Johor Trial 2024 Chemistry Kertas 1 · Pontian

Chemistry

Johor Trial 2024 Chemistry Kertas 1 · Pontian

• Johor Trial Pontian
• 40 questions
• With explanations

1

Which of the following substances is an element?

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A Water B Neon C Ethanol D Naphthalene

T4 Chapter 2.1 Basic Concepts of Matter

2

Diagram 1 shows the apparatus set-up to determine the empirical formula of the oxide of metal Q. What is metal Q?

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A Sodium B Silver C Copper D Magnesium

T4 Chapter 3.3 Chemical Formula

3

The proton number of atom X is 17. What is the electron arrangement of atom X?

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A 2 B 2.8.1 C 2.8.7 D 2.8.8

T4 Chapter 2.3 Atomic Structure

4

Cyclohexane, $\text{C}_6\text{H}_{12}$ is an organic solvent. Which of the following are true about cyclohexane? I Can dissolve naphthalene II Can dissociate into ions in water III Has a high melting point and boiling point IV Cannot conduct electricity in any state

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A I and III B I and IV C II and III D II and IV

T4 Chapter 5.7 Properties of Ionic Compounds and Covalent Compounds

5

Diagram 2 shows the ionisation of a substance in water. Which of the following statements is correct about the substance?

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A The substance has a pH value more than 7. B The substance turns moist blue litmus paper red. C The presence of water enables the substance to produce hydroxide ions. D The substance reacts with a reactive metal to produce carbon dioxide and water.

T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties

6

Diagram 3 shows dry ammonia gas being passed into methylbenzene. No change is observed on the red litmus paper. What should be done in order to make the red litmus paper change colour?

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A Replace the red litmus paper with a blue litmus paper. B Shake the mixture in the test tube. C Replace methylbenzene with water. D Put a stopper on the test tube.

T4 Chapter 6.1 The Role of Water in Showing Acidic and Alkaline Properties

7

Diagram 4 shows a graph of volume of carbon dioxide gas released against time when marble chips react with hydrochloric acid. Which point shows the highest rate of reaction?

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A P B Q C R D S

T4 Chapter 7.1 Determining Rate of Reaction

8

Alloy Z has the following composition: | Iron | Chromium | Nickel | |---|---|---| | 74% | 18% | 8% | What is alloy Z?

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A Duralumin B Brass C Pewter D Stainless steel

T4 Chapter 8.1 Alloy and Its Importance

9

Which of the following statements is correct for 1 mole of substance?

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A 1 mole of lithium contains $6.02 \times 10^{23}$ molecules B 1 mole of hydrogen gas contains $6.02 \times 10^{23}$ atoms C 1 mole of water contains the same number of moles of atoms as in 12 g of carbon-12 D 1 mole of nitrogen dioxide contains the same number of molecules as the number of atoms in 12 g of carbon-12

T4 Chapter 3.2 Mole Concept

10

Diagram 5 shows the Periodic Table of Elements. Which element is a non-metal that exists as a gas at room temperature?

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A W B X C Y D Z

T4 Chapter 4.2 The Arrangement in the Periodic Table of Elements

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