Multiple Choice QuestionsThe van't Hoff factor, i for a compound which undergoes dissociation in one solvent and association in other solvent is respectively.
Less than one and less than one
Greater than one and less than one
Greater than one and greater than one
Greater than one and greater than one
B.
Greater than one and less than one
For dissociation, i > 1.
For association, i <1.
If the Eocell for a given reaction has a negative value then which of the following gives the correct relationships for the values of ΔGo and Keq ?
ΔGo < 0; Keq > 1
ΔGo < 0; Keq < 1
ΔGo > 0; Keq < 1
ΔGo > 0; Keq < 1
Which of the following elements is present as the impurity to the maximum extent in the big iron?
Carbon
Silicon
Phosphorus
Phosphorus
The electrode potentials for
Cu2+ (aq) + e- → Cu+ (aq) and Cu+ (aq) + e- →Cu (s)
are +0.15 V and +0.50V respectively. The value of 
will be
0.325 V
0.650 V
0.150 V
0.150 V
Which one of the following statements for the order of a reaction is correct?
Order is not influenced by stoichiometric coefficient of the reactants
Order of reaction is sum of power to the concentration terms of reactants to express the rate of reaction
Order of reaction is always the whole number
Order of reaction is always the whole number
Standard electrode potential for Sn4+ / Sn2+ couple is +0.15 V and that for the Cr3+/Cr couple is -0.74. These two couples in their standard state are connected to make a cell. The cell potential will be
+0.89 V
+0.18 V
+1.83 V
+1.83 V
The complexes [Co(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6] are the examples of which type of which type of isomerism?
Ionisation isomerism
Coordination isomerism
Geometrical isomerism
Geometrical isomerism
Which of the following pairs of metals is purified by van Arkel method?
Zr and Ti
Ag and Au
Ni and Fe
Ni and Fe
Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of
CrO42-
Cr2(SO3)3
CrSO4
CrSO4
The d- electron configurations of Cr3+, Mn2+ , Fe2+, and Co2+ are d4 ,d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour?
(At. no. Cr = 24, Mn = 25, Fe =26, Co = 27)
[Fe(H2O)6]2+
[Co(H2O)6]2+
[Cr(H2O)6]2+
[Cr(H2O)6]2+
Switch
