Basic Concepts of Chemistry Quiz Online Practice Test

1. What is the equilibrium between two readily interconvertible isomers called?

2. The shape of the electron cloud in an atom is related to which of the following?

3. Which of the following molecules has the highest dipole moment?

4. The inductive effect can be used to explain which of the following?

5. The decrease in electron density at one position accompanied by a corresponding increase at another position is known as:

6. What is the polarization of a bond caused by an adjacent polar bond through a sigma bond called?

7. An electrometer is also known as?

8. What is the formula mass of calcium carbonate (CaCO₃)?

9. What is the approximate weight of one mole of electrons?

10. Which chemical analysis method identifies all elements present in a compound?

11. What does the height of a peak in a mass spectrum indicate?

12. By how many times is a hemoglobin molecule heavier than a hydrogen atom?

13. Which term describes a substance composed solely of one type of atom?

14. In the context of CO and CO2 formation, which scientific principle is demonstrated by their compositions?

15. Which pair of gases contain an equal number of molecules?

16. Which option will contain the maximum number of water molecules?

17. Identify the species that is not paramagnetic.

18. What is the ratio of the volumes of H2, O2, and CH4 in a container with equal masses of each gas at 30 °C?

19. What is the equivalent mass of sulfur in SCl2 among the chlorides S2Cl2 and SCl2?

20. The formation of CO and CO2 illustrates which scientific law?