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- 1. Multiple Choice
Which of the following is correct about an electrolyte?
Dissolves in water
Exists as liquid at room temperature
Conducts electricity in solid state
Has lreely moving ions in aqueous state
- 2. Multiple Choice
Sulphuric acid, H,SO.,, is produced in industry through Contact Process.
What is the catalyst used in Contact Process?
Iron
Platinum
Vanadium(V) oxide
Manganese(lV) oxide
- 3. Multiple Choice
Which statement explains why alloy is harder than pure metal?
Atom of other metal reacts with atom of pure metal
Atom of other metal reduces atom of pure metal from sliding
Bonds between atom in alloy is stronger
Density of alloy is higher
- 4. Multiple Choice
Which substance neutralises a solution with the pH value of 4?
Distilled water
Sodium chloride
Sodium hydroxide
Dilute ethanoic acid
- 5. Multiple Choice
Which characteristic is similar for all elements in Group 17 of the Periodic Table?
Form coloured ions
High melting and boiling points
Exist as gas at room temperature
Dissolve in water to form acidic solution
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