In the separation of Cu2+ and Cd2+ in 2nd group of qualitative analysis of cations,tetramine copper (II) sulphate and tetrammine cadmium (II) sulphate react with KCN to form the corresponding cyano complexes,which one of the following pairs of the complexes and their relative stability enables the separation of Cu2+ and Cd2+

1.  K3[Cu(CN)4]:less stable and K2[Cd(CN)4]:more stable

2.  K3[Cu(CN)4]:more stable and K2[Cd(CN)4]:less stable

3.  K2[Cu(CN)4]:less stable and K2[Cd(CN)4]:more stable 

4.  K2[Cu(CN)4]:more stable and K2[Cd(CN)4]:less stable

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4
Correct Answer :

K3[Cu(CN)4]:more stable and K2[Cd(CN)4]:less stable


Explanation :
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Which one of the following forms a colourless solution in aqueous medium (Atomic number : Sc = 21, Ti = 22, V = 23, Cr = 24)

1.  V3+

2.  Cr3+

3.  Ti3+

4.  Sc3+

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4
Correct Answer :

Sc3+


Explanation :
No Explanation available for this question

Of the following transition metals,the maximum numbers of oxidation states are exhibited by:

1.  chromium (Z = 24)

2.  manganese (Z = 25)

3.  iron (Z = 26)

4.  titanium (Z = 22)

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4
Correct Answer :

manganese (Z = 25)


Explanation :
No Explanation available for this question

Which one of the following has magnesium

1.  Vitamin B12

2.  Chlorophyll

3.  Haemocyanin

4.  Carbonic anhydrase

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4
Correct Answer :

Chlorophyll


Explanation :
No Explanation available for this question

Among the following the electron deficient compound is:

1.  BCl3

2.  CCl4

3.  PCl5

4.  BeCl2

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4
Correct Answer :

BCl3


Explanation :
No Explanation available for this question

The relationship between the dissociation energy of N2 and N2+ is:

1.  dissociation energy of N2+ > dissociation energy of N2

2.  dissociation energy of N2 = dissociation energy of N2+

3.  dissociation energy of N2 > dissociation energy of N2+

4.  dissociation energy of N2 can either be lower or higher than the dissociation energy of N2+

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4
Correct Answer :

dissociation energy of N2 > dissociation energy of N2+


Explanation :
No Explanation available for this question

Among the following ions the pπ - dπ overlap could be present in:

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
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Which one of the following arrangements does not truly represent the property indicated against it

1.  Br2 < Cl2 < F2:Oxidising power

2.  Br2 < Cl2 < F2:Electronegativity

3.  Br2 < F2 < Cl2:Electron affinity

4.  Br2 < Cl2 < F2:Bond energy

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4
Correct Answer :

Br2 < Cl2 < F2:Bond energy


Explanation :
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Which of the following complexes exhibits the highest paramagnetic behaviour where gly = glycine, en = ethylenediamine and bpy = bipyridyl moities (At no : Ti = 22, V = 23, Fe = 26, Co = 27)

1.  [V (gly)2 (OH)2 (NH3)2]+

2.  [Fe (en) (bpy)(NH3)2]2+

3.  [CO(OX)2(OH)2]-

4.  [Ti(NH3)6]3+

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Correct Answer :

[CO(OX)2(OH)2]-


Explanation :
No Explanation available for this question

Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH

1.  SrCl2

2.  BaCl2

3.  MgCl2

4.  CaCl2

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4
Correct Answer :

BaCl2


Explanation :
No Explanation available for this question
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