-
question_answer1) Which of the following polymer is a polyamide?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Terylene
done
clear
B)
Nylon
done
clear
C)
Rubber
done
clear
D)
vulcanized rubber
done
clear
View Answer play_arrow
-
question_answer2) The magnetic moment of the complex anion \[{{[\operatorname{Cr}(\operatorname{NO})(\operatorname{N}{{\operatorname{H}}_{3}})(\operatorname{C}{{\operatorname{N}}_{4}})]}^{2-}}\]is:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
5.91 BM
done
clear
B)
3.87 BM
done
clear
C)
1.73 BM
done
clear
D)
2.82 BM
done
clear
View Answer play_arrow
-
question_answer3) Glycosidic linkage is actually an:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Carbonyl bond
done
clear
B)
Ether bond
done
clear
C)
Ester bond
done
clear
D)
Amide bond
done
clear
View Answer play_arrow
-
question_answer4) Equimolar solution of the following compounds are prepared separately in water. Which will have the lowest pH value?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\operatorname{Be}{{\operatorname{CI}}_{2}}\]
done
clear
B)
\[\operatorname{Sr}{{\operatorname{CI}}_{2}}\]
done
clear
C)
\[\operatorname{Ca}{{\operatorname{CI}}_{2}}\]
done
clear
D)
\[{{\operatorname{M}}_{g}}{{\operatorname{CI}}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer5) The numbers of protons, electrons and neutrons in molecule of heavy water are respectively:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
8,10,11
done
clear
B)
10,10,10
done
clear
C)
10,11,10
done
clear
D)
11,10,10
done
clear
View Answer play_arrow
-
question_answer6) Number of atoms in the following samples of substances is the largest in:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
4.0 g of hydrogen
done
clear
B)
71.0g chlorine
done
clear
C)
127.0 g of iodine
done
clear
D)
48.0g magnesium
done
clear
View Answer play_arrow
-
question_answer7) Which has bipyramidal shape?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\operatorname{X}{{\operatorname{eOF}}_{4}}\]
done
clear
B)
\[\operatorname{X}{{\operatorname{eO}}_{3}}\]
done
clear
C)
\[\operatorname{X}{{\operatorname{eO}}_{3}}{{\operatorname{F}}_{2}}\]
done
clear
D)
\[\operatorname{X}\operatorname{eO}{{\operatorname{F}}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer8) Which is the correct order of second ionization potential of C,N, O and F in the following ?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\operatorname{O}>\operatorname{N}>\operatorname{F}>C\]
done
clear
B)
\[O>\operatorname{F}>\operatorname{N}>C\]
done
clear
C)
\[\operatorname{F}>\operatorname{O}>\operatorname{N}>C\]
done
clear
D)
\[\operatorname{C}>\operatorname{N}>\operatorname{O}>\operatorname{F}\]
done
clear
View Answer play_arrow
-
question_answer9) Natural glucose is termed D-glucose because:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[-OH\]on the second carbon is on the right side in Fischer projection
done
clear
B)
\[-OH\]n the sixth carbon is on the right side in Fischer projection
done
clear
C)
\[-OH\]on the fifth carbon is on the right side in Fischer projection
done
clear
D)
It is dextrorotatory
done
clear
View Answer play_arrow
-
question_answer10) The shape of \[\operatorname{IF}_{6}^{-}\]is :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Trgonally distorted octahedron
done
clear
B)
pyramidal
done
clear
C)
Octahedral
done
clear
D)
Square antiprism
done
clear
View Answer play_arrow
-
question_answer11) \[{{\operatorname{N}}_{2}}(g)+3{{\operatorname{H}}_{2}}(g)\rightleftharpoons 2{{\operatorname{NH}}_{3}}(g),{{\operatorname{K}}_{1}}\] [A] \[{{\operatorname{N}}_{2}}(g)+{{O}_{2}}(g)\rightleftharpoons 2NO(g),{{\operatorname{K}}_{2}}\] [B] \[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\rightleftharpoons {{H}_{2}}O(g),{{\operatorname{K}}_{3}}\] [C] The equation for the equilibrium constant of the reaction \[2{{\operatorname{NH}}_{3}}(g)+\frac{5}{2}{{O}_{2}}(g)\rightleftharpoons \]\[2\operatorname{NH}O(g)+3{{\operatorname{H}}_{3}}\operatorname{O}(g),({{K}_{4}})\] in terms of \[{{K}_{1}},{{K}_{2}},\] and \[{{K}_{3}}\]is :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\frac{{{\operatorname{K}}_{1}}{{\operatorname{K}}_{2}}}{{{\operatorname{K}}_{3}}}\]
done
clear
B)
\[\frac{{{\operatorname{K}}_{1}}\operatorname{K}_{3}^{2}}{{{\operatorname{K}}_{2}}}\]
done
clear
C)
\[{{\operatorname{K}}_{1}}{{\operatorname{K}}_{2}}{{\operatorname{K}}_{3}}\]
done
clear
D)
\[\frac{{{\operatorname{K}}_{2}}\operatorname{K}_{3}^{3}}{{{\operatorname{K}}_{1}}}\]
done
clear
View Answer play_arrow
-
question_answer12) \[{{\operatorname{H}}_{1}}-\]Receptor antagonists is a term associated with:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Antisptics
done
clear
B)
Anti his tam ins
done
clear
C)
Antacids
done
clear
D)
Analgesics
done
clear
View Answer play_arrow
-
question_answer13) The correct order of viscosity of the following liquids will be:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Water < methyl alcohol < dimethyl ether < glycerol
done
clear
B)
methyl alcohol < glycerol < water < dimethyl ether
done
clear
C)
dimethyl ether < methyl alcohol < water < glycerol
done
clear
D)
glycerol< dimethyl ether < water < methyl alcohol
done
clear
View Answer play_arrow
-
question_answer14) What is the \[\operatorname{p}\operatorname{H}\] of a\[{{10}^{-4}}\] M \[{{\operatorname{OH}}^{-}}\] solution at \[330\operatorname{K},\] if \[{{\operatorname{K}}_{w}}\]at 330K is \[{{10}^{-13.6}}?\]
JEE Main Online Paper ( Held On 23 April 2013 )
A)
4
done
clear
B)
9.0
done
clear
C)
10
done
clear
D)
9.6
done
clear
View Answer play_arrow
-
question_answer15) The order of reactivity of the given haloalkanes towards nuclephlile is:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[R\,I<R\,Br<R\,Cl\]
done
clear
B)
\[R\,\,Cl>R\,\,Br>R\,\,I\]
done
clear
C)
\[R\,\,Br>R\,\,Cl>R\,\,I\]
done
clear
D)
\[R\,\,Br>R\,\,I\,\,>\,R\,\,Cl\]
done
clear
View Answer play_arrow
-
question_answer16) Identify the incorrect statement:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
In\[{{(\operatorname{S}{{\operatorname{i}}_{3}}{{\operatorname{O}}_{9}})}^{6-}}\], tetrahedral \[Si{{O}_{4}}\] units share two oxygen atoms.
done
clear
B)
Trialkylchlorosilaneon hydrolysis gives \[{{R}_{3}}SiOH\]
done
clear
C)
\[SiC{{l}_{4}}\]undergoes hydrolysis to give \[{{H}_{4}}Si{{O}_{4}}\]
done
clear
D)
\[{{(\operatorname{S}{{\operatorname{i}}_{3}}{{\operatorname{O}}_{9}})}^{6-}}\]has cyclic structure
done
clear
View Answer play_arrow
-
question_answer17) When a small amount of \[\operatorname{K}\operatorname{M}\operatorname{n}{{\operatorname{O}}_{4}}\]is added to concentrated\[{{\operatorname{H}}_{2}}\operatorname{S}{{\operatorname{O}}_{4}},\] a green oily compound is obtained which is highly explosive in nature. Compound may be:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\operatorname{M}\operatorname{n}\operatorname{S}{{\operatorname{O}}_{4}}\]
done
clear
B)
\[\operatorname{M}{{\operatorname{n}}_{2}}{{\operatorname{O}}_{7}}\]
done
clear
C)
\[\operatorname{M}\operatorname{n}{{\operatorname{O}}_{2}}\]
done
clear
D)
\[\operatorname{M}{{\operatorname{n}}_{2}}{{\operatorname{O}}_{3}}\]
done
clear
View Answer play_arrow
-
question_answer18) The reaction of phenol with benzoyl benzoateis known as :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Claisen reaction
done
clear
B)
Schotten-Baumann reaction
done
clear
C)
Reimer - Tiemeann reaction
done
clear
D)
Gatterman- Koch reaction
done
clear
View Answer play_arrow
-
question_answer19) Identify incorrect statement:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[C{{u}_{2}}O\] is colourless
done
clear
B)
Cupper (I) compounds
done
clear
C)
Copper (I) compounds are diamagnetic
done
clear
D)
\[{{\operatorname{Cu}}_{2}}\operatorname{S}\] is black
done
clear
View Answer play_arrow
-
question_answer20) Vapour pressure of pure benzene is 119 torr and that of toluene is 37.0 torr at the same temperature. Mole fraction of toluene in vapour phase which is equilibrium with a solution of benzene and toluene having a mole fraction of toluene 0.50 will be:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
0.137
done
clear
B)
0.237
done
clear
C)
0.435
done
clear
D)
0.205
done
clear
View Answer play_arrow
-
question_answer21) In a face centred cubic lattice, atoms of A form the corner points and atoms of B form the face points. If two atoms of A are missing form the corner points, the formula of the ionic compound is:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[{{\operatorname{AB}}_{3}}\]
done
clear
B)
\[{{\operatorname{AB}}_{4}}\]
done
clear
C)
\[{{\operatorname{A}}_{2}}{{B}_{5}}\]
done
clear
D)
\[{{\operatorname{AB}}_{2}}\]
done
clear
View Answer play_arrow
-
question_answer22) The de Broglie wavelength of a car of mass 100 kg and velocity 36 km/hr is: \[(h=6.63\times {{10}^{-34}}\,Js)\]
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[6.626\times {{10}^{-34}}\operatorname{m}\]
done
clear
B)
\[6.626\times {{10}^{-38}}\operatorname{m}\]
done
clear
C)
\[6.626\times {{10}^{-31}}\operatorname{m}\]
done
clear
D)
\[6.626\times {{10}^{-30}}\operatorname{m}\]
done
clear
View Answer play_arrow
-
question_answer23) Given: \[E_{1/2/C{{l}_{2}}/c{{l}^{-}}}^{0}=1.36\,V,\,E_{C{{r}^{3+}}/Cr}^{0}=-0.74\,V\], \[E_{C{{r}_{2}}O_{7}^{2-}/C{{r}^{3+}}}^{0}=1.33\,V,\,E_{MnO_{4}^{-}/MnO_{{}}^{2+}}^{0}=1.51\,V\] The correct order of reducing power of the species \[(Cr,C{{r}^{3+}},M{{n}^{2+}}\text{and}\,\,C{{l}^{-}})\]be:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[M{{n}^{2+}}<C{{l}^{-}}<C{{r}^{3+}}<Cr\]
done
clear
B)
\[M{{n}^{2+}}<C{{r}^{3}}^{-}<C{{l}^{-}}<Cr\]
done
clear
C)
\[C{{r}^{3+}}<C{{l}^{-}}<M{{n}^{2+}}<Cr\]
done
clear
D)
\[C{{r}^{3+}}<C{{l}^{-}}<Cr<M{{n}^{2}}^{+}\]
done
clear
View Answer play_arrow
-
question_answer24) Smoke is an example of:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Solid disperse in solid
done
clear
B)
Gas dispersed in liquid
done
clear
C)
Solid dispersed in gas Smoke is an example of solid particles dispersed in gas.
done
clear
D)
Gas dispersed in solid
done
clear
View Answer play_arrow
-
question_answer25) Which of the following statements/ relationships is not correct in thermodynamic changes?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\Delta U=0\](isothermal reversible expansion of a gas)
done
clear
B)
\[w=-nRT\ln \frac{{{V}_{2}}}{{{V}_{1}}}\](isothermal reversible expansion of an ideal gas)
done
clear
C)
\[w=-nRT\ln \frac{{{V}_{2}}}{{{V}_{1}}}\](isothermal reversible expansion of an ideal gas)
done
clear
D)
For a system of constant volume heat involved directly changes to internal energy.
done
clear
View Answer play_arrow
-
question_answer26) Bond distance in HF is \[9.17\times {{10}^{-11}}\operatorname{m}.\] Dipole moment of HF is \[6.104\times {{10}^{-30}}\operatorname{Cm}.\] The percent ionic character in HF will be (electron charge = \[6.104\times {{10}^{-19}}\operatorname{C}\])
JEE Main Online Paper ( Held On 23 April 2013 )
A)
61.0 %
done
clear
B)
38.0%
done
clear
C)
35.5 %
done
clear
D)
41.5 %
done
clear
View Answer play_arrow
-
question_answer27) The rate constant of a zero order reaction is \[2.0\times {{10}^{-2}}\]mol\[{{\operatorname{L}}^{-1}}\]\[{{\operatorname{s}}^{-1}}\]. If the concentration of the reactant after 25 seconds is 0.5 M. What is the initial concentration?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
0.5 M
done
clear
B)
1.25 M
done
clear
C)
12.5 M
done
clear
D)
1.0 M
done
clear
View Answer play_arrow
-
question_answer28) Which of the following is the product of aldol condensation?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
done
clear
B)
done
clear
C)
done
clear
D)
done
clear
View Answer play_arrow
-
question_answer29) The order of amines in gaseous state is :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[{{1}^{0}}>{{2}^{0}}>{{3}^{0}}>\operatorname{N}{{\operatorname{H}}_{3}}\]
done
clear
B)
\[{{3}^{0}}>{{2}^{0}}>\operatorname{N}{{\operatorname{H}}_{3}}>{{1}^{0}}\]
done
clear
C)
done
clear
D)
\[{{\operatorname{NH}}_{3}}>{{1}^{0}}>{{2}^{0}}>{{3}^{0}}\]
done
clear
View Answer play_arrow
-
question_answer30) Monocarboxylic acids are functional isomers of:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Ethers
done
clear
B)
Amines
done
clear
C)
Esters
done
clear
D)
Alcohols
done
clear
View Answer play_arrow
