Solved papers for JEE Main & Advanced JEE Main Paper (Held On 10 April 2016)

done JEE Main Paper (Held On 10 April 2016) Total Questions - 30

• question_answer1) The correct statement about the synthesis of erythritol \[(C{{(C{{H}_{2}}OH)}_{4}})\]used in the preparation of PETN is:   JEE Main Online Paper (Held On 10 April 2016)
  A)
  The synthesis requires two aldol condensations and two Cannizzaro reactions.                
  done clear
  B)
  Alpha hydrogens of ethanol and methanol are involved in this reaction.                
  done clear
  C)
  The synthesis requires four aldol condensations between methanol and ethanol.                
  done clear
  D)
  The synthesis requires three aldol condensations and one Cannizzaro reaction.
  done clear
  View Answer play_arrow

• question_answer2) The following statements concern elements in the periodic table. Which of the following is true?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  The Group 13 elements are all metals.
  done clear
  B)
  All the elements in Group 17 are gases.
  done clear
  C)
  Elements of Group 16 have lower ionization enthalpy values compared to those of Group 15 in the corresponding periods.
  done clear
  D)
  For Group 15 elements, the stability of +5 oxidation state increases down the group.
  done clear
  View Answer play_arrow

• question_answer3) Identify the incorrect statement:   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Rhombic and monoclinic sulphur have S8 molecules.
  done clear
  B)
  \[{{S}_{8}}\] ring has a crown shape.
  done clear
  C)
  \[{{S}_{2}}\] is paramagnetic like oxygen.
  done clear
  D)
  The S-S-S bond angles in the \[{{S}_{8}}\]and \[{{S}_{6}}\] rings are the same.
  done clear
  View Answer play_arrow

• question_answer4) Assertion: Among the carbon allotropes, diamond is an insulator, Whereas, graphite is a good conductor of electricity. Reason: Hybridization of carbon in diamond and graphite are \[s{{p}^{3}}\]and \[s{{p}^{2}},\]respectively.   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.
  done clear
  B)
  Assertion is incorrect statement, but the reason is correct.
  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 incorrect.
  done clear
  View Answer play_arrow

• question_answer5) The "N" which does not contribute to the basicity for the compound is :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  N 7                                        
  done clear
  B)
  N 1
  done clear
  C)
  N 9                        
  done clear
  D)
  N 3
  done clear
  View Answer play_arrow

• question_answer6) Bromination of cyclohexene under conditions given below yields:   JEE Main Online Paper (Held On 10 April 2016)
  A)
       
  done clear
  B)
  
  done clear
  C)
           
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer7) The commercial name for calcium oxide is:   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Quick lime          
  done clear
  B)
  Milk of lime
  done clear
  C)
  Slaked lime                        
  done clear
  D)
  Limestone
  done clear
  View Answer play_arrow

• question_answer8) Which one of the following reagents is not suitable for the elimination reaction ?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  NaI        
  done clear
  B)
                                                                                   \[NaOH/{{H}_{2}}O-EtOH\]
  done clear
  C)
                                                                                         \[NaOH/{{H}_{2}}O\]
  done clear
  D)
                                                                                              \[NaOEt/EtOH\]
  done clear
  View Answer play_arrow

• question_answer9) Which of the following is a bactericidal antibiotic?
  A)
  Erythromycin    
  done clear
  B)
  Tetracycline
  done clear
  C)
  Ofloxacin                
  done clear
  D)
  Chloramphenicol
  done clear
  View Answer play_arrow

• question_answer10) A solid XY kept in an evacuated sealed container undergoes decomposition to form a mixture of gases X and Y at temperature T. The equilibrium pressure is 10 bar in this vessel.                                                                                                 \[{{K}_{P}}\] for this reaction is :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  25                                          
  done clear
  B)
  5
  done clear
  C)
  0                                             
  done clear
  D)
  100
  done clear
  View Answer play_arrow

• question_answer11) The transition metal ions responsible for color in ruby and emerald are, respectively :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  \[\text{C}{{\text{r}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{r}}^{\text{3+}}}\]
  done clear
  B)
  \[\text{C}{{\text{o}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{o}}^{\text{3+}}}\]
  done clear
  C)
  \[\text{C}{{\text{o}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{r}}^{\text{3+}}}\]         
  done clear
  D)
  \[\text{C}{{\text{r}}^{\text{3+}}}\,\text{and}\,\,\text{C}{{\text{o}}^{\text{3+}}}\]
  done clear
  View Answer play_arrow

• question_answer12) Which of the following polymers is synthesized using a free radical polymerization technique?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Teflon
  done clear
  B)
  Melamine polymer                
  done clear
  C)
  Nylon 6,6                                            
  done clear
  D)
  Terylene
  done clear
  View Answer play_arrow

• question_answer13) Extraction of copper by smelting uses silica as an additive to remove :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  FeS                                        
  done clear
  B)
  FeO
  done clear
  C)
  \[C{{u}_{2}}S\]                 
  done clear
  D)
  \[C{{u}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer14) Initially, the root mean square (rms) velocity of \[{{N}_{2}}\]molecules at certain temperature is u. If this temperature is doubled and all the nitrogen molecules dissociate into nitrogen atoms, then the new rms velocity will be :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  2 u         
  done clear
  B)
  14 u
  done clear
  C)
  u / 2                      
  done clear
  D)
  4 u
  done clear
  View Answer play_arrow

• question_answer15) Gold numbers of some colloids are : Gelatin : 0.005 - 0.01, Gum Arabic : 0.15 - 0.25 ; Ole ate : 0.04 - 1.0 ; Starch : 15 - 25. Which among these is a better protective colloid ?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Gelatin
  done clear
  B)
  Starch
  done clear
  C)
  Gum Arabic                       
  done clear
  D)
  Ole ate
  done clear
  View Answer play_arrow

• question_answer16) Fluorination of an aromatic ring is easily accomplished by treating a diazonium salt with HBF4. Which of the following conditions is correct about this reaction?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Only heat           
  done clear
  B)
  \[NaN{{O}_{2}}/Cu\]
  done clear
  C)
  \[C{{u}_{2}}O/{{H}_{2}}O\]                         
  done clear
  D)
  \[NaF/Cu\]
  done clear
  View Answer play_arrow

• question_answer17) Identify the correct statement:   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Corrosion of iron can be minimized by forming an impermeable barrier at its surface.
  done clear
  B)
  Iron corrodes in oxygen-free water.
  done clear
  C)
  Iron corrodes more rapidly in salt water because its electrochemical potential is higher.
  done clear
  D)
  Corrosion of iron can be minimized by forming a contact with another metal with a higher reduction potential.
  done clear
  View Answer play_arrow

• question_answer18) An aqueous solution of a salt \[M{{X}_{2}}\] at certain temperature has a van't Hoff factor of 2. The degree of dissociation for this solution of the salt is :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  0.67                       
  done clear
  B)
  0.33
  done clear
  C)
  0.80                                       
  done clear
  D)
  0.50
  done clear
  View Answer play_arrow

• question_answer19) Oxidation of succinate ion produces ethylene and carbon dioxide gases. On passing 0.2 Faraday electricity through an aqueous solution of potassium succinate, the total volume of gases (at both cathode and anode) at STP (1 atm and 273 K) is :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  6.72 L                    
  done clear
  B)
  2.24 L
  done clear
  C)
  4.48 L                    
  done clear
  D)
  8.96 L
  done clear
  View Answer play_arrow

• question_answer20) If 100 mole of \[{{H}_{2}}{{O}_{2}}\]decompose at 1 bar and 300 K, the work done (kJ) by one mole of\[{{O}_{2}}(g)\] as it expands against 1 bar pressure is : \[2{{H}_{2}}{{O}_{2}}(l)2{{H}_{2}}O(l)+{{O}_{2}}(g)\] \[(R=8.3J\,{{K}^{-1}}mo{{l}^{-1}})\]   JEE Main Online Paper (Held On 10 April 2016)
  A)
  498.00                  
  done clear
  B)
  62.25
  done clear
  C)
  124.50
  done clear
  D)
  249.00
  done clear
  View Answer play_arrow

• question_answer21) Which of the following is an example of homoleptic complex ?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  \[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]\]     
  done clear
  B)
  \[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]
  done clear
  C)
  \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\] 
  done clear
  D)
  \[[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]\]
  done clear
  View Answer play_arrow

• question_answer22) The bond angle H - X - H is the greatest in the compound :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  \[N{{H}_{3}}\]                                  
  done clear
  B)
  \[P{{H}_{3}}\]
  done clear
  C)
  \[C{{H}_{4}}\]   
  done clear
  D)
  \[{{H}_{2}}O\]
  done clear
  View Answer play_arrow

• question_answer23) The rate law for the reaction below is given by the expression k [A][B] \[A+B\to \]Product If the concentration of B is increased from 0.1 to 0.3 mole, keeping the value of A at 0.1 mole, the rate constant will be :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  9 k                                         
  done clear
  B)
  3 k
  done clear
  C)
  k/3                                        
  done clear
  D)
  k
  done clear
  View Answer play_arrow

• question_answer24) Sodium extract is heated with concentrated \[HN{{O}_{3}}\] before testing for halogens because :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Ag reacts faster with halides in acidic medium.
  done clear
  B)
  Silver halides are totally insoluble in nitric acid.
  done clear
  C)
  \[A{{g}_{2}}S\]and \[AgCN\] are soluble in acidic medium.
  done clear
  D)
  \[{{S}^{2-}}\]and \[C{{N}^{-}},\]if present, are decomposed by conc. \[HN{{O}_{3}}\]and hence do not interfere in the test.
  done clear
  View Answer play_arrow

• question_answer25) Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Nitrogen dioxide  
  done clear
  B)
  Sulphur dioxide
  done clear
  C)
  Tetrachloroethylene
  done clear
  D)
  Carbon dioxide
  done clear
  View Answer play_arrow

• question_answer26) Consider the reaction sequence below :   JEE Main Online Paper (Held On 10 April 2016)
  A)
                                                         
  done clear
  B)
  
  done clear
  C)
                    
  done clear
  D)
  
  done clear
  View Answer play_arrow

• question_answer27) Observation of "Rhumann's purple" is a confirmatory test for the presence of :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Reducing sugar
  done clear
  B)
  Starch
  done clear
  C)
  Protein
  done clear
  D)
  Cupric ion
  done clear
  View Answer play_arrow

• question_answer28) Aqueous solution of which salt will not contain ions with the electronic configuration \[1{{s}^{2}}2{{s}^{2}}{{p}^{6}}3{{s}^{2}}3{{p}^{6}}\] ?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  \[NaCl\]                              
  done clear
  B)
  \[Ca{{I}_{2}}\]
  done clear
  C)
  \[NaF\]
  done clear
  D)
  \[KBr\]
  done clear
  View Answer play_arrow

• question_answer29) The volume of 0.1 N dibasic acid sufficient to neutralize 1 g of a base that furnishes 0.04 mole of \[O{{H}^{-}}\] in aqueous solution is :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  400 mL                 
  done clear
  B)
  600 mL
  done clear
  C)
  200 mL
  done clear
  D)
  80 mL
  done clear
  View Answer play_arrow

• question_answer30) Identify the reaction which does not liberate hydrogen :   JEE Main Online Paper (Held On 10 April 2016)
  A)
  Allowing a solution of sodium in liquid ammonia to stand.
  done clear
  B)
  Reaction of zinc with aqueous alkali.
  done clear
  C)
  Reaction of lithium hydride with \[{{B}_{2}}{{H}_{6}}.\]
  done clear
  D)
  Electrolysis of acidified water using Pt electrodes.
  done clear
  View Answer play_arrow