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Valence Bond Theory, Class 12 Chemistry NCERT Solutions

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. When two isomers are mirror images of each other and rotates the plane of polarized light in opposite directions, it is a type of:
 
 
 
 

Question 1 of 20

2. Valence bond theory helps to know about:
 
 
 
 

Question 2 of 20

3. Dichlorotetrammine cobalt(III) ion exhibits:
 
 
 
 

Question 3 of 20

4. [Pt(NH3)4Cl2]Br2 and [Pt(NH3)4Br2]Cl2 is a type of:
 
 
 
 

Question 4 of 20

5. The oxidation number of Pt in the complex [Pt(C2H4)Cl3]– is:
 
 
 
 

Question 5 of 20

6. The d and l isomer of [Co(en)3]3+ are type of:
 
 
 
 

Question 6 of 20

7. Compounds which give different ions in solution although they have same composition are called:
 
 
 
 

Question 7 of 20

8. The shape of [Co(NH3)6]3+ according to VBT is:
 
 
 
 

Question 8 of 20

9. The electronic configuration of chromium in [Cr(NH3)6]3+ is:
 
 
 
 

Question 9 of 20

10. Which would exhibit coordination isomerism?
 
 
 
 

Question 10 of 20

11. K3[CoF6] is high spin complex. What is the hybrid state of Co atom in this complex?
 
 
 
 

Question 11 of 20

12. Phenomenon of existence of two or more substances having the same molecular formulae but different structural or special arrangements is:
 
 
 
 

Question 12 of 20

13. In the complex [Ni(H2O)2(NH3)4]2+ the no. of unpaired electrons is
 
 
 
 

Question 13 of 20

14. When both positive and negative ions of a salt are complex ions and the two isomers differs in the distribution of ligands in the cation and the anion; it is a type of:
 
 
 
 

Question 14 of 20

15. According to VBT, the shape of [NiCl4]-2 is tetrahedral and the hybridization state of Ni is:
 
 
 
 

Question 15 of 20

16. Which among the following can form linkage isomer?
 
 
 
 

Question 16 of 20

17. According to VBT, the shape of [CoF6]-3 is:
 
 
 
 

Question 17 of 20

18. [Co(NH3)4Cl2]NO2 and [Co(NH3)4Cl(NO2)]Cl exhibit which type of isomerism?
 
 
 
 

Question 18 of 20

19. All inner orbital complexes are low spin complexes.
 
 
 
 

Question 19 of 20

20. Which would exhibit ionisation isomerism?
 
 
 
 

Question 20 of 20