JEE Main 2013 Questions: Quiz! Exam
(195).jpg "JEE Main 2013 Questions: Quiz! Exam")
- 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: - ProProfs]( "Given
Based on the data given above, strongest oxidising agent will be:")
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:
- ProProfs]( "Arrange the following compounds in order of decreasing acidity:")
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.
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- B.
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- C.
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- D.
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- 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: - ProProfs]( "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:")
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.
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- B.
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- C.
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- D.
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- 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: - ProProfs]( "Consider the following reaction:
The values of x, y and z in the reaction are, respectively:")
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
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