Werner’s Theory NEET Questions

Werner’s Theory MCQ Questions

1.
Who proposed the theory of coordination compounds?
A.
Linus Pauling
B.
Niels Bohr
C.
Alfred Werner
D.
J.J. Thomson
ANSWER :
C. Alfred Werner
2.
According to Werner's theory, the two types of valences shown by metal ions in coordination compounds are:
A.
Ionic and covalent
B.
Positive and negative
C.
Primary and secondary
D.
Sigma and pi
ANSWER :
C. Primary and secondary
3.
Primary valence according to Werner's theory corresponds to:
A.
Coordination number
B.
Oxidation state of the metal
C.
Geometry of the complex
D.
Number of ligands
ANSWER :
B. Oxidation state of the metal
4.
Secondary valence according to Werner's theory is equal to:
A.
Oxidation number
B.
Coordination number
C.
Number of unpaired electrons
D.
Atomic number
ANSWER :
B. Coordination number
5.
Which of the following statements about primary valence is INCORRECT?
A.
It is non-directional and fixed for the metal
B.
It is satisfied by negative ions
C.
It corresponds to the oxidation state
D.
It is ionizable
ANSWER :
A. It is non-directional and fixed for the metal
6.
According to Werner, the secondary valences are:
A.
Always satisfied only by neutral molecules
B.
Non-ionizable and directional (have fixed spatial arrangement)
C.
Ionizable and directional
D.
Ionizable and non-directional
ANSWER :
B. Non-ionizable and directional (have fixed spatial arrangement)