Perlis Trial 2026 Chemistry Kertas 1 · Set 1

Chemistry

Perlis Trial 2026 Chemistry Kertas 1 · Set 1

• Perlis Trial Set 1
• 40 questions
• With explanations

1

Temperature is one of the factors that affect the rate of reaction. What is the effect of increasing temperature on the rate of reaction?

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A The total surface area of the reactant increases B The kinetic energy of the reactant particles increases C The number of particles per unit volume increases

T4 Chapter 7.4 Collision Theory

2

The diagram 1 below shows a diver diving on the seabed of the ocean. Gas X, which is a gas from Group 18, is mixed with oxygen gas in the gas tank used by the diver. State the name of gas X

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A Helium B Argon C Neon D Krypton

T4 Chapter 4.3 Elements in Group 18

3

Which of the following is an additive substance in borosilicate glass that makes the glass resistant to thermal shock?

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A Silver chloride B Boron oxide C Copper(I) chloride D Silicone(IV) dioxide

T4 Chapter 8.2 Composition of Glass and Its Uses

4

Which of the following is a type of food additive for ascorbic acid?

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A Preservative B Stabilisers C Emulsifiers D Antioxidants

T5 Chapter 5.3 Food Additives

5

Diagram 2 shows a model of an atom. Which of the following scientists introduced this model?

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A Ernest Rutherford B John Dalton C J. J. Thomson D Niels Bohr

T4 Chapter 2.2 The Development of the Atomic Model

6

What is the theory that is explained by Dmitri Mendeleev to classify chemical elements?

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A The group consisting of three elements was named triad. B Classified light, heat and a few compounds into the groups as elements. C Arrange the elements according to the increasing atomic masses. D Proposed that each element ought to have its own proton number.

T4 Chapter 4.1 The Development of the Periodic Table of Elements

7

Alcohol is an example of a carbon compound. State the functional group of alcohol.

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A Carboxyl B Double bond between carbon atoms C A single covalent bond between carbon atoms D Hydroxyl

T5 Chapter 2.2 Homologous Series

8

Which of the following is the molecular formula for urea?

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A C₁₀H₈ B Ca(NO₃)₂ C CO(NH₂)₂ D NH₄NO₃

T4 Chapter 3.3 Chemical Formula

9

What is a dative bond?

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A The electrostatic force of attraction between two opposite charged ions B The electrostatic force of attraction between a sea of delocalised electrons and positive metal ion C The interaction or force of attraction between hydrogen atom and a high electronegativity atom D A type of covalent bond between two atoms where both electrons are originated from only one atom

T4 Chapter 5.5 Dative Bond

10

Which of the following has the lowest rate of reaction?

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A Precipitation B Neutralisation C Rusting D Combustion

T4 Chapter 7.1 Determining Rate of Reaction

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