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WorksheetsChemistry Quiz
Total questions: 10
Worksheet time: 5mins
Which of the following gases can be collected by the downward displacement of air?
Hydrogen
Oxygen
Ammonia
Carbon dioxide
The periodic law states that the properties of elements are a periodic function of their:
Atomic size
Atomic number
Mass number
Electronegativity
What is the oxidation state of sulfur in H₂SO₄?
+2
+4
+6
-2
Which of the following is a property of transition metals?
They have low melting points
They form colored compounds
They are poor conductors of electricity
They do not exhibit variable oxidation states
Which of the following compounds will react with both acids and bases?
Sodium chloride
Calcium carbonate
Aluminum hydroxide
Copper(II) sulfate
Which of the following reactions represents neutralization?
NaOH + HCl → NaCl + H₂O
2H₂ + O₂ → 2H₂O
CaCO₃ → CaO + CO₂
Fe + S → FeS
Which method is suitable for separating a mixture of salt and sand?
Filtration
Sublimation
Chromatography
Distillation
The type of reaction in which an element displaces another from its compound is called:
Addition reaction
Decomposition reaction
Displacement reaction
Neutralization reaction
What is the percentage composition of oxygen in water (H₂O)?
33.3%
66.7%
88.9%
44.4%
Which of the following is a reducing agent?
KMnO₄
H₂SO₄
NaOH
CO
