- 1. Which of the following laboratory equipment is used for accurately measuring and transferring the needed volume of acid during a titration experiment?
A) flask
B) burette
C) pipette
D) test tube
- 2. Which of the following laboratory equipment is used for heating, sterilizing and performing combustion reactions?
A) Bunsen burner
B) hot plate
C) thermometer
D) ice bath
- 3. Which of these is the correct formula for Sodium trioxocarbonate (IV)?
A) Na2CO3
B) NaCO3
C) Na2CO2
D) Na(CO3)_2
- 4. Which of these is the correct formula for Iron (II) trioxonitrate (V)?
A) Fe2NO3
B) Fe(NO3)_2
C) FeNO3
D) Fe2(NO3)_3
- 5. Which of these is the correct formula for Iron (III) hydroxide?
A) Fe3OH
B) Fe3(OH)_2
C) Fe(OH)_3
D) FeOH
- 6. Which of these is the correct formula for Aluminium oxide?
A) Al2O3
B) Al3O2
C) AlO3
D) AlO
- 7. Which of these is the correct formula for Magnesium trioxonitrate (V)?
A) Mg(NO3)_2
B) Mg2NO3
C) MgNO3
D) Mg2(NO3)_3
- 8. Calculate the percentage by mass of Mg in Mg(OH)_2.
[Mg = 24, O = 16, H = 1]
A) 3.4%
B) 55.2%
C) 41.4%
D) 35.6%
- 9. Calculate the percentage by mass of O in Mg(OH)_2.
[Mg = 24, O = 16, H = 1]
A) 55.2%
B) 3.4%
C) 41.4%
D) 35.6%
- 10. Calculate the percentage by mass of H in Mg(OH)_2.
[Mg = 24, O = 16, H = 1]
A) 35.6%
B) 55.2%
C) 3.4%
D) 41.4%
- 11. Which of these represents the electronic configuration of Potassium?
A) 1s2 2s2 2p6 3s2 3p6 4s2
B) 1s2 2s2 2p6 3s2 3p6 4s1
C) 1s2 2s2 2p6 3s2 3p7
D) 1s2 2s2 2p6 3s2 3p4 4s3
- 12. Which of these represents the electronic configuration of Oxygen?
A) 1s2 2s2 2p5
B) 1s2 2s2 2p3
C) 1s2 2s2 2p4
D) 1s2 2s2 2p6
- 13. Which of these represents the electronic configuration of Copper?
A) 1s2 2s2 2p6 3s2 3p6 3d10 4s1
B) 1s2 2s2 2p6 3s2 3p6 4s2 3d9
C) 1s2 2s2 2p6 3s2 3p6 4s2 3d10
D) 1s2 2s2 2p6 3s2 3p6 3d10 4s2
- 14. "No two electrons in an atom can have the same values for all the four quantum numbers" is a statement of _____
A) Pauli Exclusion Principle
B) Aufbau Principle
C) Hund's Rule
- 15. "Electrons are distributed among the orbitals of the same subshell singly before pairing occurs" is a statement of _______
A) Hund's Rule
B) Aufbau Principle
C) Pauli Exclusion Principle
- 16. "Electrons occupy the lowest available energy levels" is a statement of ______
A) Hund's Rule
B) Aufbau Principle
C) Pauli Exclusion Principle
- 17. Which of the following orbitals is spherical in shape?
A) p
B) s
C) f
D) d
- 18. Which of the following orbitals is dumbbell in shape?
A) p
B) d
C) s
D) f
- 19. The d-orbital has _____ orbitals per energy level. Type your answer in figure only.
- 20. The f-orbital can hold up to ____ electrons. Type your answer in figures only.
- 21. The atomic symbol of Berylium is __
A) Ber
B) B
C) Be
D) Br
- 22. The atomic symbol of Calcium is ___
A) C
B) Cu
C) Ca
D) Cl
- 23. The atomic symbol of Sodium is ___
A) S
B) Si
C) Na
D) Sd
- 24. The maximum number of electrons in a shell is represented by ____
A) 2nx2
B) 2n
C) 2n2
D) 22n
- 25. a represents ________
A) freezing
B) melting
C) condensation
D) sublimation
A) freezing
B) melting
C) condensation
D) sublimation
A) freezing
B) sublimation
C) evaporation
D) condensation
A) freezing
B) evaporation
C) melting
D) condensation
- 29. How many moles are there in 40g of NaCl?
[NaCl = 58.5]
A) 0.54 mole
B) 0.68 mole
C) 0.42 mole
D) 0.76 mole
- 30. Calculate the relative atomic mass of an element X with the relative abundance shown above.
A) 40.35
B) 39.74
C) 78.27
D) 64.36
- 31. The correct formula of Sodium oxide is ___
A) Na3O
B) NaO
C) NaO2
D) Na2O
- 32. The correct formula for Iron (II) trioxocarbonate (IV) is _____
A) Fe3CO3
B) FeCO3
C) Fe2(CO3)
D) Fe(CO3)2
- 33. The correct formula for Copper (II) tetraoxosulphate (VI) is ________
A) CuSO4
B) Cu2(SO4)_2
C) Cu(SO4)_2
D) Cu2SO4
- 34. The correct formula for Ammonium chloride is ____
A) NH3Cl
B) NH4Cl2
C) NH4Cl
D) NH3Cl2
- 35. The correct formula for Ammonium trioxocarbonate (IV) is ____
A) NH4CO3
B) (NH4)_2CO3
C) (NH4)_3CO3
D) NH4(CO3)_2
- 36. Which of the following laboratory apparatuses is not a glassware?
A) beaker
B) pipette
C) burette
D) Bunsen burner
- 37. Which of the following laboratory apparatuses is not a measuring apparatus?
A) graduated cylinder
B) balance
C) volumetric flask
D) petri dish
- 38. Which of the following laboratory apparatuses is not a safety equipment?
A) Bunsen burner
B) Goggles
C) Fire extinguisher
D) Gloves
- 39. Calculate the relative molecular mass of Calcium trioxocarbonate (IV), CaCO3
[Ca = 40, C = 12, O =16]
A) 98
B) 112
C) 100
D) 68
- 40. Calculate the relative molecular mass of Sodium tetraoxosulphate (VI), Na2SO4
[Na = 23, S = 32, O = 16]
A) 102
B) 156
C) 136
D) 142
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