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Test: Properties & Uses of Metals & Alloys and their Properties - Grade 11 MCQ


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15 Questions MCQ Test Chemistry for Grade 11 (IGCSE) - Test: Properties & Uses of Metals & Alloys and their Properties

Test: Properties & Uses of Metals & Alloys and their Properties for Grade 11 2024 is part of Chemistry for Grade 11 (IGCSE) preparation. The Test: Properties & Uses of Metals & Alloys and their Properties questions and answers have been prepared according to the Grade 11 exam syllabus.The Test: Properties & Uses of Metals & Alloys and their Properties MCQs are made for Grade 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Properties & Uses of Metals & Alloys and their Properties below.
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Test: Properties & Uses of Metals & Alloys and their Properties - Question 1

What property of metals allows them to be hammered into different shapes and drawn into wires?

Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 1
Metals are malleable, which means they can be hammered into different shapes and drawn into wires without breaking. This property is a result of the metallic bonding present in metals, which allows their atoms to slide past each other when subjected to pressure. For example, metals like gold and silver are highly malleable and can be shaped into thin sheets or wires without breaking.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 2

Which type of elements tend to form negative ions through electron gain?

Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 2
Non-metals tend to form negative ions through electron gain, except for hydrogen. When non-metal atoms gain electrons, they achieve a stable electron configuration by filling their outermost energy levels. This process allows them to attain a more stable and lower energy state, leading to the formation of negative ions. For instance, elements like oxygen and chlorine commonly form negative ions in chemical reactions.
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Test: Properties & Uses of Metals & Alloys and their Properties - Question 3

What characteristic distinguishes non-metals from metals in terms of their ability to conduct heat and electricity?

Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 3
Non-metals are generally poor conductors of heat and electricity compared to metals. This is because non-metals lack the free-flowing electrons that are responsible for the efficient conduction of heat and electricity in metals. Due to their structure and bonding, non-metallic elements do not support the movement of electrons necessary for conducting heat and electricity effectively.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 4
Which property of metals is attributed to their tendency to form positive ions through the loss of electrons?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 4
Metals tend to form positive ions by losing electrons, a process that occurs when metal atoms react with other elements. This characteristic is related to the formation of basic oxides by metals. When metals undergo chemical reactions with oxygen, they produce oxides that exhibit basic properties. These basic oxides react with water to form solutions with a pH greater than 7, demonstrating the alkaline nature of the oxides produced by metallic elements.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 5
Which of the following statements accurately describes the reaction of calcium with water?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 5
When calcium (Ca) reacts with water, it forms calcium hydroxide (Ca(OH)2) in aqueous form along with the release of hydrogen gas (H2). This reaction is represented by the equation: Ca (s) + 2H2O (l) → Ca(OH)2 (aq) + H2 (g). This reaction illustrates the reactivity of calcium with water, showcasing a common behavior of certain metals when exposed to water.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 6
What happens when iron reacts with hydrochloric acid (HCl)?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 6
When iron (Fe) reacts with hydrochloric acid (HCl), it displaces hydrogen from the acid, leading to the formation of ferrous chloride (FeCl2) in aqueous form and hydrogen gas (H2). The balanced chemical equation for this reaction is: Fe (s) + 2HCl (aq) → FeCl2 (aq) + H2 (g). This reaction showcases the reactivity of iron with acids, demonstrating the displacement reaction characteristic of certain metals.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 7
Which statement accurately represents the reactivity of gold with oxygen?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 7
Gold is considered a noble metal due to its inert nature, which means it does not react with oxygen under normal conditions. Unlike many other metals, gold does not readily form oxides when exposed to oxygen. This unique property of gold's non-reactivity makes it highly valuable in various applications, including jewelry and electronics.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 8
When copper reacts with oxygen, what compound is formed?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 8
When copper (Cu) reacts with oxygen, it forms copper oxide (CuO) as the product. This reaction can be represented by the equation: 2Cu (s) + O2 (g) → 2CuO (s). Copper is capable of undergoing oxidation when exposed to oxygen, resulting in the formation of copper oxide, which may exhibit various colors depending on its oxidation state.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 9
Which alloy is known for its toughness and resistance to rust, making it suitable for the production of cutlery?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 9
Stainless steel, comprising iron along with elements like chromium, nickel, and carbon, is valued for its toughness and resistance to rust. These properties make it an ideal material for producing cutlery that requires both hardness and anti-corrosive properties.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 10
What specialized properties are iron alloys with tungsten renowned for?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 10
Iron alloys with tungsten are well-known for their extreme hardness and ability to withstand high temperatures. These specialized properties make them suitable for applications that require materials to maintain their structural integrity under challenging conditions.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 11
How do aluminium alloys enhance their properties while maintaining low density?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 11
Aluminium alloys enhance their properties while maintaining low density by blending aluminium with metals like copper, manganese, and silicon. This combination imparts strength and other desirable characteristics to the alloy, making it a versatile material for various industries such as aerospace and automotive.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 12
What property of alloys leads to an increase in hardness compared to pure metals?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 12
The distortion of atomic arrangements in alloys is a key factor contributing to their increased hardness compared to pure metals. This distortion hinders the smooth sliding of atomic layers over each other, making the material stronger and more resistant to deformation.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 13
Which element, when alloyed with iron, is renowned for extreme hardness and high-temperature resistance?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 13
Iron alloys with tungsten are well-known for their extreme hardness and ability to withstand high temperatures. This makes them ideal for applications requiring durability and heat resistance.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 14
What property makes chromium or nickel-containing alloys stand out in terms of their characteristics?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 14
Alloys incorporating chromium or nickel are recognized for their corrosion resistance properties. This makes them valuable in environments where protection against corrosion is essential, such as in marine or chemical processing industries.
Test: Properties & Uses of Metals & Alloys and their Properties - Question 15
How does the size variation of atoms in alloys impact their properties compared to pure metals?
Detailed Solution for Test: Properties & Uses of Metals & Alloys and their Properties - Question 15
The size difference among atoms in alloys results in a distortion of their atomic arrangements, which significantly affects their properties. This distortion plays a crucial role in increasing the hardness of alloys compared to pure metals by impeding the smooth sliding of atomic layers, thereby enhancing strength and resistance to deformation.
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