- 1. What type of reaction does the following equation represent? H3O+ OH- --> 2H2O
A) reduction
B) hydrolysis
C) oxidation
D) neutralisation
- 2. The oxidation number of Y the formula above is ____
A) +6
B) -7
C) +7
D) -6
- 3. Which statement best describes the process of reduction?
A) addition of hydrogen
B) removal of electrons
C) addition of oxygen
D) increase in oxidation number
- 4. The oxidation number of Z the formula above is ____
A) +4
B) -4
C) +2
D) -2
- 5. What is the oxidation number of Manganese in KMnO4?
A) -7
B) +6
C) +7
D) -6
- 6. Name this compound. KMnO4
A) Potassium hexaoxomanganate (IV)
B) Potassium hexaoxomanganate (VI)
C) Potassium tetraoxomanganate (V)
D) Potassium tetraoxomanganate (VII)
- 7. What is the oxidation number of Chromium in K2Cr2O7?
A) +6
B) -6
C) -7
D) +7
- 8. What is the oxidation number of S in SO4-2?
A) -8
B) -6
C) +6
D) +8
- 9. Which of the following is not a transition metal?
A) Ag
B) Fe
C) Cu
D) Na
- 10. Which of the following is not an alkali metal?
A) Na
B) K
C) Mg
D) Li
- 11. What is the chemical formula of Sodium chloride?
A) NaCl
B) SCl2
C) Na2Cl
D) SCl
- 12. Which of the following indicates oxidation?
A) Addition of hydrogen
B) Addition of electrons
C) Removal of electrons
D) Removal of Oxygen
- 13. Which of the following does not indicate reduction?
A) Removal of electrons
B) Addition of electrons
C) Addition of hydrogen
D) Removal of Oxygen
- 14. What does x represent?
A) +5
B) +3
C) -1
D) -3
- 15. What type of reaction is represented here? AB +CD --> AD + CB
A) Thermal dissociation
B) Catalytic
C) Displacement
D) Double decomposition
- 16. What is the name of this compound? HNO3
A) Trioxonitrate (IV) acid
B) Trioxonitrate (III) acid
C) Trioxonitrate (V) acid
D) Trioxonitrate (VI) acid
- 17. Neutralization is the reaction between ________ and ___________
A) an acid and a base
B) an acid and a salt
C) a base and a salt
D) a salt and water
- 18. Ammonium Chloride is written as __________
A) NH4Cl
B) (NH4)_2Cl
C) NH4Cl2
D) (NH4)_2Cl2
- 19. Which element has the atomic number 7?
A) Carbon
B) Oxygen
C) Nitrogen
D) Fluorine
- 20. Which of the following is the correct way to write Aluminium trioxocarbonate (IV)?
A) Al(CO3)_3
B) Al3(CO3)_2
C) Al2(CO3)_3
D) Al(CO3)
- 21. At constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin. This is the statement of _________
A) Gay-Lusaac's Law
B) Boyle's Law
C) Avogadro's Law
D) Charles' Law
- 22. What are amphoteric oxides?
A) Metallic oxides that exhibit both acidic and basic properties
B) Metallic oxides that exhibit both physical and chemical properties
C) Non-metallic oxides that exhibit both physical and chemical properties
D) Non-metallic oxides that exhibit both acidic and basic properties
- 23. Which of the following is the correct way to write Potassium trioxonitrate (V)?
A) KNO3
B) K2(NO3)_3
C) K(NO3)_2
D) K2NO3
- 24. Which of the following is not an alkaline earth metal?
A) Ca
B) Be
C) Na
D) Mg
- 25. Which of the following is oxidation?
A) a
B) c
C) d
D) b
- 26. Which of the following is reduction?
A) b
B) c
C) d
D) a
- 27. The reaction shown here is an example of ____________
A) Displacement
B) Thermal dissociation
C) Combination
D) Decomposition
- 28. The reaction shown here is an example of ____________
A) Decomposition
B) Combination
C) Displacement
D) Catalytic
- 29. The chemical symbol of Sodium is ___
- 30. The chemical symbol of Potassium is ___
- 31. The chemical symbol of Magnesium is ___
- 32. The chemical symbol of Nitrogen is ___
- 33. The chemical symbol of Copper is ___
- 34. The chemical symbol of Manganese is ___
- 35. The chemical symbol of Iron is ___
- 36. The existence in the same physical state of two or more structural forms of the same element is known as ____
A) hybridization
B) allotropy
C) eclipse
D) isotopy
- 37. Which groups are known as halogens?
A) group 5
B) group 9
C) group 7
D) group 8
- 38. Calculate the molar mass of Potassium chloride (k=39, Cl=35.5)
A) 58.5gmol-1
B) 47gmol-1
C) 74gmol-1
D) 74.5gmol-1
- 39. _____is a process of preventing iron from rusting by protecting it with other metals like copper, tin, gold and silver
A) Greasing
B) Painting
C) Oiling
D) Electroplating
- 40. The symbol of silver is written as
A) Ag
B) Au
C) Si
D) Al
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