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