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question_answer1) Which of the following polymer is a polyamide?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Terylene
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B)
Nylon
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C)
Rubber
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D)
vulcanized rubber
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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
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B)
3.87 BM
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C)
1.73 BM
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D)
2.82 BM
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question_answer3) Glycosidic linkage is actually an:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Carbonyl bond
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B)
Ether bond
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C)
Ester bond
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D)
Amide bond
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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)
\[\operatorname{Be}{{\operatorname{CI}}_{2}}\]
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B)
\[\operatorname{Sr}{{\operatorname{CI}}_{2}}\]
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C)
\[\operatorname{Ca}{{\operatorname{CI}}_{2}}\]
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D)
\[{{\operatorname{M}}_{g}}{{\operatorname{CI}}_{2}}\]
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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
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B)
10,10,10
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C)
10,11,10
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D)
11,10,10
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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
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B)
71.0g chlorine
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C)
127.0 g of iodine
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D)
48.0g magnesium
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question_answer7) Which has bipyramidal shape?
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[\operatorname{X}{{\operatorname{eOF}}_{4}}\]
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B)
\[\operatorname{X}{{\operatorname{eO}}_{3}}\]
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C)
\[\operatorname{X}{{\operatorname{eO}}_{3}}{{\operatorname{F}}_{2}}\]
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D)
\[\operatorname{X}\operatorname{eO}{{\operatorname{F}}_{2}}\]
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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)
\[\operatorname{O}>\operatorname{N}>\operatorname{F}>C\]
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B)
\[O>\operatorname{F}>\operatorname{N}>C\]
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C)
\[\operatorname{F}>\operatorname{O}>\operatorname{N}>C\]
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D)
\[\operatorname{C}>\operatorname{N}>\operatorname{O}>\operatorname{F}\]
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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
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B)
\[-OH\]n the sixth carbon is on the right side in Fischer projection
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C)
\[-OH\]on the fifth carbon is on the right side in Fischer projection
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D)
It is dextrorotatory
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question_answer10) The shape of \[\operatorname{IF}_{6}^{-}\]is :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Trgonally distorted octahedron
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B)
pyramidal
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C)
Octahedral
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D)
Square antiprism
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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)
\[\frac{{{\operatorname{K}}_{1}}{{\operatorname{K}}_{2}}}{{{\operatorname{K}}_{3}}}\]
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B)
\[\frac{{{\operatorname{K}}_{1}}\operatorname{K}_{3}^{2}}{{{\operatorname{K}}_{2}}}\]
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C)
\[{{\operatorname{K}}_{1}}{{\operatorname{K}}_{2}}{{\operatorname{K}}_{3}}\]
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D)
\[\frac{{{\operatorname{K}}_{2}}\operatorname{K}_{3}^{3}}{{{\operatorname{K}}_{1}}}\]
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question_answer12) \[{{\operatorname{H}}_{1}}-\]Receptor antagonists is a term associated with:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Antisptics
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B)
Anti his tam ins
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C)
Antacids
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D)
Analgesics
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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
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B)
methyl alcohol < glycerol < water < dimethyl ether
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C)
dimethyl ether < methyl alcohol < water < glycerol
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D)
glycerol< dimethyl ether < water < methyl alcohol
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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
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B)
9.0
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C)
10
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D)
9.6
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question_answer15) The order of reactivity of the given haloalkanes towards nuclephlile is:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[R\,I<R\,Br<R\,Cl\]
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B)
\[R\,\,Cl>R\,\,Br>R\,\,I\]
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C)
\[R\,\,Br>R\,\,Cl>R\,\,I\]
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D)
\[R\,\,Br>R\,\,I\,\,>\,R\,\,Cl\]
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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.
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B)
Trialkylchlorosilaneon hydrolysis gives \[{{R}_{3}}SiOH\]
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C)
\[SiC{{l}_{4}}\]undergoes hydrolysis to give \[{{H}_{4}}Si{{O}_{4}}\]
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D)
\[{{(\operatorname{S}{{\operatorname{i}}_{3}}{{\operatorname{O}}_{9}})}^{6-}}\]has cyclic structure
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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)
\[\operatorname{M}\operatorname{n}\operatorname{S}{{\operatorname{O}}_{4}}\]
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B)
\[\operatorname{M}{{\operatorname{n}}_{2}}{{\operatorname{O}}_{7}}\]
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C)
\[\operatorname{M}\operatorname{n}{{\operatorname{O}}_{2}}\]
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D)
\[\operatorname{M}{{\operatorname{n}}_{2}}{{\operatorname{O}}_{3}}\]
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question_answer18) The reaction of phenol with benzoyl benzoateis known as :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Claisen reaction
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B)
Schotten-Baumann reaction
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C)
Reimer - Tiemeann reaction
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D)
Gatterman- Koch reaction
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question_answer19) Identify incorrect statement:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[C{{u}_{2}}O\] is colourless
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B)
Cupper (I) compounds
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C)
Copper (I) compounds are diamagnetic
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D)
\[{{\operatorname{Cu}}_{2}}\operatorname{S}\] is black
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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
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B)
0.237
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C)
0.435
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D)
0.205
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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)
\[{{\operatorname{AB}}_{3}}\]
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B)
\[{{\operatorname{AB}}_{4}}\]
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C)
\[{{\operatorname{A}}_{2}}{{B}_{5}}\]
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D)
\[{{\operatorname{AB}}_{2}}\]
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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)
\[6.626\times {{10}^{-34}}\operatorname{m}\]
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B)
\[6.626\times {{10}^{-38}}\operatorname{m}\]
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C)
\[6.626\times {{10}^{-31}}\operatorname{m}\]
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D)
\[6.626\times {{10}^{-30}}\operatorname{m}\]
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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)
\[M{{n}^{2+}}<C{{l}^{-}}<C{{r}^{3+}}<Cr\]
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B)
\[M{{n}^{2+}}<C{{r}^{3}}^{-}<C{{l}^{-}}<Cr\]
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C)
\[C{{r}^{3+}}<C{{l}^{-}}<M{{n}^{2+}}<Cr\]
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D)
\[C{{r}^{3+}}<C{{l}^{-}}<Cr<M{{n}^{2}}^{+}\]
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question_answer24) Smoke is an example of:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Solid disperse in solid
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B)
Gas dispersed in liquid
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C)
Solid dispersed in gas Smoke is an example of solid particles dispersed in gas.
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D)
Gas dispersed in solid
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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)
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B)
\[w=-nRT\ln \frac{{{V}_{2}}}{{{V}_{1}}}\](isothermal reversible expansion of an ideal gas)
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C)
\[w=-nRT\ln \frac{{{V}_{2}}}{{{V}_{1}}}\](isothermal reversible expansion of an ideal gas)
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D)
For a system of constant volume heat involved directly changes to internal energy.
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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 %
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B)
38.0%
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C)
35.5 %
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D)
41.5 %
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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
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B)
1.25 M
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C)
12.5 M
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D)
1.0 M
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question_answer28) Which of the following is the product of aldol condensation?
JEE Main Online Paper ( Held On 23 April 2013 )
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_answer29) The order of amines in gaseous state is :
JEE Main Online Paper ( Held On 23 April 2013 )
A)
\[{{1}^{0}}>{{2}^{0}}>{{3}^{0}}>\operatorname{N}{{\operatorname{H}}_{3}}\]
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B)
\[{{3}^{0}}>{{2}^{0}}>\operatorname{N}{{\operatorname{H}}_{3}}>{{1}^{0}}\]
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C)
done
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D)
\[{{\operatorname{NH}}_{3}}>{{1}^{0}}>{{2}^{0}}>{{3}^{0}}\]
done
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question_answer30) Monocarboxylic acids are functional isomers of:
JEE Main Online Paper ( Held On 23 April 2013 )
A)
Ethers
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B)
Amines
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C)
Esters
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D)
Alcohols
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