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question_answer1) Which one of the following properties is not shown by NO?
JEE Main Solved Paper-2014
A)
It combines with oxygen to form nitrogen dioxide
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B)
It is bond order is 2.5
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C)
It is diamagnetic in gaseous state
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D)
It is a neutral oxide
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question_answer2) If Z is a compressibility factor, van der Waals equation at low pressure can be written as :
JEE Main Solved Paper-2014
A)
\[Z=1-\frac{Pb}{RT}\]
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B)
\[Z=1+\frac{Pb}{RT}\]
done
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C)
\[Z=1+\frac{RT}{Pb}\]
done
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D)
\[Z=1-\frac{a}{VRT}\]
done
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question_answer3) 63. The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is :
JEE Main Solved Paper-2014
A)
Cu
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B)
Cr
done
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C)
Ag
done
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D)
Ca
done
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question_answer4) Resistance of 0.2 M solution of an electrolyte is \[50\Omega .\]The specific conductance of the solution is\[\text{S}{{\text{m}}^{\text{-1}}}\]. The resistance of 0.5 M solution of the same electrolyte is \[280\Omega .\]The molarconductivity of 0.5 M solution of the electrolyte in \[\text{S}\,{{\text{m}}^{\text{2}}}\,\text{mo}{{\text{l}}^{-1}}\] is :
JEE Main Solved Paper-2014
A)
\[5\times {{10}^{3}}\]
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B)
\[5\times {{10}^{2}}\]
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C)
\[5\times {{10}^{-4}}\]
done
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D)
\[5\times {{10}^{-3}}\]
done
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question_answer5) CsCl crystallises in body centred cubic lattice. If ?a? is its edge length then which of thefollowing expressions is correct ?
JEE Main Solved Paper-2014
A)
\[{{r}_{Cs}}+{{r}_{Cl-}}=\frac{\sqrt{3}}{2}a\]
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B)
\[{{r}_{Cs}}{{+}_{C{{l}^{-}}}}=\sqrt{3}a\]
done
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C)
\[{{r}_{Cs}}_{+}{{+}_{C{{l}^{-}}}}=3a\]
done
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D)
\[{{r}_{Cs}}_{+}+{{r}_{C{{l}^{-}}}}=\frac{3a}{2}\]
done
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question_answer6) Consider separate solutions of \[0.500M{{C}_{2}}{{H}_{5}}OH(aq),\] \[0.100M\,M{{g}_{3}}{{(P{{O}_{4}})}_{2}}(aq),0.250\,MKBr(aq)\]and \[0.125MN{{a}_{3}}P{{O}_{4}}(aq)\]at \[25{}^\circ C\]. Which statement is true about these solutions, assuming allsalts to be strong electrolytes ?
JEE Main Solved Paper-2014
A)
\[0.125MN{{a}_{3}}P{{O}_{4}}(aq)\]has the highest osmotic pressure.
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B)
\[0.500M{{C}_{2}}{{H}_{5}}OH(aq)\]has the highest osmotic pressure.
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C)
They all have the same osmotic pressure.
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D)
\[0.100MM{{g}_{3}}{{(P{{O}_{4}})}_{2}}(aq)\]has the highest osmotic pressure.
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question_answer7)
In which of the following reactions \[{{H}_{2}}{{O}_{2}}\]acts as a reducing agent ?
(A)\[{{H}_{2}}{{O}_{2}}+2{{H}^{+}}+2{{e}^{-}}\to 2{{H}_{2}}O\]
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(B)\[{{H}_{2}}{{O}_{2}}-2{{e}^{-}}\to {{O}_{2}}+2{{H}^{+}}\]
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(C)\[{{H}_{2}}{{O}_{2}}+2{{e}^{-}}\to 2O{{H}^{-}}\]
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(D)\[{{H}_{2}}{{O}_{2}}+2O{{H}^{-}}-2{{e}^{-}}\to {{O}_{2}}+2{{H}_{2}}O\]
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JEE Main Solved Paper-2014
A)
\[(a), (c)\]
done
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B)
\[(b), (d)\]
done
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C)
\[(a), (b)\]
done
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D)
\[(c), (d)\]
done
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question_answer8) In \[{{S}_{N}}2\]reactions, the correct order of reactivity for the following compounds : \[C{{H}_{3}}Cl,C{{H}_{3}}C{{H}_{2}}Cl,{{(C{{H}_{3}})}_{2}}CHCl\]and\[{{(C{{H}_{3}})}_{3}}CCl\]is:
JEE Main Solved Paper-2014
A)
\[C{{H}_{3}}C{{H}_{2}}Cl>C{{H}_{3}}Cl>{{(C{{H}_{3}})}_{2}}CHCl>{{(C{{H}_{3}})}_{3}}CCl\]
done
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B)
\[{{(C{{H}_{3}})}_{2}}CHCl>C{{H}_{3}}C{{H}_{2}}Cl>C{{H}_{3}}Cl>{{(C{{H}_{3}})}_{3}}CCl\]
done
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C)
\[C{{H}_{3}}Cl>{{(C{{H}_{3}})}_{2}}CHCl>C{{H}_{2}}C{{H}_{2}}Cl>{{(C{{H}_{3}})}_{3}}CCl\]
done
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D)
\[C{{H}_{3}}Cl>C{{H}_{3}}C{{H}_{2}}Cl>{{(C{{H}_{3}})}_{2}}CHCl>{{(C{{H}_{3}})}_{3}}CCl\]
done
clear
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question_answer9) The octahedral complex of a metal ion \[{{M}^{3+}}\] with four monodentate ligands \[{{L}_{1}},{{L}_{2}},{{L}_{3}}\]and \[{{L}_{4}}\]absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasingorder of ligand strength of the four ligands is :
JEE Main Solved Paper-2014
A)
\[{{L}_{3}}<{{L}_{2}}<{{L}_{4}}<{{L}_{1}}\]
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B)
\[{{L}_{1}}<{{L}_{2}}<{{L}_{4}}<{{L}_{3}}\]
done
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C)
\[{{L}_{4}}<{{L}_{3}}<{{L}_{2}}<{{L}_{1}}\]
done
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D)
\[{{L}_{1}}<{{L}_{3}}<{{L}_{2}}<{{L}_{4}}\]
done
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question_answer10) For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl methodand the evolved ammonia was absorbed in 60 mL of\[\frac{M}{10}\]sulphuric acid. The unreacted acid required 20 mL of \[\frac{M}{10}\]sodium hydroxide for complete neutralization. The percentage of nitrogenin the compound is :
JEE Main Solved Paper-2014
A)
3 %
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B)
5 %
done
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C)
6 %
done
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D)
10 %
done
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question_answer11) The equivalent conductance of NaCl at concentration C and at infinite dilution are \[{{\lambda }_{C}}\] and \[{{\lambda }_{\infty }}\]respectively. The correct relationship between \[{{\lambda }_{C}}\] and \[{{\lambda }_{\infty }}\]is given as : (where the constant B is positive)
JEE Main Solved Paper-2014
A)
\[{{\lambda }_{C}}={{\lambda }_{\infty }}-(B)\sqrt{C}\]
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B)
\[{{\lambda }_{C}}={{\lambda }_{\infty }}+(B)\sqrt{C}\]
done
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C)
\[{{\lambda }_{C}}={{\lambda }_{\infty }}+(B)C\]
done
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D)
\[{{\lambda }_{C}}={{\lambda }_{\infty }}-(B)C\]
done
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question_answer12) For the reaction \[S{{O}_{2}}_{(g)}+\frac{1}{2}{{O}_{2(g)}}S{{O}_{3(g)}}\]if \[{{K}_{P}}={{K}_{C}}{{(RT)}^{x}}\] where the symbols have usual meaning then the value of x is : (assuming ideality)
JEE Main Solved Paper-2014
A)
\[\frac{1}{2}\]
done
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B)
1
done
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C)
-1
done
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D)
\[-\frac{1}{2}\]
done
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question_answer13) In the reaction, \[C{{H}_{3}}COOH\xrightarrow[{}]{LiAl{{H}_{4}}}A\xrightarrow[{}]{PC{{l}_{5}}}B\xrightarrow[{}]{Alc.KOH}C,\]the product C is :
JEE Main Solved Paper-2014
A)
Ethylene
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B)
Acetyl chloride
done
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C)
Acetaldehyde
done
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D)
Acetylene
done
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question_answer14)
Sodium phenoxide when heated with \[C{{O}_{2}}\]under pressure at \[125{}^\circ C\] yields a product which on acetylation produces C. The major product C would be :
JEE Main Solved Paper-2014
A)
done
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B)
done
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C)
done
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D)
done
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question_answer15) On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, theorganic compound formed is :
JEE Main Solved Paper-2014
A)
an alkyl cyanide
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B)
an alkyl isocyanide
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C)
analkanol
done
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D)
analkanediol
done
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question_answer16) The correct statement for the molecule, \[Cs{{I}_{3}},\]is :
JEE Main Solved Paper-2014
A)
it contains \[C{{s}^{3+}}\]and \[{{I}^{-}}\] ions.
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B)
it contains \[C{{s}^{+}},{{I}^{-}}\]and lattice \[{{I}_{2}}\] molecule.
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C)
it is a covalent molecule.
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D)
it contains \[C{{s}^{+}}\]and \[I_{3}^{-}\]ions.
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question_answer17) The equation which is balanced and represents the correct product(s) is :
JEE Main Solved Paper-2014
A)
\[{{[Mg{{({{H}_{2}}O)}_{6}}]}^{2+}}+{{(EDTA)}^{4-}}\xrightarrow[{}]{excessNaOH}{{[Mg(EDTA)]}^{2}}+6{{H}_{2}}O\]
done
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B)
\[CuS{{O}_{4}}+4KCN\to {{K}_{2}}[Cu{{(CN)}_{4}}]+{{K}_{2}}S{{O}_{4}}\]
done
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C)
\[L{{i}_{2}}+2KCl\to 2LiCl+{{K}_{2}}O\]
done
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D)
\[[CoCl{{(N{{H}_{3}})}_{5}}]++5{{H}^{+}}\to C{{o}^{2+}}+5NH_{4}^{+}+C{{l}^{-}}\]
done
clear
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question_answer18)
For which of the following molecule significant \[\mu \ne 0?\]
JEE Main Solved Paper-2014
A)
\[Only (iii)\]
done
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B)
\[(iii) and (iv)\]
done
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C)
\[Only (i)\]
done
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D)
\[(i) and (ii)\]
done
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question_answer19)
For the non-stoichiometrereaction \[2A+B\to C+D,\]the following kinetic data were obtained inthree separate experiments, all at 298 K.
Initial concentration (A) |
Initial Concentration (B) |
Initial rate of formation of C \[(mol\,{{L}^{-}}{{S}^{-}})\] |
\[0.1M\] |
\[0.1M\] |
\[1.2\times {{10}^{-3}}\] |
\[0.1M\] |
\[0.2M\] |
\[1.2\times {{10}^{-3}}\] |
\[0.2M\] |
\[0.1M\] |
\[2.4\times {{10}^{-3}}\] |
The rate law for the formation of C is :
JEE Main Solved Paper-2014
A)
\[\frac{dc}{dt}=k[A]{{[B]}^{2}}\]
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B)
\[\frac{dc}{dt}=k[A]\]
done
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C)
\[\frac{dc}{dt}=k[A][B]\]
done
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D)
\[\frac{dc}{dt}=k{{[A]}^{2}}[B]\]
done
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question_answer20) Which series of reactions correctly represents chemical relations related to iron and itscompound?
JEE Main Solved Paper-2014
A)
\[Fe\xrightarrow[{}]{C{{l}_{2}}.heat}FeC{{l}_{3}}\xrightarrow[{}]{heat,air}FeC{{l}_{2}}\xrightarrow[{}]{Zn}Fe\]
done
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B)
\[Fe\xrightarrow[{}]{{{O}_{2}},heat}F{{e}_{3}}{{O}_{4}}\xrightarrow[{}]{CO,{{600}^{o}}C}FeO\xrightarrow[{}]{CO,{{700}^{o}}C}Fe\]
done
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C)
\[Fe\xrightarrow[{}]{dil\,{{H}_{2}}S{{O}_{4}}}FeS{{O}_{4}}\xrightarrow[{}]{{{H}_{2}}S{{O}_{4}},{{O}_{2}}}F{{e}_{2}}{{(S{{O}_{4}})}_{3}}\xrightarrow[{}]{heat}Fe\]
done
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D)
\[Fe\xrightarrow[{}]{{{O}_{2}},heat}FeO\xrightarrow[{}]{dil\,{{H}_{2}}S{{O}_{4}}}FeS{{O}_{4}}\xrightarrow[{}]{heat}Fe\]
done
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E)
done
clear
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question_answer21) Considering the basic strength of amines in aqueous solution, which one has the smallest \[\text{p}{{\text{K}}_{\text{b}}}\]value?
JEE Main Solved Paper-2014
A)
\[{{(C{{H}_{3}})}_{3}}N\]
done
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B)
\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]
done
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C)
\[{{(C{{H}_{3}})}_{2}}NH\]
done
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D)
\[C{{H}_{3}}N{{H}_{2}}\]
done
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question_answer22) Which one of the following bases is not present in DNA?
JEE Main Solved Paper-2014
A)
Cytosine
done
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B)
Thymine
done
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C)
Quinoline
done
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D)
Adenine
done
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question_answer23) The correct set of four quantum numbers for the valence electrons of rubidium atom (Z = 37) is :
JEE Main Solved Paper-2014
A)
\[5,1,1,+\frac{1}{2}\]
done
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B)
\[5,0,1,+\frac{1}{2}\]
done
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C)
\[5,0,0,+\frac{1}{2}\]
done
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D)
\[5,1,0,+\frac{1}{2}\]
done
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question_answer24) The major organic compound formed by the reaction of 1, 1, 1 − trichloroethane with silver powder is :
JEE Main Solved Paper-2014
A)
2 - Butyne
done
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B)
2 - Butene
done
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C)
Acetylene
done
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D)
Ethene
done
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question_answer25) Given below are the half − cell reaction : \[M{{n}^{2+}}+2{{e}^{-}}\to Mn;{{E}^{o}}=-1.18V\] \[2(M{{n}^{3+}}+{{e}^{-}}\to M{{n}^{2+}});{{E}^{o}}=+1.51V.\] The \[E{}^\circ \]for \[3M{{n}^{2+}}\to Mn+2M{{n}^{3+}}\]will be
JEE Main Solved Paper-2014
A)
0.33 V ; the reaction will not occur
done
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B)
−0.33 V ; the reaction will occur
done
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C)
−2.69 V ; the reaction will not occur
done
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question_answer26) The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio ofnumber of their molecule is :
JEE Main Solved Paper-2014
A)
1 : 8
done
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B)
3 : 16
done
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C)
1 : 4
done
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D)
7 : 32
done
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question_answer27) Which one is classified as a condensation polymer?
JEE Main Solved Paper-2014
A)
Teflon
done
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B)
Acrylonitrile
done
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C)
Dacron
done
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D)
Neoprene
done
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question_answer28) Among the following oxoacids, the correct decreasing order of acid strength is :
JEE Main Solved Paper-2014
A)
\[HCl{{O}_{4}}>HCl{{O}_{3}}>HCl{{O}_{2}}>HOCl\]
done
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B)
\[HCl{{O}_{2}}>HCl{{O}_{4}}>HCl{{O}_{3}}>HOCl\]
done
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C)
\[HOCl>HCl{{O}_{2}}>HCl{{O}_{3}}>HCl{{O}_{4}}\]
done
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D)
\[HCl{{O}_{4}}>HOCl>HCl{{O}_{2}}>HCl{{O}_{3}}\]
done
clear
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question_answer29) For complete combustion of ethanol, \[{{C}_{2}}{{H}_{5}}OH(\ell )+3{{O}_{2}}(g)\to 2C{{O}_{2}}(g)+3{{H}_{2}}O(\ell ),\]the amount ofheat produced as measured in bomb calorimeter, is \[1364.47\,\text{kJ}\,\text{mo}{{\text{l}}^{-1}}\] at \[25{}^\circ C\]. Assuming ideality theEnthalpy of combustion, \[\Delta \text{cH,}\] for the reaction will be : \[(\text{R = 8}\text{.314 kJ mo}{{\text{l}}^{\text{-1}}})\]
JEE Main Solved Paper-2014
A)
\[\text{-1460}\text{.50 kJ mo}{{\text{l}}^{\text{-1}}}\]
done
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B)
\[\text{-1350}\text{.50 kJ mo}{{\text{l}}^{\text{-1}}}\]
done
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C)
\[\text{-1366}\text{.95 kJ mo}{{\text{l}}^{\text{-1}}}\]
done
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D)
\[\text{-1361}\text{.95 kJ mo}{{\text{l}}^{\text{-1}}}\]
done
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question_answer30) The most suitable reagent for the conversion of \[R-C{{H}_{2}}-OH\to R-CHO\] is :
JEE Main Solved Paper-2014
A)
\[Cr{{O}_{3}}\]
done
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B)
PCC (PyridiniumChlorochromate)
done
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C)
\[KMn{{O}_{4}}\]
done
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D)
\[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]
done
clear
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