Solved papers for JEE Main & Advanced JEE Main Paper (Held On 19 April 2014)

done JEE Main Paper (Held On 19 April 2014) Total Questions - 30

• question_answer1) Ionization energy of gaseous Na atoms is \[495.5\,\text{kJ}\,\text{mo}{{\text{l}}^{-1}}\] The lowest possible frequency of light that ionizes a sodium atom is \[(h=6.626\times {{10}^{-34}}Js,{{N}_{A}}=6.022\times {{10}^{23}}mo{{l}^{-1}})\]     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[7.50\times {{10}^{4}}{{s}^{-1}}\]           
  done clear
  B)
  \[4.76\times {{10}^{14}}{{s}^{-1}}\]
  done clear
  C)
  \[3.15\times {{10}^{15}}{{s}^{-1}}\]        
  done clear
  D)
  \[1.24\times {{10}^{15}}{{s}^{-1}}\]
  done clear
  View Answer play_arrow

• question_answer2) Choose the correct statement with respect to the vapour pressure of a liquid among the following:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Increases linearly with increasing temperature
  done clear
  B)
  Increases non-linearly with increasing temperature
  done clear
  C)
  Decreases linearly with increasing temperature
  done clear
  D)
  Decreases non-linearly with increasing temperature
  done clear
  View Answer play_arrow

• question_answer3) Which one of the following molecules is paramagnetic?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[{{N}_{2}}\]                                     
  done clear
  B)
  NO
  done clear
  C)
  CO                                         
  done clear
  D)
  \[{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer4) Zirconium phosphate \[[Z{{r}_{3}}{{(P{{O}_{4}})}_{4}}]\]dissociates into three zirconium cations of charge + 4 and four phosphate anions of charge ? 3. If molar solubility of zirconium phosphate is denoted by S and its solubility product by \[{{K}_{sp}}\] then which of the following relationship between S and \[{{K}_{sp}}\]is correct?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[S=\{{{K}_{sp}}/{{(6912)}^{1/7}}\}\]
  done clear
  B)
  \[S={{\{{{K}_{sp}}/144\}}^{1/7}}\]
  done clear
  C)
  \[S={{\{{{K}_{sp}}/6912\}}^{1/7}}\]
  done clear
  D)
  \[S={{\{{{K}_{sp}}/6912\}}^{7}}\]
  done clear
  View Answer play_arrow

• question_answer5) For the decomposition of the compound, represented as\[N{{H}_{2}}COON{{H}_{4}}(s)2N{{H}_{3}}(g)+C{{O}_{2}}(g)\] the \[{{K}_{p}}=2.9\times {{10}^{-5}}at{{m}^{3}}.\] If the reaction is started with 1 mol of the compound, the total pressure at equilibrium would be :     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[1.94\times {{10}^{-2}}atm\]    
  done clear
  B)
  \[5.82\times {{10}^{-2}}atm\]
  done clear
  C)
  \[7.66\times {{10}^{-2}}atm\]    
  done clear
  D)
  \[38.8\times {{10}^{-2}}atm\]
  done clear
  View Answer play_arrow

• question_answer6) For the reaction, \[3A+2B\to C+D,\] the differential rate law can be written as:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[\frac{1}{3}\frac{d\left[ A \right]}{dt}=\frac{d\left[ C \right]}{dt}=k{{\left[ A \right]}^{n}}{{\left[ B \right]}^{m}}\]
  done clear
  B)
  \[-\frac{d\left[ A \right]}{dt}=\frac{d\left[ C \right]}{dt}=k{{\left[ A \right]}^{n}}{{\left[ B \right]}^{m}}\]
  done clear
  C)
  \[+\frac{1}{3}\frac{d\left[ A \right]}{dt}=-\frac{d\left[ C \right]}{dt}=k{{\left[ A \right]}^{n}}{{\left[ B \right]}^{m}}\]
  done clear
  D)
  \[-\frac{1}{3}\frac{d\left[ A \right]}{dt}=\frac{d\left[ C \right]}{dt}=k{{\left[ A \right]}^{n}}{{\left[ B \right]}^{m}}\]
  done clear
  View Answer play_arrow

• question_answer7) Sulphur dioxide and oxygen were allowed to diffuse through a porous partition. \[20d{{m}^{3}}\]of \[S{{O}_{2}}\] diffuses through the porous partition in 60 seconds. The volume of \[{{O}_{2}}\] in \[d{{m}^{3}}\]which diffuses under the similar condition in 30 seconds will be (atomic mass of sulphur = 32 u):     JEE Main Online Paper (Held On 19 April 2016)
  A)
  7.09                       
  done clear
  B)
  14.1
  done clear
  C)
  10.0                                       
  done clear
  D)
  28.2
  done clear
  View Answer play_arrow

• question_answer8) The observed osmotic pressure for a 0.10 M solution of \[Fe{{(N{{H}_{4}})}_{2}}{{(S{{O}_{4}})}_{2}}\]at 25°C is 10.8 atm. The expected and experimental (observed) values of van?t Hoff factor (i) will be respectively: \[(R=0.082Lamt\,{{k}^{-1}}mo{{l}^{-1}})\]     JEE Main Online Paper (Held On 19 April 2016)
  A)
  5 and 4.42           
  done clear
  B)
  4 and 4.00
  done clear
  C)
  5 and 3.42                           
  done clear
  D)
  3 and 5.42
  done clear
  View Answer play_arrow

• question_answer9) The total number of octahedral void (s) per atom present in a cubic close packed structure is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  2                                             
  done clear
  B)
  4
  done clear
  C)
  1                                             
  done clear
  D)
  3
  done clear
  View Answer play_arrow

• question_answer10) For an ideal solution of two components A and B, which of the following is true?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[\Delta {{H}_{mixing}}<0\] (zero)
  done clear
  B)
  \[\Delta {{H}_{mixing}}>0\] (zero)
  done clear
  C)
  A - B interaction is stronger than A - A and B - B interactions
  done clear
  D)
  A - A, B - B and A - B interactions are identical.
  done clear
  View Answer play_arrow

• question_answer11) Consider the reaction: \[{{H}_{2}}S{{O}_{3}}(aq)+S{{n}^{4+}}(aq)+{{H}_{2}}O(l)\] \[\to S{{n}^{2+}}(aq)+HSO_{4}^{-}(aq)+3{{H}^{+}}(aq)\] Which of the following statements is correct?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[S{{n}^{4+}}\]is the oxidizing agent because it undergoes oxidation
  done clear
  B)
  \[S{{n}^{4+}}\]is the reducing agent because it undergoes oxidation
  done clear
  C)
  \[{{H}_{2}}S{{O}_{3}}\]is the reducing agent because it undergoes oxidation
  done clear
  D)
  \[{{H}_{2}}S{{O}_{3}}\]is the reducing agent because it undergoes reduction
  done clear
  View Answer play_arrow

• question_answer12) Which one of the following has largest ionic radius?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[L{{i}^{+}}\]                                     
  done clear
  B)
  \[O_{2}^{2-}\]
  done clear
  C)
  \[{{B}^{3+}}\]                                   
  done clear
  D)
  \[{{F}^{-}}\]
  done clear
  View Answer play_arrow

• question_answer13) An octahedral complex with molecular composition \[N{{H}_{3}}.Cl.S{{O}_{4}}\]has two isomers, A and B. The solution of A gives a white precipitate with \[AgN{{O}_{3}}\] solution and the solution of B gives white precipitate with \[BaC{{l}_{2}}\] solution. The type of isomerism exhibited by the complex is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Linkage isomerism
  done clear
  B)
  Ionisation isomerism
  done clear
  C)
  Coordinate isomerism
  done clear
  D)
  Geometrical isomerism
  done clear
  View Answer play_arrow

• question_answer14) How many electrons are involved in the following redox reaction? \[C{{r}_{2}}O_{7}^{2-}+F{{e}^{2+}}+{{C}_{2}}O_{4}^{2-}\]\[\to C{{r}^{3+}}+F{{e}^{3+}}+C{{O}_{2}}\](Unbalanced)     JEE Main Online Paper (Held On 19 April 2016)
  A)
  3             
  done clear
  B)
  4
  done clear
  C)
  6                                             
  done clear
  D)
  5
  done clear
  View Answer play_arrow

• question_answer15) Amongst \[LiCl,RbCl,BeC{{l}_{2}}\] and \[MgC{{l}_{2}}\] the compounds with the greatest and the least ionic character, respectively are:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  LiCl and RbCl      
  done clear
  B)
  RbCl and \[BeC{{l}_{2}}\]
  done clear
  C)
  \[MgC{{l}_{2}}\] and \[BeC{{l}_{2}}\]     
  done clear
  D)
  RbCl and \[MgC{{l}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer16) Nickel (Z = 28) combines with a uninegative monodentate ligand to form a diamagnetic complex \[{{[Ni{{L}_{4}}]}^{2-}}.\]The hybridisation involved and the number of unpaired electrons present in the complex are respectively:   JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[s{{p}^{3}},\] two                          
  done clear
  B)
  \[ds{{p}^{2}},\]zero
  done clear
  C)
  \[ds{{p}^{2}},\]one                        
  done clear
  D)
  \[s{{p}^{3}},\]zero
  done clear
  View Answer play_arrow

• question_answer17) Which of these statements is not true?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[N{{O}^{+}}\]is not isoelectronic with\[{{O}_{2}}\]
  done clear
  B)
  B is always covalent in its compounds
  done clear
  C)
  In aqueous solution, the \[T{{l}^{+}}\] ion is much more stable than Tl (III)
  done clear
  D)
  \[LiAl{{H}_{4}}\]is a versatile reducing agent in organic synthesis.
  done clear
  View Answer play_arrow

• question_answer18) Example of a three-dimensional silicate is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Zeolites                               
  done clear
  B)
  Ultramarines
  done clear
  C)
  Feldspars                            
  done clear
  D)
  Beryls
  done clear
  View Answer play_arrow

• question_answer19) Amongst the following, identify the species with an atom in + 6 oxidation state:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[{{[Mn{{O}_{4}}]}^{-}}\]                             
  done clear
  B)
  \[{{[Cr{{(CN)}_{6}}]}^{3-}}\]
  done clear
  C)
  \[C{{r}_{2}}{{O}_{3}}\]                  
  done clear
  D)
  \[Cr{{O}_{2}}C{{l}_{2}}\]
  done clear
  View Answer play_arrow

• question_answer20) Which one of the following ores is known as Malachite:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[C{{u}_{2}}O\]
  done clear
  B)
  \[C{{u}_{2}}S\]
  done clear
  C)
  \[CuFe{{S}_{2}}\]                            
  done clear
  D)
  \[Cu{{(OH)}_{2}}.CuC{{O}_{3}}\]
  done clear
  View Answer play_arrow

• question_answer21) The major product formed when 1, 1, 1-trichloro-propane is treated with aqueous potassium hydroxide is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Propyne                              
  done clear
  B)
  1-Propanol
  done clear
  C)
  2-Propanol                         
  done clear
  D)
  Propionic acid
  done clear
  View Answer play_arrow

• question_answer22) Which one of the following is an example of thermosetting polymers?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Neoprene                          
  done clear
  B)
  Buna-N
  done clear
  C)
  Nylon 6, 6                           
  done clear
  D)
  Bakelite
  done clear
  View Answer play_arrow

• question_answer23) The correct IUPAC name of the following compound is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  4 - methyl - 3 - ethylhexane
  done clear
  B)
  3 - ethyl - 4 - methylhexane
  done clear
  C)
  3, 4 - ethylmethylhexane
  done clear
  D)
  4 - ethyl - 3 - methylhexane
  done clear
  View Answer play_arrow

• question_answer24) Which one of the following substituents at para-position is most effective in stabilizing the phenoxide O - ion?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  \[-C{{H}_{3}}\]                 
  done clear
  B)
  \[-OC{{H}_{3}}\]
  done clear
  C)
  \[-COC{{H}_{3}}\]           
  done clear
  D)
  \[-C{{H}_{2}}OH\]
  done clear
  View Answer play_arrow

• question_answer25) The final product formed when Methyl amine is treated with \[NaN{{O}_{2}}\] and HCl is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Diazomethane
  done clear
  B)
   Methylalcohol
  done clear
  C)
  Methylcyanide
  done clear
  D)
  Nitromethane
  done clear
  View Answer play_arrow

• question_answer26) Which one of the following compounds will not be soluble in sodium bicarbonate?     JEE Main Online Paper (Held On 19 April 2016)
  A)
  2, 4, 6 - Trinitrophenol
  done clear
  B)
  Benzoic acid
  done clear
  C)
  o-Nitrophenol
  done clear
  D)
  Benzene sulphonic acid
  done clear
  View Answer play_arrow

• question_answer27) Williamson synthesis of ether is an example of:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Nucleophilic addition
  done clear
  B)
  Electrophilic addition
  done clear
  C)
  Electrophilic substitution
  done clear
  D)
  Nucleophilic substitution
  done clear
  View Answer play_arrow

• question_answer28) The reason for double helical structure of DNA is the operation of:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Electrostatic attractions
  done clear
  B)
  van der Waals forces
  done clear
  C)
  Dipole - Dipole interactions
  done clear
  D)
  Hydrogen bonding
  done clear
  View Answer play_arrow

• question_answer29) Among the following organic acids, the acid present in rancid butter is:     JEE Main Online Paper (Held On 19 April 2016)
  A)
  Pyruvic acid                       
  done clear
  B)
  Lactic acid
  done clear
  C)
  Butyric acid        
  done clear
  D)
  Acetic acid
  done clear
  View Answer play_arrow

• question_answer30) In a set of reactions p-nitrotoluene yielded a product E. \[\xrightarrow[HCl]{NaN{{O}_{2}}}D\xrightarrow[HBr]{CuBr}E\] The product E would be:     JEE Main Online Paper (Held On 19 April 2016)
  A)
                                                 
  done clear
  B)
  
  done clear
  C)
                 
  done clear
  D)
  
  done clear
  View Answer play_arrow