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Co-ordination Basic terms- MCQ - Basic level

Dear Readers,

Compared to other sections, Chemistry is considered to be the most scoring section. If prepared thoroughly, chemistry can help students to secure a meritorious position in the exam. These questions are very important in achieving your success in Exams after 12th.

Q1.  The co-ordination number of copper in cuprammonium sulphate is

  •   2
  •  6
  •  4
  •  -4

In Cuprammonium sulphate co-ordination no. of is 4.

Q2.  Which of the following acts as a bidentate ligand in complex formation

  •   Acetate
  •  Oxalate
  •  Thiocyanate
  •  EDTA

As it makes use of its two atoms to form two co-ordinate covalent bonds with the central metal ion.

Q3.  Which of the following ligands forms a chelate

  •   Acetate
  •   Oxalate
  •   Cyanide
  •   Ammonia

Ammonia

Q4.  According to Werner's theory

  •  Primary valency can be ionized
  •  Secondary valency can be ionized
  • &nbps;Primary and secondary valencies both cannot be ionized
  • &npbs;Only primary valency cannot be ionized

Primary valency can be ionized

Q5.  Which of the following is not true for ligand-metal complex

  •  Larger the ligand, the more stable is the metal-ligand bond
  •  Highly charged ligand forms strong bond
  •  Larger the permanent dipole moment of ligand, the more stable is the bond
  •   Greater the ionization potential of central metal, the stronger is the bond

The charge does not decide the formation of bond but availability of lone pair decide the formation of Co-ordinate bond.

Q6.  Bidentate ligand is

  •  CN-
  •   Ethylene diammine (en)
  •  SCN-
  •  EDTA

Ethylene diammine (en)

Q7.  Which is the example of hexadentate ligand

  •  2, 2—dipyridyl
  •  Dimethyl glyoxime
  •  Aminodiacetate ion
  •  Ethylene diammine tetra acetate ion [EDTA]

Ethylene diammine tetra acetate ion

Q8.  The coordination number of a metal in coordination compounds is

  •  Same as primary valency
  •   Sum of primary and secondary valencies
  •  Same as secondary valency
  •  None of these

According to modern view primary valency of complex compound is its oxidation number while secondary valency is the co-ordination number.

Q9.  Ligand in a complex salt are

  •  Anions linked by coordinate bonds to a central metal atom or ion
  •  Cations linked by coordinate bonds to a central metal atom or ion
  •  Molecules linked by coordinate bonds to a central metal atom or ion
  •  Ions or molecules linked by coordinate bonds to a central metal atom or ion

Ions or molecules linked by coordinate bonds to a central metal atom or ion

Q10. Ions or molecules linked by coordinate bonds to a central metal atom or ion

  •  It is a small molecule
  •  It is a small molecule
  •   It is a negatively charged ion
  •   It is a positively charged ion of the above

It is a small molecule



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