Johor Trial 2026 Chemistry Kertas 1

Chemistry

Johor Trial 2026 Chemistry Kertas 1

• Johor Trial
• 40 questions
• With explanations

1

Which of the following careers is in the field of Chemistry?

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A Pharmacist B Astronaut C Accountant D Chef

T4 Chapter 1.1 Development in Chemistry Field and Its Importance in Daily Life

2

Diagram 1 below shows the structure of an atom. What are the subatomic particles in the nucleus?

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A Only neutron B Neutron and proton C Electron and proton D Electron and neutron

T4 Chapter 2.2 The Development of the Atomic Model

3

What is meant by chemical formula?

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A Number of particles in a compound. B Element symbols in the Periodic Table of Elements. C The representation of a compound uses letters to represent elements and subscript numbers to represent the number of atoms. D Chemical formula that shows the actual number of atoms of each element present in one molecule of an element or compound.

T4 Chapter 3.3 Chemical Formula

4

Element T and xenon are located in the same group as in the Periodic Table of Elements. Which of the following are the characteristics of element T? I Consists of monoatomic particle II Liquid at room temperature III Conduct electricity IV Chemically inert

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

T4 Chapter 4.3 Elements in Group 18

5

Diagram 2 shows the formation of a type of bond. Which of the following statements is correct about the bond?

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A The forces of attraction between hydrogen atoms that have bonded with an atom of high electronegativity in another molecule B Sharing of electrons between non-metal atoms that come from one atom only C The electrostatic forces between the sea of electrons and the positively charged metal ions D Transfer of electrons between metal atoms and non-metal atoms

T4 Chapter 5.5 Dative Bond

6

Diagram 3 shows the ionisation of a substance in water. Which of the following statements about the substance is correct?

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A The substance has a pH value more than 7 B The substance turns the colour of a moist blue litmus paper to red C The presence of water enables the substance to produce hydroxide ion 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

7

Diagram 4 shows an apparatus set-up of an experiment that has been carried out by Ahmad. What is the most suitable change that can be measured by Ahmad to determine the rate of reaction in the experiment?

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A Change in colour of the mixture B Formation of lead(II) chloride C Increase of the volume of sodium nitrate solution D Decrease of the concentration of sodium chloride solution

T4 Chapter 7.1 Determining Rate of Reaction

8

Stainless steel is stronger than pure iron. What is the use of stainless steel?

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A To make surgicals instrument B To make an aeroplane frame C To make a car frame D To make the trophy

T4 Chapter 8.1 Alloy and Its Importance

9

Which of the following is true about reduction reaction?

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A Increase in oxidation number B Gain of oxygen C Gain of hydrogen D Loss of electron

T5 Chapter 1.1 Oxidation and Reduction

10

Diagram 5 shows the structural formula of an organic compound. What is general formula of the organic compound?

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A CₙH₂ₙ B CₙH₂ₙ₋₁ C CₙH₂ₙ₊₂

T5 Chapter 2.2 Homologous Series

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