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