CBSE
Multiple Choice QuestionsIn the change[Cu(H2O)6F]2+ [CuCl(H2O)5]+, the colour changes from
blue to green
blue to pink
pink to green
pink to blue
Assertion : In high spin situation, configuration
of d5 ions will be .
Reason : In high spin situation, pairing energy is less than crystal field energy.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Which of the following metal ions will form complexes with the same magnetic moment and geometry irrespective of the nature of ligands?
Ni2+
Fe2+
Cu2+
Co2+
Assertion:
is named as tetrakis (ethylene-diammine)hydroxo-m-imido dicobalt (III) ion.
Reason : In naming polynuclear complexes i.e., containing two or more metal atoms joined by bridging ligands, the word is added with hyphen before the name of such ligands.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Match list I with list II and select the correct answer using the codes given below the lists.
| List I Metal ion |
List II Magnetic moment (B.M) |
| A. Cr3+ | 1. |
| B. Fe2+ | 2. |
| C. Ni2+ | 3. |
| D. Mn2+ | 4. |
| 5. |
A-1, B-3, C-5, D-4
A-2, B-3,C-5,D-1
A-4, B-3, C-5, D-1
A-4, B-5, C-3, D-1
Which of the following does not contain any coordinate bond?
H3O+
BF
HF
NH
Which of the following is considered as an anticancer species?
Wavelength of red light is absorbed by the complex
[Cu(CN)4]2-
[Cu(NH3)4]2+
CuSO4
Cu(CN)2
CO binds itself to metal atoms through :
carbon atom only
oxygen atom only
carbon and oxygen atom
does not bind
Assertion : Al forms [AlF6]3- but B does not form [BF6]3-.
Reason : B does not react with fluorine.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
