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WorksheetsChemistry Form 4 Chap 8
Total questions: 17
Worksheet time: 21mins
Which of the following is TRUE about an alloy?
An alloy is a pure metal which is weak and soft
An alloy is a compound consisting of metal and non-metal
an alloy is a long chain of molecules formed by monomers
an alloy is a mixture of two or more elements with a certain fixed composition in which the major component is a metal
What is the use of duralumin?
making a aircraft body frame
making of musical instruments
making of electrical instruments
making of surgical instruments
Which of the following are the compositions of pewter?
I. Aluminium
II. Tin
III. Antimony
IV. Copper
I, II, III
I, II, IV
II, III, IV
I, II, III, IV
Which of the following are the purpose of making alloys?
I. To prevent corrosion
II, To increase the strength and hardness
III. To improve the appearance
IV. To increase the density
I and II
II and IV
I, II and III
I, II, III and IV
What is the main component of glass?
Silicon
Silica
Kaolin
Sodium carbonate
Low Melting point (700ºC)
Cracks easily with sudden temperature changes
Easy to mould and shape
Which of the following types of glass shows the above properties
Fused silica glass
Soda-lime glass
Borosilicate glass
Lead crystal glass
Which of the following are correct pairs about the use of the types of glass?
I. Fused glass - telescope mirrors
II. Soda-lime glass - Window panes
III. Borosilicate - electrical bulb
IV. Lead crystal glass - laboratory glass ware
I and II
II and III
II and IV
III and IV
Which of the following is true about ceramic ?
ceramic has low melting point
ceramic is soft and weak
ceramic is inert to chemicals
Ceramic is poor insulator of electricity and heat
Which of the following are TRUE about composite material?
I. It is formed by combining two or more materials
II. It is created for specific purpose and use
III. It has properties that are superior of the original components
IV. Reinforced concrete, superconductor and photochromic glass are the examples of composite materials
I, II and III
I, II and IV
II, III and IV
I, II, III and IV
Which of the following composite materials match with its property?
reinforce concrete - soft and weak
superconductor - transparent and no reflect to light rays
photochromic glass - insulator of electricity
fibre glass - high density and nonflexible
Low material cost
Transmit data using light wave in telecommunications
Which of the following has properties above?
superconductor
photochromic glass
fibre optics
fibre glass
Why a boat which is made from fibre glass is better than steel?
heavier
good heat insulator
lower tensile strength
more soft and weak
Which of the following properties is not shared by glass and ceramics?
they are resistant to chemical attack
they are opaque
they are brittle
they have low tensile strength
Ceramics are used to make bone and dental implants because
they are hard an inert
they are thermal insulators
they have high tensile strength
they can be easily cleaned
Carbon fibre reinforced polymer (CFRP) is a composite material. It is used to make sports equipment such as racquets and golf clubs, sailboats and racing bicycles.
Which of the following are properties you would expect CFRP to possess?
I. It has high tensile strength
II. It is resistant to corrosion
III. It is light
IV. It is resistant to heat
I and III
II and IV
I, II and III
I, II, III and IV
Which of the following shows the arrangement of atoms in bronze?
which of the following mixture of elements which forms a suitable alloy to make coins
copper and nickel
zinc and copper
iron and carbon
copper and lead
