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Grade 11 Exam  >  Grade 11 Tests  >  Chemistry for Grade 11 (IGCSE)  >  Test: Oxides & Preparation of Insoluble Salts - Grade 11 MCQ

Test: Oxides & Preparation of Insoluble Salts - Grade 11 MCQ


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10 Questions MCQ Test Chemistry for Grade 11 (IGCSE) - Test: Oxides & Preparation of Insoluble Salts

Test: Oxides & Preparation of Insoluble Salts for Grade 11 2024 is part of Chemistry for Grade 11 (IGCSE) preparation. The Test: Oxides & Preparation of Insoluble Salts questions and answers have been prepared according to the Grade 11 exam syllabus.The Test: Oxides & Preparation of Insoluble Salts MCQs are made for Grade 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Oxides & Preparation of Insoluble Salts below.
Solutions of Test: Oxides & Preparation of Insoluble Salts questions in English are available as part of our Chemistry for Grade 11 (IGCSE) for Grade 11 & Test: Oxides & Preparation of Insoluble Salts solutions in Hindi for Chemistry for Grade 11 (IGCSE) course. Download more important topics, notes, lectures and mock test series for Grade 11 Exam by signing up for free. Attempt Test: Oxides & Preparation of Insoluble Salts | 10 questions in 10 minutes | Mock test for Grade 11 preparation | Free important questions MCQ to study Chemistry for Grade 11 (IGCSE) for Grade 11 Exam | Download free PDF with solutions
Test: Oxides & Preparation of Insoluble Salts - Question 1
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What determines whether an oxide is categorized as acidic or basic?

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The acidity or basicity of an oxide is primarily determined by the nature of the element it is composed of. Metals tend to form basic oxides, while non-metals typically form acidic oxides. This distinction arises from the chemical properties of these elements and influences how the oxides interact with other substances. For example, basic oxides react with acids to produce salts and water, whereas acidic oxides interact with bases to form salts and water. Understanding this fundamental principle helps in classifying oxides based on their acid-base properties.
Test: Oxides & Preparation of Insoluble Salts - Question 2
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Which type of oxide would likely result in a basic solution when dissolved in water?

Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 2
Oxides formed by metals tend to result in basic solutions when dissolved in water. This is because basic oxides, which are typically formed by the reaction of metals with oxygen, have properties that lead to an increase in pH when they come into contact with water. The basic nature of these oxides allows them to react with acids to form salts and water, demonstrating their characteristic behavior in aqueous solutions.
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Test: Oxides & Preparation of Insoluble Salts - Question 3
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What happens when acidic oxides react with bases?

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When acidic oxides interact with bases, they undergo a neutralization reaction that results in the formation of salts and water. This process helps in balancing the acidic properties of the oxide by combining with the basic properties of the base. The reaction between an acidic oxide and a base is an essential chemical transformation that illustrates how substances with contrasting properties can interact to produce new compounds with different characteristics.
Test: Oxides & Preparation of Insoluble Salts - Question 4
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Which of the following is a common example of a basic oxide?
Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 4
Copper oxide (CuO) is a common example of a basic oxide. Basic oxides are typically formed by the combination of metals with oxygen, leading to the creation of compounds that exhibit basic properties when dissolved in water. When copper oxide interacts with acids, it produces salts and water, showcasing its characteristic behavior as a basic oxide. Understanding specific examples of basic oxides helps in recognizing the diverse range of chemical compounds that exist based on their composition and properties.
Test: Oxides & Preparation of Insoluble Salts - Question 5
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What is the defining characteristic of amphoteric oxides?
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Amphoteric oxides exhibit the unique property of being able to act as both acidic and basic substances depending on the reactants they encounter. This behavior allows them to form salts and water in reactions, showcasing their dual nature in chemical interactions.
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What theory provides insight into the dual behavior of amphoteric oxides?
Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 6
The Lewis acid-base theory offers valuable insight into the dual behavior of amphoteric oxides. Unlike theories focused solely on proton exchange, the Lewis theory delves into the electron-pair interactions that underpin the amphoteric nature of substances like aluminum oxide and zinc oxide.
Test: Oxides & Preparation of Insoluble Salts - Question 7
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In the reaction involving aluminum oxide acting as an acid, what are the products formed?
Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 7
When aluminum oxide behaves as an acid in the reaction with NaOH, the products formed are NaAlO2 and water (H2O). This exemplifies the amphoteric behavior of aluminum oxide, showcasing its ability to act as both an acid and a base depending on the reactants involved.
Test: Oxides & Preparation of Insoluble Salts - Question 8
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What is the primary purpose of filtering the mixture during the preparation of insoluble salts?
Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 8
Filtration is essential during the preparation of insoluble salts to separate the solid precipitate from the liquid solution. This process ensures that the insoluble salt is isolated, allowing for its collection and further purification.
Test: Oxides & Preparation of Insoluble Salts - Question 9
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In the preparation of lead(II) sulfate using lead(II) nitrate and potassium sulfate, what is the equation representing the precipitation reaction?
Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 9
The precipitation reaction between lead(II) nitrate and potassium sulfate to form lead(II) sulfate and potassium nitrate is represented by the equation: Pb(NO3)2(aq) + K2SO4(aq) → PbSO4(s) + 2KNO3(aq). This reaction results in the formation of the insoluble salt lead(II) sulfate as a solid precipitate.
Test: Oxides & Preparation of Insoluble Salts - Question 10
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Why is it important to wash the precipitate with distilled water during the preparation of insoluble salts?
Detailed Solution for Test: Oxides & Preparation of Insoluble Salts - Question 10
Washing the precipitate with distilled water is crucial as it helps remove impurities and any traces of the solution, ensuring that the insoluble salt obtained is pure. This washing step is essential for obtaining a high-quality product when preparing insoluble salts.
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