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Perlis Trial 2022 Chemistry Kertas 1

1
Which of the following processes physical change from liquid to gas? I Boiling II Condensation III Evaporation IV Sublimation
2
Which of the following is the use of the isotope iodine-131?
3
Which of the following is the correct pair of compounds and its chemical formula?
4
Which of the following gasses is used in a weather balloon?
5
What type of chemical bond in water molecules?
6
Which statement is correct about the metallic bond?
7
Which of the following particles in solution of ammonia is responsible for its alkaline properties?
8
Which of the following is not a chemical property of acids?
9
Name the gas that turns lime water to cloudy?
10
Which of the following is not the unit for the rate of reaction?
11
Which of the following substances is the main component for glass?
12
The following equation shows the reaction between copper(II) oxide and hydrogen gas. CuO + H_2 -> Cu + H_2O What is the type of reaction that takes place for copper(II) oxide?
13
Which of the following is non hydrocarbon?
14
Which of the following is not an endothermic reaction?
15
Which of the following describes a monomer?
16
Which of the following are basic ingredients of cosmetics? I Moisturiser II Emulsifier III Stabiliser IV Bleaching agent
17
Which of the following substances is made up of one type of atom only?
18
Which of the following particles equals to 1 mole?
19
Diagram 1 shows the method used to store an element. Which of the following is the explanation of why this method was used?
20
In the Periodic Table of the Element, X element has 11 proton number, while Y element has 17 proton number. Which of the following is not true about element X and Y?
21
Which of the following molecules share three pairs of electrons between two atoms?
22
Which of the following substances dissolve in water to produce a solution with pH value more than 7?
23
The following equation represents a reaction between zinc metal and hydrochloric acid. Zn + 2HCl → ZnCl_2 + H_2 Determine maximum volume of hydrogen gas released when 50 cm^3 of 1.0 mol dm^-3 hydrochloric acid reacts with excess zinc at room condition. [1 mole of any gas occupies 24 dm^3 mol^-1 at room conditions]
24
Diagram 2 shows an experiment to produce salt P. What salt solution can be used to replace Ca(NO3)2 solution to produce salt that has the same solubility as salt P?
25
When 2 cm³ of copper(II) sulphate solution is added to the mixture of dilute sulfuric acid and zinc granules, the rate of reaction increases. Which statement best explains why the rate of reaction increases?
26
Diagram 3 shows the reaction between zinc and nitric acid. Which of the following is the measurable change in this reaction?
27
Diagram 4 shows a bridge for pedestrians. One company in China used steel to construct the bridge. Which of the following, is the arrangement of the atoms in steel?
28
Which of the following solutions should not be stored in a tin-plated container? I NaNO3 II KCI III AgNO3 IV CuSO4
29
The natural smell of a pineapple is due to the presence of an ester. Which of the following is the name of the ester?
30
The following equation represents the formation of magnesium sulphate, MgSO_4. Mg + H_2SO_4 → MgSO_4 + H_2 Heat released when 1 mol of MgSO_4 is 467kJ mol^-1. Which energy level diagram is correct for the reaction?
31
Which chemical reaction produces the highest heat of neutralisation?
32
Diagram 5 shows the polymerization reaction of substance p to formed substance q. p and q are similar in terms of
33
Diagram 6 showing structural formulae of a polymer. What is the relative molecular mass monomer of this polymer? [Relative atomic mass : H = 1; C = 12; Cl = 35.5]
34
The following shows the conversation between Raju and Farhan during camping near the seaside. Raju : Farhan, my clothes still have blood stains although they have been washed twice with this seawater. Farhan : Try washing them with my cleaning agent. Blood stains could be removed. Which of the following cleaning agents can be used by Raju?
35
Diagram 7 shows reactions of acid X. Salt Y could be
36
Table 1 shows the total volume of oxygen liberated at regular time intervals for the decomposition of hydrogen peroxide, H_2O_2 at room temperature catalysed by manganese(IV) oxide. | Time (min) | 0 | 1 | 2 | 3 | 4 | | Volume of gas (cm^3) | 0 | 9.2 | 17.6 | 25.7 | 33.6 | What is the average rate of reaction in the third minutes?
37
The following equation represents the oxidation of iron by steam. 3H_2O + 2Fe -> Fe_2O_3 + 3H_2 What is the maximum mass of iron(III) oxide produced when 50 g of steam reacts with 100 g of iron? [Relative atomic mass: H = 1; O = 16; Fe = 56]
38
110.0 g of propane, C3H8 gas undergoes complete combustion in excess oxygen. What is the volume of carbon dioxide gas produced at room condition? [Relative atomic mass : H = 1; C = 12; O = 16, Molar volume at room conditions = 24 dm³ mol⁻¹]
39
Diagram 8 shows an experiment to determine the heat of precipitation. Which of the following mixtures to obtain as the result shown?
40
Diagram 9 shows the structure of a polymer. What is this polymer and the polymerisation process that produces it?
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