Revision Form4 Chapter 9 Chemical Substances for Industrial
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  • Question 1
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    Q.

    Which substance is commonly used to manufacture dyes and detergents?

    answer choices

    Sulphuric acid

    Phosphoric acid

    Sodium chloride

    Ammonium chloride

  • Question 2
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    Q.

    Diagram shows the stages in Contact Process.

    Name the substances P and Q.

    answer choices

    P: Water ; Q:Concentrated sulphuric acid

    P: Concentrated sulphuric acid ; Q: Water

    P: Concentrated sulphuric acid ; Q: Vandadium (V) oxide

    P: vanadium (V) oxide ; Q: Vandadium (V) oxide

  • Question 3
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    Q.

    The manufacturing of sulphuric acid involves several reactions. Which of the following equations represents the sulphuric acid reaction that use a catalyst?

    answer choices
  • Question 4
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    Q.

    Which gas is the main agent of pollution which causes acidic rain?

    answer choices

    Ozone

    Methane

    Sulphur dioxide

    Carbon monoxide

  • Question 5
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    Q.

    Acid rain causes the land to be acidic. Farmers neutralize the acidity in the soil by adding................

    answer choices

    Lime

    Sulphur

    Zinc nitrate

    Ammonium sulphate

  • Question 6
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    Q.

    Which of the following is the main usage of the product in Haber Process?

    answer choices

    To produce pesticide

    To produce paint

    To produce detergent

    To produce fertilizers

  • Question 7
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    Q.

    The chemical equation shows the reaction which occurs in Haber Process.

    N2 + 3H2 --> NH3

    Which of the following represents catalyst, temperature and presure in the process?

    answer choices

    Temperature 200oC, pressure 60 atm, platinum as catalyst.

    Temperature 450oC, pressure 200 atm, iron as catalyst.

    Temperature 800oC, pressure 1 atm, nickel as catalyst.

    Temperature 450oC, pressure 1 atm, iron as catalyst.

  • Question 8
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    Q.

    Pure metals are ductile and malleable. this is because...........

    answer choices

    atoms can move freely

    layers of atoms can slide easily

    bonding between atoms are weak

    atoms are orderly and closely packed

  • Question 9
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    Q.

    Diagram below shows the atomic arrangement in an alloy.

    this alloy is harder than its pure metal because..........

    answer choices

    arrangement of atoms in alloy is more orderly

    vibration of atoms in alloy is more vigorous

    layers of atoms in alloy is less able to slide

    absence of empty spaces between atoms in alloy

  • Question 10
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    Q.

    diagram shows the arrangement of atoms in alloy X.

    What is the name of alloy X?

    answer choices

    Steel

    Brass

    Bronze

    Duralumin

  • Question 11
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    Q.

    The body of the car shown in diagram below is made of alloy W.

    What is alloy W?

    answer choices

    Steel

    Brass

    Bronze

    Duralumin

  • Question 12
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    Q.

    In order to produce a glass that more resistant to heat and chemicals, substance X is added to soda lime glass in the manufacturing process.

    What is X?

    answer choices

    Boron oxide

    Lead (II) oxide

    Sodium carbonate

    Calcium carbonate

  • Question 13
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    Q.

    which of the following substances is found in a photochromic glass?

    answer choices

    Glass and silver chloride

    Plastic and ceramic

    Plastic and sodium chloride

    Ceramic and silver chloride

  • Question 14
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    Q.

    kaolin is used to made porcelain. A substance is added to kaolin to harden it.

    What is the substance?

    answer choices

    Silicone

    Feldspar

    Sodium oxide

    Calcium carbonate

  • Question 15
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    Q.

    Which of the following describe the characteristics of ceramics?

    I Hard

    II Brittle

    III High melting point

    IV Good electrical insulator

    answer choices

    I and IV only

    II and III only

    I, II and IV only

    I, II, III and IV

  • Question 16
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    Q.

    Why is ceramic used for the wall of a nuclear reactor?

    answer choices

    ceramic is very hard

    ceramic is malleable

    ceramic is inert towards chemical

    ceramic can withstand high temperature

  • Question 17
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    Q.

    Which substance is a composite material?

    answer choices

    Alloy

    Glass

    Fibre glass

    Ceramic

  • Question 18
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    Q.

    Digital communication plays a very important role in modern living. Effective transmission of data, voice and images in a digital format requires a suitable material.

    What is the material?

    answer choices

    Copper

    Aluminium

    Fibre optic

    Superconductor

  • Question 19
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    Q.

    What is the main purpose of using superconductors?

    answer choices

    Devices made from superconductors are very cheap

    To minimize the electrical resistance

    To produce durable devices

    To prevent the devices from corrosion

  • Question 20
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    Q.

    Diagram shows the layout of water pipe system in a house.

    What are the best materials that can be used as pipes for the above purposes?

    answer choices

    Household water supply: Polypropene ; Waste water: Ceramics ; Rain water: Polyvinylchloride

    Household water supply: Lead ; Waste water: Copper ; Rain water: Polyvinylchloride

    Household water supply: Fibre glass ; Waste water: Steel ; Rain water: Perspex

    Household water supply: Polythene ; Waste water: Cast iron ; Rain water: Concrete

  • Question 21
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    Q.

    Polymer, glass, alloy and composite material are some examples of manufactured substance in industry.

    Which statement is correct about these substances?

    answer choices

    A polymer is alarge molecule formed by joining many monomers

    Soda lime glass is able to withstand very high temperature

    An alloy is a mixture of two or more non-metals in a fixed composition

    A composite material is a substance which has low melting point

  • Question 22
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    Q.

    Plaster of Paris which is used to make plaster casts for supporting broken bones is made up of ...................

    answer choices

    Calcium sulphate

    Calcium silicate

    Calcium phosphate

    Calcium carbonate

  • Question 23
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    Q.

    Diagram shows the lead crystal glass.

    What are the major components used in the making of lead crystal glass?

    answer choices

    Copper (II) oxide and lead (II) oxide

    Aluminium silicate and silicon dioxide

    Silicon dioxide and lead (II) oxide

    Iron (III) oxide and boron oxide

  • Question 24
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    Q.

    Ammonium sulphate is used as a chemical fertilizer. This fertilizer can be prepared in the laboratory through the reaction between ............

    answer choices

    aqueous ammonia solution and dilute sulphuric acid

    aqueous ammonia solution and dilute sulphur dioxide

    ammonia gas and sulphur and oxygen

    ammonia gas and sulphur trioxide

  • Question 25
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    Q.

    A student was dazzled by the sunlight while doing her revision as shown in diagram.

    She want to change the window glass to solve this problem. The new window glass should contain substance M.

    What is substance M?

    answer choices

    Lead (II) oxide

    Silver chloride

    Boron oxide

    Calcium carbonate

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