question_answer2) The treatment of \[C{{H}_{3}}MgX\] with \[C{{H}_{3}}C\equiv C-H\] produces
AIEEE Solved Paper-2007
A)
\[C{{H}_{3}}-\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,=\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\]
question_answer3) The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is
AIEEE Solved Paper-2007
question_answer4) The \[p{{K}_{a}}\] of a weak acid, HA is 4.80. The \[p{{K}_{b}}\] of a weak base, BOH, is 4.78. The pH of an aqueous solution of the corresponding salt, BA, will be
AIEEE Solved Paper-2007
question_answer6) Given \[E_{C{{r}^{3+}}/Cr}^{o}=-0.72\,V,\,\,E_{F{{e}^{2+}}/Fe}^{o}=-0.42\,V\]. The potential for the cell \[Cr\left| C{{r}^{3+}}(0.1\,M)\, \right|\left| F{{e}^{2+}}(0.1\,M)\, \right|\] Fe is
AIEEE Solved Paper-2007
question_answer7) Amount of oxalic acid present in a solution can be determined by its titration with \[KMn{{O}_{4}}\] solution in the presence of \[{{H}_{2}}S{{O}_{4}}\]. The titration gives unsatisfactory result when carried out in the presence of HCl, because HCl
AIEEE Solved Paper-2007
A)
reduces permanganate to \[M{{n}^{2+}}\].
doneclear
B)
oxidises oxalic acid to carbon dioxide and water.
doneclear
C)
gets oxidised by oxalic acid to chlorine.
doneclear
D)
furnishes \[{{H}^{+}}\] ions in addition to those from oxalic acid.
question_answer8) Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is
AIEEE Solved Paper-2007
\[\frac{1}{2}C{{l}_{2}}(g)\] to \[C{{l}^{-}}(aq)\]
(using the data, \[{{\Delta }_{diss}}H_{C{{l}_{2}}}^{\Theta }=240\,kJ\,mo{{l}^{-1}},\,{{\Delta }_{eg}}H_{Cl}^{\Theta }=-349\]\[kJ\,mo{{l}^{-1}},{{\Delta }_{hyd}}{{H}_{C{{l}^{-}}}}=-381\,kJ\,mo{{l}^{-1}})\] will be
question_answer10) Which of the following factors is of no significance for roasting sulphide ores to the oxides and not subjecting the sulphide ores to carbon reduction directly?
AIEEE Solved Paper-2007
A)
Metal sulphides are less stable than the corresponding oxides.
doneclear
B)
\[C{{O}_{2}}\] is more volatile than\[C{{S}_{2}}\].
doneclear
C)
Metal sulphides are thermodynamically more stable than \[C{{S}_{2}}\].
doneclear
D)
\[C{{O}_{2}}\] is thermodynamically more stable than\[C{{S}_{2}}\].
question_answer13) The ionization enthalpy of hydrogen atom is\[1.312\times {{10}^{6}}J\,mo{{l}^{-1}}\]. The energy required to excite the electron in the atom from \[n=1\]to \[n=2\] is
AIEEE Solved Paper-2007
question_answer14) The organic chloro compound, which shows complete stereochemical inversion during a \[{{S}_{N}}2\] reaction, is
AIEEE Solved Paper-2007
question_answer15) Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotized and then heated with cuprous bromide. The reaction mixture so formed contains
AIEEE Solved Paper-2007
question_answer16) In the following sequence of reactions, the alkene affords the compound 'B' \[C{{H}_{3}}CH=CHC{{H}_{3}}\xrightarrow{{{O}_{3}}}A\,\xrightarrow[Zn]{{{H}_{2}}O}\,B\]. The compound B is
AIEEE Solved Paper-2007
question_answer18) At \[{{80}^{o}}C\], the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B' is 1000 mm Hg. If a mixture solution of 'A' and 'B' boils at \[{{80}^{o}}C\] and 1 atm pressure, the amount of 'A' in the mixture is (1 atm = 760 mm Hg)
AIEEE Solved Paper-2007
question_answer19) For a reaction \[\frac{1}{2}A\xrightarrow{{}}2B\], rate of disappearance of 'A' is related to the rate of appearance of 'B' by the expression
AIEEE Solved Paper-2007
question_answer20) The equilibrium constants \[{{K}_{{{p}_{1}}}}\] and \[{{K}_{{{p}_{2}}}}\] for the reactions \[X2Y\] and \[ZP+Q\], respectively are in the ratio of 1 : 9. If the degree of dissociation of X and Z be equal then the ratio of total pressures at these equilibria is
AIEEE Solved Paper-2007
question_answer21) In context with the industrial preparation of hydrogen from water gas \[(CO+{{H}_{2}})\], which of the following is the correct statement?
AIEEE Solved Paper-2007
A)
\[{{H}_{2}}\] is removed through occlusion with Pd.
doneclear
B)
CO is oxidised to \[C{{O}_{2}}\] with steam in the presence of a catalyst followed by absorption of \[C{{O}_{2}}\] in alkali.
doneclear
C)
CO and \[{{H}_{2}}\] are fractionally separated using differences in their densities.
doneclear
D)
CO is removed by absorption in aqueous \[C{{u}_{2}}C{{l}_{2}}\] solution.
question_answer22) In which of the following octahedral complexes of Co (atomic number 27), will the magnitude of \[{{\Delta }_{o}}\]be the highest?
AIEEE Solved Paper-2007
question_answer23) The coordination number and the oxidation state of the element 'E' in the complex \[[E{{(en)}_{2}}({{C}_{2}}{{O}_{4}})]N{{O}_{2}}\] (where (en) is ethylene diamine) are, respectively,
AIEEE Solved Paper-2007
question_answer25) Larger number of oxidation states are exhibited by the actinoids than those by lanthanoids, the main reason being
AIEEE Solved Paper-2007
A)
more energy difference between 5f and 6d than between 4f and 5d orbitals.
doneclear
B)
more reactive nature of the actinoids than the lanthanoids.
doneclear
C)
4f orbitals more diffused than the 5f orbitals.
doneclear
D)
lesser energy difference between 5f and 6d than between 4f and 5d orbitals.
question_answer26) In a compound, atoms of element Y form \[ccp\] lattice and those of element X occupy 2/3rd of tetrahedral voids. The formula of the compound will be
AIEEE Solved Paper-2007
question_answer27) Gold numbers of protective colloids (A), (B), (C) and (D) are 0.50, 0.01, 0.10 and 0.005, respectively. The correct order of their protective powers is
AIEEE Solved Paper-2007
question_answer28) The vapour pressure of water at \[{{20}^{o}}C\] is 17.5 mm Hg. If 18 g of glucose \[({{C}_{6}}{{H}_{12}}{{O}_{6}})\] is added to 178.2 g of water at \[{{20}^{o}}C\], the vapour pressure of the resulting solution will be
AIEEE Solved Paper-2007
question_answer32) Standard entropy of \[{{X}_{2}},{{Y}_{2}}\] and \[X{{Y}_{3}}\] are 60, 40 and \[50\,J{{K}^{-1}}mo{{l}^{-1}}\], respectively. For the reaction, \[\frac{1}{2}{{X}_{2}}+\frac{3}{2}{{Y}_{2}}\xrightarrow{{}}X{{Y}_{3}}\], \[\Delta H=-30\,kJ\], to be at equilibrium, the temperature will be
AIEEE Solved Paper-2007
question_answer33) The electrophile, \[{{E}^{\Theta }}\] attacks the benzene ring to generate the intermediate\[\sigma \]-complex. Of the following, which \[\sigma \]-complex is of lowest energy?
AIEEE Solved Paper-2007
question_answer35) This question contains Statement-1 and Statement -2. Of the four choices given after the statements, choose the one that best describes the two statements. Statement -1: Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion. and Statement -2: For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei it decreases with increasing Z.
AIEEE Solved Paper-2007
A)
Statement -1 is true, Statement- 2 is true; Statement -2 is not a correct explanation for Statement-1
doneclear
B)
Statement -1 is true, Statement- 2 is false
doneclear
C)
Statement -1 is false, Statement- 2 is true
doneclear
D)
Statement -1 is true, Statement- 2 is true; Statement -2 is a correct explanation for Statement-1