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question_answer1) The artificial sweetener that has the highest sweetness value in comparison to cane sugar is :
JEE Main Online Paper (Held On 09 April 2016)
A)
Saccharin
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B)
Sucralose
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C)
Alitame
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D)
Aspartane
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question_answer2) The non-metal that does not exhibit positive oxidation state is :
JEE Main Online Paper (Held On 09 April 2016)
A)
Fluorine
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B)
Oxygen
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C)
Chlorine
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D)
Iodine
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question_answer3)
The reaction of ozone with oxygen atoms in the presence of chlorine atoms can occur by a two step process show below:
\[{{O}_{3}}(g)+C{{l}^{\bullet }}(g)\to {{O}_{2}}(g)+Cl{{O}^{\bullet }}(g)\]……(i)
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\[{{k}_{i}}=5.2\times {{10}^{9}}L\,mo{{l}^{-1}}{{s}^{-1}}\]
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\[Cl{{O}^{\bullet }}(g)+{{O}^{\bullet }}(g)\to {{O}_{2}}(g)+C{{l}^{\bullet }}(g)\]……(ii)
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\[{{k}_{ii}}=2.6\times {{10}^{10}}L\,mo{{l}^{-1}}{{s}^{-1}}\]
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The closest rate constant for the overall reaction\[{{O}_{3}}(g)+{{O}^{\bullet }}(g)\to 2{{O}_{2}}(g)\] is:
JEE Main Online Paper (Held On 09 April 2016)
A)
\[1.4\times {{10}^{20}}L\,mo{{l}^{-1}}\,{{s}^{-1}}\]
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B)
\[5.2\times {{10}^{9}}L\,mo{{l}^{-1}}\,{{s}^{-1}}\]
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C)
\[3.1\times {{10}^{10}}L\,mo{{l}^{-1}}\,{{s}^{-1}}\]
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D)
\[2.6\times {{10}^{10}}L\,mo{{l}^{-1}}\,{{s}^{-1}}\]
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question_answer4) 5L of an alkane requires 25 L of oxygen for its complete combustion. If all volumes are measured at constant temperature and pressure, the alkane is:
JEE Main Online Paper (Held On 09 April 2016)
A)
Butane
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B)
Isobutane
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C)
Ethane
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D)
Propane
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question_answer5)
Match the items in Column I with its main use listed in Column II:
Column I |
Column II |
(a) Silica gel |
(i) Transistor |
(b) Silicon |
(ii) Ion-exchanger |
(c) Silicone |
(iii) Drying agent |
(d) Silicate |
(iv) Sealant |
JEE Main Online Paper (Held On 09 April 2016)
A)
(A)-(iii), (B)-(i), (C)-(iv), (D)-(ii)
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B)
(A)-(ii), (B)-(i), (C)-(iv), (D)-(iii)
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C)
(A)-(iv), (B)-(i), (C)-(ii), (D)-(iii)
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D)
(A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)
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question_answer6) The group of molecules having identical shape is :
JEE Main Online Paper (Held On 09 April 2016)
A)
\[PC{{l}_{5}},I{{F}_{5}},Xe{{O}_{2}}{{F}_{2}}\]
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B)
\[B{{F}_{3}},PC{{l}_{3}},Xe{{O}_{3}}\]
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C)
\[Cl{{F}_{3}},XeO{{F}_{2}},XeF_{3}^{+}\]
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D)
\[S{{F}_{4}},Xe{{F}_{4}},CC{{l}_{4}}\]
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question_answer7) Which one of the following species is stable in aqueous solution?
JEE Main Online Paper (Held On 09 April 2016)
A)
\[MnO_{4}^{2-}\]
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B)
\[MnO_{4}^{3-}\]
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C)
\[C{{u}^{+}}\]
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D)
\[C{{r}^{2+}}\]
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question_answer8) For the reaction, \[A(g)+B(g)\to C(g)+D(g),\Delta {{H}^{0}}\]and\[\Delta {{S}^{0}}\] are, respectively,\[-29.8kJ\,mo{{l}^{-1}}\]and\[-0.100kJ\,{{K}^{-1}}mo{{l}^{-1}}\]at 298 K. The equilibrium constant for the reaction at 298 K is:
JEE Main Online Paper (Held On 09 April 2016)
A)
1
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B)
10
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C)
1.0 × 10.10
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D)
1.0 × 1010
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question_answer9) Assertion : Rayon is a semisynthetic polymer whose properties are better than natural cotton. Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.
JEE Main Online Paper (Held On 09 April 2016)
A)
Both assertion and reason are correct, and the reason is the correct explanation for the assertion.
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B)
Both assertion and reason are incorrect.
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C)
Assertion is incorrect statement, but the reason is correct.
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D)
Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.
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question_answer10) The hydrocarbon with seven carbon atoms containing a neopentyl and a vinyl group is :
JEE Main Online Paper (Held On 09 April 2016)
A)
4,4-dimethylpentene
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B)
2,2-dimethyl-4-pentene
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C)
Isopropyl-2-butene
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D)
2,2-dimethyl-3-pentene
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question_answer11) The gas evolved on heating \[C{{H}_{3}}MgBr\]in methanol is:
JEE Main Online Paper (Held On 09 April 2016)
A)
Propane
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B)
Ethane
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C)
HBr
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D)
Methane
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question_answer12) Identify the correct trend given below: (Atomic No.: Ti = 22, Cr = 24 and Mo = 42)
JEE Main Online Paper (Held On 09 April 2016)
A)
\[{{\Delta }_{o}}\]of\[{{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}}<{{[Mo{{({{H}_{2}}O)}_{6}}]}^{2+}}\]and\[{{\Delta }_{o}}\]of\[{{[Ti{{({{H}_{2}}O)}_{6}}]}^{3+}}>{{[Ti{{({{H}_{2}}O)}_{6}}]}^{2+}}\]
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B)
\[{{\Delta }_{o}}\]of\[{{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}}>{{[Mo{{({{H}_{2}}O)}_{6}}]}^{2+}}\]and\[{{\Delta }_{o}}\]of\[{{[Ti{{({{H}_{2}}O)}_{6}}]}^{3+}}<{{[Ti{{({{H}_{2}}O)}_{6}}]}^{2+}}\]
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C)
\[{{\Delta }_{o}}\]of\[{{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}}>{{[Mo{{({{H}_{2}}O)}_{6}}]}^{2+}}\]and \[{{\Delta }_{o}}\]of\[{{[Ti{{({{H}_{2}}O)}_{6}}]}^{3+}}<{{[Ti{{({{H}_{2}}O)}_{6}}]}^{2+}}\]
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D)
\[{{\Delta }_{o}}\]of\[{{[Cr{{({{H}_{2}}O)}_{6}}]}^{2+}}<{{[Mo{{({{H}_{2}}O)}_{6}}]}^{2+}}\]and \[{{\Delta }_{o}}\]of\[{{[Ti{{({{H}_{2}}O)}_{6}}]}^{3+}}>{{[Ti{{({{H}_{2}}O)}_{6}}]}^{2+}}\]
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question_answer13) The most appropriate method of making egg-albumin sol is:
JEE Main Online Paper (Held On 09 April 2016)
A)
Keep the egg in boiling water for 10 minutes. After removing the shell, transfer the yellow part of the content to 100 mL of 5% w/V saline solution and homogenize with a mechanical shaker.
done
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B)
Break an egg carefully and transfer the transparent part of the content to 100 mL of 5% w/V saline solution and stir well.
done
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C)
Keep the egg in boiling water for 10 minutes. After removing the shell, transfer the white part of the content to 100 mL of 5% w/V saline solution and homogenize with a mechanical shaker.
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D)
Break an egg carefully and transfer only the yellow part of the content to 100 mL of 5% w/V saline solution and stir well.
done
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question_answer14) Which one of the following complexes will consume more equivalents of aqueous solution of \[Ag(N{{O}_{3}})\]?
JEE Main Online Paper (Held On 09 April 2016)
A)
\[N{{a}_{3}}[CrC{{l}_{6}}]\]
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B)
\[[Cr{{({{H}_{2}}O)}_{5}}Cl]C{{l}_{2}}\]
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C)
\[[Cr{{({{H}_{2}}O)}_{6}}]C{{l}_{3}}\]
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D)
\[[N{{a}_{2}}(CrC{{l}_{5}})({{H}_{2}}O)]\]
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question_answer15) At very high pressures, the compressibility factor of one mole of a gas is given by :
JEE Main Online Paper (Held On 09 April 2016)
A)
\[1+\frac{pb}{RT}\]
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B)
\[\frac{pb}{RT}\]
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C)
\[1-\frac{b}{(VRT)}\]
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D)
\[1-\frac{pb}{RT}\]
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question_answer16) A reaction at 1 bar is non-spontaneous at low temperature but becomes spontaneous at high temperature. Identify the correct statement about the reaction among the following:
JEE Main Online Paper (Held On 09 April 2016)
A)
Both\[\Delta H\] and \[\Delta S\] are positive.
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B)
\[\Delta H\]is negative while \[\Delta S\] is positive.
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C)
\[\Delta H\]is positive while\[\Delta S\]is negative.
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D)
Both \[\Delta S\]and \[\Delta S\] are negative.
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question_answer17) Which intermolecular force is most responsible in allowing xenon gas to liquefy?
JEE Main Online Paper (Held On 09 April 2016)
A)
Instantaneous dipole-induced dipole
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B)
Ionic
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C)
Ion-dipole
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D)
Dipole-dipole
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question_answer18) Identify the incorrect statement regarding heavy water:
JEE Main Online Paper (Held On 09 April 2016)
A)
It reacts with \[Ca{{C}_{2}}\]to produce \[{{C}_{2}}{{D}_{2}}\] and \[Ca{{(OD)}_{2}}.\]
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B)
It is used as a coolant in nuclear reactors.
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C)
It reacts with \[A{{l}_{4}}{{C}_{3}}\] to produce \[C{{D}_{4}}\] and \[Al{{(OD)}_{3}}.\]
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D)
It reacts with \[S{{O}_{3}}\]to form deuterated sulphuric acid \[({{D}_{2}}S{{O}_{4}}).\]
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question_answer19)
A particular adsorption process has the following characteristics:
(i) It arises due to vander Waals forces and
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(ii) it is reversible. Identify the correct statement that describes the above adsorption process:
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JEE Main Online Paper (Held On 09 April 2016)
A)
Enthalpy of adsorption is greater than \[100 \text{kJ}\,\text{mo}{{\text{l}}^{\text{-1}}}.\]
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B)
Adsorption is monolayer.
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C)
Adsorption increases with increase in temperature.
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D)
Energy of activation is low.
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question_answer20)
The plot shows the variation of .ln Kp versus temperature for the two reactions.
\[M(s)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}MO(s)\]and
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\[C(s)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow[{}]{{}}CO(s)\]
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Identify the correct statement:
JEE Main Online Paper (Held On 09 April 2016)
A)
At T > 1200 K, carbon will reduce MO(s) to M(s).
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B)
At T < 1200 K, oxidation of carbon is unfavourable.
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C)
Oxidation of carbon is favourable at all temperatures.
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D)
At \[T<1200K,\] the reaction \[MO(s)+C(s)\to M(s)+CO(g)\]is spontaneous.
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question_answer21) BOD stands for:
JEE Main Online Paper (Held On 09 April 2016)
A)
Biochemical Oxygen Demand
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B)
Biochemical Oxidation Demand
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C)
Biological Oxygen Demand
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D)
Bacterial Oxidation Demand
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question_answer22) What will occur if a block of copper metal is dropped into a beaker containing a solution of\[1MZnS{{O}_{4}}?\]
JEE Main Online Paper (Held On 09 April 2016)
A)
The copper metal will dissolve and zinc metal will be deposited.
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B)
The copper metal will dissolve with evolution of oxygen gas.
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C)
The copper metal will dissolve with evolution of hydrogen gas.
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D)
No reaction will occur.
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question_answer23) The test to distinguish primary, secondary and tertiary amine is:
JEE Main Online Paper (Held On 09 April 2016)
A)
Mustard oil test
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B)
\[{{C}_{6}}{{H}_{5}}S{{O}_{2}}Cl\]
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C)
Sandmeyer's reaction
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D)
Carbylamine reaction
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question_answer24) The total number of orbitals associated with the principal quantum number 5 is:
JEE Main Online Paper (Held On 09 April 2016)
A)
5
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B)
20
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C)
25
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D)
10
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question_answer25) The correct order of the solubility of alkaline-earth metal sulphates in water is:
JEE Main Online Paper (Held On 09 April 2016)
A)
Mg < Sr < Ca < Ba
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B)
Mg > Ca> Sr > Ba
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C)
Mg > Sr > Ca > Ba
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D)
Mg < Ca < Sr < Ba
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question_answer26) An organic compound contains C, H and S. The minimum molecular weight of the compound containing 8% sulphur is: (atomic weight of S = 32 amu)
JEE Main Online Paper (Held On 09 April 2016)
A)
300 g \[\text{mo}{{\text{l}}^{\text{-1}}}\]
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B)
400 g \[\text{mo}{{\text{l}}^{\text{-1}}}\]
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C)
200 g \[\text{mo}{{\text{l}}^{\text{-1}}}\]
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D)
600 g \[\text{mo}{{\text{l}}^{\text{-1}}}\]
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question_answer27) Bouveault-Blanc reduction reaction involves:
JEE Main Online Paper (Held On 09 April 2016)
A)
Reduction of an anhydride with \[LiAl{{H}_{4}}.\]
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B)
Reduction of an ester with \[Na/{{C}_{2}}{{H}_{5}}OH.\]
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C)
Reduction of a carbonyl compound with Na/Hg and HCl.
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D)
Reduction of an acyl halide with H2/Pd.
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question_answer28)
Consider the following sequence for aspartic acid: The pl (isoelectric point) of aspartic acid is:
JEE Main Online Paper (Held On 09 April 2016)
A)
5.74
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B)
3.65
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C)
2.77
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D)
1.88
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question_answer29) The amount of arsenic pentasulphide that can be obtained when 35.5 g arsenic acid is treated with excess \[{{H}_{2}}S\]in the presence of conc. HCl (assuming 100% conversion)
JEE Main Online Paper (Held On 09 April 2016)
A)
0.25 mol
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B)
0.125 mol
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C)
0.333 mol
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D)
0.50 mol
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question_answer30) The solubility of \[{{N}_{2}}\]in water at 300 K and 500 torr partial pressure is 0.01 g \[{{\text{L}}^{\text{-1}}}\]. The solubility (in g \[{{\text{L}}^{\text{-1}}}\]) at 750 torr partial pressure is :
JEE Main Online Paper (Held On 09 April 2016)
A)
0.02
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B)
0.015
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C)
0.0075
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D)
0.005
done
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