NEET-UG and JEE Main Chemistry · Class 12
Werner's theory — NEET & JEE Questions
Werner's theory is a topic in Coordination Compounds, a Class 12 Chemistry chapter of the NEET-UG and JEE Main syllabus. TestBudy holds 12 published NEET-UG and JEE Main questions on Werner's theory, each with the marking scheme of the real paper.
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Werner's theory MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
In Werner's theory, the primary valency of a metal in a coordination compound corresponds to its
- A. oxidation state
- B. coordination number
- C. number of lone pairs
- D. magnetic moment
Werner's secondary valency corresponds most closely to the
- A. coordination number
- B. oxidation state only
- C. atomic number
- D. mass number
According to Werner's theory, secondary valencies are
- A. directional and determine geometry
- B. non-directional and unrelated to geometry
- C. satisfied only by anions outside the coordination sphere
- D. always equal to the oxidation state
In a coordination formula, species written inside square brackets belong to the
- A. coordination sphere
- B. outer ionisation sphere only
- C. solvent only
- D. crystal lattice but not the complex
For , what is the coordination number of cobalt?
- A. 3
- B. 4
- C. 6
- D. 9
In , what is the oxidation state of cobalt?
- A. 0
- B. +1
- C. +2
- D. +3
Which ions are produced outside the coordination sphere when dissolves in water?
- A. Three ions
- B. Six ions
- C. Three ions
- D. No ions
For , how many chloride ions are outside the coordination sphere?
- A. 1
- B. 2
- C. 3
- D. 5
A cobalt complex of formula gives three moles of precipitate per mole of complex with excess . Which Werner formulation is most consistent?
- A.
- B.
- C.
- D.
A compound produces two moles of per mole with excess . Which coordination formula fits?
- A.
- B.
- C.
- D.
Common mistakes in Werner's theory
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Interchanges the meanings of primary and secondary valency.
- Uses empirical composition alone and ignores how precipitation identifies chloride ions outside the coordination sphere.
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