The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order

(a) Li+<K+<Na+<Rb+

(b) Rb+<K+<Na+<Li+

(c) K+<Na+<Rb+<Li+

(d) Na+<Li+<K+<Rb+

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Identify the wrong statement in the following:

(a) Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius

(b) Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius

(c) Atomic radius of the elements increases as one moves down the first group of the Periodic Table

(d) Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the Periodic Table

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Which of the following pairs has the same size?

(a) Fe2+,Ni2+

(b) Zr4+,Ti4+

(c)  Zr4+,Hf4+

(d) Zn2+,Hf4+

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The correct order of the decreasing ionic radii among the following isoelectronic species is

(a) Ca2+ > K+ > S2- > Cl-

(b) Cl- > S2- > Ca2+ > K+

(c) S2- > Cl- > K+ > Ca2+

(d) K+ > Ca2+ > Cl- > S2-

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Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?

(a) Cl<F<O<S                   (b) O<S<F<Cl

(c) F<S<O<Cl                   (d) S<O<Cl<F

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Electron Affinity (EA)
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Which one of the following compounds is a peroxide ?

(a) KO2

(b) BaO2

(c) MnO2

(d) NO2

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Modern Periodic Table
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The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr (24) and Mn (25) is
(a) Cr > Mn > V > Ti
(b) V > Mn > Cr > Ti
(c) Mn > Cr > Ti > V
(d) Ti > V > Cr > Mn

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Ionization Energy (IE)
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The sequence of ionic mobility in aqueous solution is

(a) K+>Na+>Rb+>Cs+

(b) Cs+>Rb+>K+>Na+

(c) Rb+>K+>Cs+>Na+

(d) Na+>K+>Rb+>Cs+

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Which one of the following arrangements does not give the correct picture of the trends indicated against it?

(a) F> Cl> Br> I:Oxidising power
(b) F2 < Cl2 > Br2 > I: Electron gain enthalpy
(c) F> Cl> Br> I: Bond dissociation energy
(d) F> Cl> Br> I2: Electronegativity

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Ionization Energy (IE)
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The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCOis:
(a) BeCO3 < MgCO3 < K2CO< CaCO3
(b) BeCO3 < MgCO3 < CaCO3 < K2CO3
(c) MgCO3 < BeCO3 < CaCO3 < K2CO3
(d) K2CO3 < MgCO3 < CaCO3 < BeCO3

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Stability of Compound
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