Pahang Trial 2025 Chemistry Kertas 1 · Set 1

Chemistry

Pahang Trial 2025 Chemistry Kertas 1 · Set 1

• Pahang Trial Set 1
• 40 questions
• With explanations

1

Where should heavy metals and toxic substances be stored?

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A Dark bottle B Paraffin oil C Locked room D Shady area

T4 Chapter 1.3 Usage, Management and Handling of Apparatus and Materials

2

Which of the following substances exists as molecules?

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A Argon B Ammonia C Silver D Ammonium ion

T4 Chapter 2.1 Basic Concepts of Matter

3

Why does helium gas not react with other elements?

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A Has a stable octet electron arrangement B Has a stable duplet electron arrangement C The outermost electron shell has the maximum number of electrons

T4 Chapter 4.3 Elements in Group 18

4

Zinc chloride is an ionic compound. Which substance can dissolve zinc chloride?

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A Water B Ethanol C Hexane D Methylbenzene

T4 Chapter 5.7 Properties of Ionic Compounds and Covalent Compounds

5

Which of the following is true about the properties of a strong alkali?

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A Tastes sour B Ionises partially in water C Has a high concentration of hydrogen ions D Shows a yellow colour in methyl orange

T4 Chapter 6.3 Strength of Acids and Alkalis

6

Which of the following will produce an insoluble salt?

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A Sulphuric acid and zinc B Nitric acid and sodium hydroxide C Sodium sulphate and barium nitrate D Sodium chloride and copper(II) oxide

T4 Chapter 6.9 Preparation of Salts

7

What is the meaning of the rate of reaction for the reaction between magnesium ribbon and 50 cm³ of 1.0 mol dm⁻³ hydrochloric acid?

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A Increase in the mass of the magnesium ribbon per unit time B Increase in the concentration of hydrochloric acid per unit time C Increase in the volume of hydrogen gas per unit time D Decrease in the volume of hydrochloric acid per unit time

T4 Chapter 7.1 Determining Rate of Reaction

8

Qaseh's glasses look dark when they are in a hot, bright place. What substance is added to make the glass lenses?

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A Lead(II) chloride B Copper(I) chloride C Copper(II) carbonate D Silver chloride

T4 Chapter 8.4 Composite Materials and Its Importance

9

What is the process of producing alcohol from ethene in the presence of phosphoric acid as a catalyst at 300 °C and 60 atm?

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A Dehydration B Hydration C Oxidation D Esterification

T5 Chapter 2.3 Chemical Properties and Interconversion of Compounds Between Homologous Series

10

Which of the following metals slow down the rusting of iron? I Silver II Zinc III Lead IV Magnesium

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

T5 Chapter 1.6 Rusting

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