JEE Main 2013 Questions: Quiz! Exam

90 Questions | Total Attempts: 1471

SettingsSettingsSettings
JEE Main 2013 Questions: Quiz! Exam


Questions and Answers
  • 1. 
    Unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism?
    • A. 

      Tertiary alcohol by SN1

    • B. 

      Secondary alcohol by SN2

    • C. 

      Tertiary alcohol by SN2

    • D. 

      Secondary alcohol by SN1

  • 2. 
    The first ionization potential of Na is 5.1 eV. The value of electron gain enthalpy of Na+ will be:
    • A. 

      – 5.1 eV

    • B. 

      –10.2 eV

    • C. 

      + 2.55 eV

    • D. 

      – 2.55 eV

  • 3. 
    Stability of the species Li2,  Li2- and  Li2+ increases in the order of:
    • A. 

      Li2- 

    • B. 

      Li2   

    • C. 

      Li2-   

    • D. 

      Li2    

  • 4. 
    The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M)HCl will be:
    • A. 

      1.00 M

    • B. 

      1. 75 M

    • C. 

      0.975 M

    • D. 

      0.875 M

  • 5. 
    Which of the following is the wrong statement?
    • A. 

      O3 molecule is bent

    • B. 

      Ozone is violet-black in solid state

    • C. 

      Ozone is diamagnetic gas

    • D. 

      ONCl and ONO- are is electronic

  • 6. 
    Four successive members of the first-row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest E0M3+/M2+ Value?
    • A. 

      Mn(Z = 25)

    • B. 

      Fe(Z = 26)

    • C. 

      Co(Z = 27)

    • D. 

      Cr(Z = 24)

  • 7. 
    A solution of (–) –1 – chloro –1 – phenylethane is toluene racemizes slowly in the presence of a small amount of SbCl5, due to the formation of:
    • A. 

      Carbene

    • B. 

      Carbocation

    • C. 

      Free radical

    • D. 

      Carbanion

  • 8. 
    The coagulating power of electrolytes having ions Na+, Al3+ and Ba2+ for arsenic sulphide sol increases in the order:
    • A. 

      Na<   Ba2+  <   Al3+

    • B. 

      Ba2+  <  Na+  <  Al3+

    • C. 

      Al3+ <   Na+   <  Ba2+

    • D. 

      Al3+   <  Ba2+    <   Na+

  • 9. 
    How many liters of water must be added to 1 liter of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with a pH of 2?
    • A. 

      0.9 L

    • B. 

      2.0 L

    • C. 

      9.0 L

    • D. 

      0.1 L

  • 10. 
    Which one of the following molecules is expected to exhibit diamagnetic behavior?
    • A. 

      N2

    • B. 

      O2

    • C. 

      S2

    • D. 

      C2

  • 11. 
    Which of the following arrangements does not represent the correct order of the property stated against it?
    • A. 

      Ni2+ < Co2+ < Fe2+ < Mn2+ : ionic size

    • B. 

      Co3+ < Fe3+ < Cr3+ < Sc3+ : stability in aqueous solution

    • C. 

      Sc < Ti < Cr < Mn : number of oxidation states

    • D. 

      V2+ < Cr2+ < Mn2+ < Fe2+ : paramagnetic behaviour

  • 12. 
    Experimentally it was found that a metal oxide has the formula M0.98O. Metal M is present as Mn2+ and Mn3+ in its oxide. The fraction of the metal which exists as M3+ would be:
    • A. 

      4.08%

    • B. 

      6.05%

    • C. 

      5.08%

    • D. 

      7.01%

  • 13. 
    A compound with molecular mass 180 is acylated with CH3COCl to get a compound with molecular mass 390. The number of amino groups presents per molecule of the former compound is:
    • A. 

      5

    • B. 

      4

    • C. 

      6

    • D. 

      2

  • 14. 
    Given Based on the data given above, strongest oxidising agent will be:
    • A. 

      Cr3+

    • B. 

      Mn2+

    • C. 

      MnO-4

    • D. 

      Cl-

  • 15. 
    Arrange the following compounds in order of decreasing acidity:
    • A. 

      I > II > III > IV

    • B. 

      III > I > II > IV

    • C. 

      IV > III > I > II

    • D. 

      II > IV > I > III

  • 16. 
    The rate of a reaction doubles when its temperature changes from 300K to 310K. The activation energy of such a reaction will be: (R = 8.314 JK–1 mol–1 and log 2 = 0.301)
    • A. 

      48.6 kJ mol–1

    • B. 

      58.5 kJ mol–1

    • C. 

      60.5 kJ mol–1

    • D. 

      53.6 kJ mol–1

  • 17. 
    Synthesis of each molecule of glucose in photosynthesis involves:
    • A. 

      10 molecules of ATP

    • B. 

      8 molecules of ATP

    • C. 

      6 molecules of ATP

    • D. 

      18 molecules of ATP

  • 18. 
    Which of the following complex species is not expected to exhibit optical isomerism?
    • A. 
    • B. 
    • C. 
    • D. 
  • 19. 
    A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.00C. As it does so, it absorbs 208J of heat. The values of q and w for the process will be: (R = 8.314 J/mol K) (ln 7.5 = 2.01)
    • A. 

      Q = – 208 J, w = – 208 J

    • B. 

      Q = – 208 J, w = + 208 J

    • C. 

      Q = + 208 J, w = + 208 J

    • D. 

      Q = + 208 J, w = – 208 J

  • 20. 
    A gaseous hydrocarbon gives upon combustion 0.72 g of water and 3.08 g of CO2. The empirical formula of the hydrocarbon is:
    • A. 

      C3H4

    • B. 

      C6H5

    • C. 

      C7H8

    • D. 

      C2H4

  • 21. 
    The order of stability of the following carbocations: is:
    • A. 

      II > III > I

    • B. 

      I > II > III

    • C. 

      III > I > II

    • D. 

      III > II > I

  • 22. 
    Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se, and Ar?
    • A. 

      S < Se < Ca < Ba < Ar

    • B. 

      Ba < Ca < Se < S < Ar

    • C. 

      Ca < Ba < S < Se < Ar

    • D. 

      Ca < S < Ba < Se < Ar

  • 23. 
    For gaseous state, if most probable speed is denoated by C*, average speed by and mean square speed by C, then for a large number of molecules the ratios of these speeds are:
    • A. 
    • B. 
    • C. 
    • D. 
  • 24. 
    The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was:
    • A. 

      Methylamine

    • B. 

      Ammonia

    • C. 

      Phosgene

    • D. 

      Methylisocyanate

  • 25. 
    Consider the following reaction: The values of x, y and z in the reaction are, respectively:
    • A. 

      2, 5 and 8

    • B. 

      2, 5 and 16

    • C. 

      5, 2 and 8

    • D. 

      5, 2 and 16

Back to Top Back to top