015 ]
  A)
  128                                        
  done clear
  B)
  488
  done clear
  C)
  32                                          
  done clear
  D)
  64
  done clear
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• question_answer24) Which among the following is the most reactive ? [JEE Main Solved Paper-2015 ]
  A)
  \[{{I}_{2}}\]                                       
  done clear
  B)
  \[ICl\]
  done clear
  C)
  \[C{{l}_{2}}\]                                     
  done clear
  D)
  \[B{{r}_{2}}\]
  done clear
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• question_answer25) The standard Gibbs energy change at 300K for the reaction \[2AB+C\]At a given time, the composition of the reaction mixture is\[\left[ A \right]=\frac{1}{2},\left[ B \right]=2\]and \[\left[ C \right]=\frac{1}{2}.\]  The reaction proceeds in the : \[[R=8.314J/Kmol,e=2.718]\] [JEE Main Solved Paper-2015 ]
  A)
  forward direction because \[Q<{{K}_{C}}\]
  done clear
  B)
  reverse direction because \[Q<{{K}_{C}}\]
  done clear
  C)
  forward direction because \[Q>{{K}_{C}}\]
  done clear
  D)
  reverse direction beacuse \[Q>{{K}_{C}}\]
  done clear
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• question_answer26) Assertion : Nitrogen and oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen. Reason : The reaction between nitrogen and oxygen requires high temperature. [JEE Main Solved Paper-2015 ]
  A)
  The assertion is incorrect, but the reason is correct                
  done clear
  B)
  Both the assertion and reason are incorrect                
  done clear
  C)
  Both assertion and reason are correct, and the reason is the correct explanation for the assertion
  done clear
  D)
  Both assertion and reason are correct, but reason is not the correct explanation for the assertion
  done clear
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• question_answer27) Which one has the highest boiling point ? [JEE Main Solved Paper-2015 ]
  A)
  Kr                                           
  done clear
  B)
  Xe
  done clear
  C)
  He                                         
  done clear
  D)
  Ne
  done clear
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• question_answer28) Which polymer is used in the manufacture of paints and lacquers ? [JEE Main Solved Paper-2015 ]
  A)
  Polypropene     
  done clear
  B)
  Poly vinyl chloride
  done clear
  C)
  Bakelite                               
  done clear
  D)
  Glyptal
  done clear
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• question_answer29) The following reaction is performed at \[298K.2NO(g)+{{O}_{2}}2N{{O}_{2}}(g)\] The standard free energy of formation of \[NO(g)\] is 86.6 kJ/mol at 298 K. What is the standard free energy of formation of \[N{{O}_{2}}(g)\] at 298K? \[\left( {{K}_{p}}=1.6\times {{10}^{12}} \right)\] [JEE Main Solved Paper-2015 ]
  A)
  \[86600-\frac{\ln \left( 1.6\times {{10}^{12}} \right)}{R\left( 298 \right)}\]
  done clear
  B)
  \[0.5\left[ 2\times 86,600-R\left( 298 \right)\ln \left( 1.6\times {{10}^{12}} \right) \right]\]
  done clear
  C)
  \[R\left( 298 \right)\ln \left( 1.6\times {{10}^{12}} \right)-86600\]
  done clear
  D)
  \[86600+R\left( 298 \right)\ln \left( 1.6\times {{10}^{12}} \right)\]
  done clear
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• question_answer30) From the following statements regarding \[{{H}_{2}}{{O}_{2}},\] choose the incorrect statement : [JEE Main Solved Paper-2015 ]
  A)
  It has to be stored in plastic or wax lined glass bottles in dark
  done clear
  B)
  It has to be kept away from dust
  done clear
  C)
  It can act only as an oxidizing agent
  done clear
  D)
  It decomposes on exposure to light
  done clear
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