Which of the following is true for the species 3d4 configuration ?

(1) Cr2+ is reducing in nature                               

(2) Mn3+ is oxidising in nature.

(3) Both (A) and (B)                                             

(4) None of these

Subtopic:  d-Block Elements- Properties & Uses |
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In which compound does vanadium have an oxidation number of +4?

(A) NH4VO2                                 

(B) K4VCN6

(C) VSO4                                     

(D) VOSO4

Subtopic:  d-Block Elements- Properties & Uses |
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Among the following, the species that is both paramagnetic and coloured is :

(A) MnO42-                                     

(B) TiCl62- 

(C) VO43-                                       

(D) CrO2Cl2

Subtopic:  d-Block Elements- Properties & Uses |
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Arrange the following species in the increasing order of their magnetic properties.

VCl3    VOSO4    Na3VO4       VH2O6SO4.H2O

  I              II                  III                      IV

 

(1) III<II<I<IV                                         

(2) III<IV<II<I

(3) II<III<I<IV                                         

(4) IV<I<II<III

Subtopic:  d-Block Elements- Properties & Uses |
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Which of the following increasing order of oxidising power is correct for the following species?

           VO2+, MnO4-, Cr2O72-

(A) VO2+<Cr2O72-<MnO4-                           

(B) VO2+<MnO4-<Cr2O72-

(C) Cr2O72-<VO2+<MnO4-,                           

(D) Cr2O72-<MnO4-<VO2+

Subtopic:  d-Block Elements- Properties & Uses |
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In which of the following oxoanions the oxidation state of the central atom is not the same as that of its group number in the periodic table?

(A) MnO4-                               

(B) Cr2O72-

(C) VO43-                                 

(D) FeO42-

Subtopic:  d-Block Elements- Properties & Uses |
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At 300°C, FeCl3 :

1. Decomposes into FeCl2 and Cl2.               

2. Decomposes into Fe and Cl2.

3. Sublimes go give liquid FeCl3                         

4. Sublimes to give gaseous dimmer FeCl32.

Subtopic:  Chemistry of Mn and Cr Compounds |
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Anhydrous ferric chloride is prepared by

(1) Heating hydrated ferric chloride at a high temperature in a stream of air.

(2) Heating metallic iron in a stream of dry chlorine gas.

(3) Reaction of ferric oxide with HCl (aq).

(4) Reaction of metallic iron with HCl (aq).

Subtopic:  Chemistry of Mn and Cr Compounds |
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Anhydrous ferrous sulphate on heating gives :

1. Both SO2 and SO3                         

2. SO2 only

3. SO3 only                                       

4. Fe2SO43 only

Subtopic:  Chemistry of Mn and Cr Compounds |
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FeCl3.6H2O+C CH32CH3O2Products

Reaction products are :

(A) FeCl3, CH3OH and CH3COCH3                       

(B) CH3OFe, HCl and H2O

(C) FeCl2, HCl and CH3COCH3                             

(D) FeOH3, FeCl3 and CH3COCH3

Subtopic:  d-Block Elements- Properties & Uses |
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