question_answer2) Which method of purification is represented by the following equation: \[Ti\,(s)+2{{I}_{2}}(g)\xrightarrow{523K}Ti{{I}_{4}}(g)\xrightarrow{1700K}\] \[Ti(s)+2{{I}_{2}}(g)\]
AIEEE Solved Paper-2012
question_answer3) Lithium forms body centred cubic structure. The length of the side of its unit cell is 351 pm. Atomic radius of the lithium will be :
AIEEE Solved Paper-2012
question_answer7) The density of a solution prepared by dissolving 120 g of urea (mol. mass = 60 u) in 1000 g of water is 1.15 g/mL. The molarity of this solution is :
AIEEE Solved Paper-2012
question_answer10) The standard reduction potentials for \[Z{{n}^{2}}/Zn,N{{i}^{2+}}/Ni\] and \[F{{e}^{2+}}/Fe\] are \[-0.76,-0.23\]and \[-0.44\] V respectively. The reaction \[X+{{Y}^{2}}+\to {{X}^{2+}}Y\] will be spontaneous when :
AIEEE Solved Paper-2012
question_answer12) The equilibrium constant \[({{K}_{c}})\] for the reaction \[{{N}_{2}}(g)+{{O}_{2}}(g)\to 2NO\,\,(g)\] at temperature T is \[4\times {{10}^{-4}}\]. The value of \[{{K}_{c}}\] for the reaction \[NO(g)\to \frac{1}{2}{{N}_{2}}(g)+\frac{1}{2}\,\,\,{{O}_{2}}(g)\] at the same temperature is :
AIEEE Solved Paper-2012
question_answer19) The electrons identified by quantum numbers n and \[\ell \] : (a) \[n=4,\,\,\ell =1\] (b) \[n=4,\,\,\ell =0\] (c) \[n=3,\,\,\ell =2\] (d) \[n=3,\,\,\ell =1\]can be placed in order of increasing energy as :
AIEEE Solved Paper-2012
question_answer20) For a first order reaction (A) \[\to \] products the concentration of A changes from 0.1 M to 0.025Min 40minutes. The rate of reaction when the concentration of A is 0.01 M is :
AIEEE Solved Paper-2012
question_answer21) Iron exhibits \[+2\] and \[+3\] oxidation states. Which of the following statements about iron is incorrect?
AIEEE Solved Paper-2012
A)
Ferrous oxide is more basic in nature than the ferric oxide.
doneclear
B)
Ferrous compounds are relatively more ionic than the corresponding ferric compounds
doneclear
C)
Ferrous compounds are less volatile than the corresponding ferric compounds
doneclear
D)
Ferrous compounds are more easily hydrolysed than the corresponding ferric compounds.
question_answer22) The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant, \[{{K}_{a}}\] of the acid is :
AIEEE Solved Paper-2012
question_answer23) Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
AIEEE Solved Paper-2012
question_answer24) \[{{K}_{f}}\] for water is \[1.86\]K kg \[mo{{l}^{-1}}\]. If your automobile radiator holds \[1.0\] kg of water, how may grams of ethylene glycol \[({{C}_{2}}{{H}_{6}}{{O}_{2}})\] must you add to get the freezing point of the solution lowered to \[-{{2.8}^{o}}C\]?
AIEEE Solved Paper-2012