Chemical Reactions and Equation (CBSE (Central Board of Secondary Education- Board Exam) Class-10 Science): Questions 40 - 51 of 74

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Question number: 40

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

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Give two examples of thermal decomposition reaction?

Question number: 41

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

Essay Question▾

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Describe the process of electrolysis of water with the help of a well labelled diagram?

Explanation

Electrolysis of water: It is the decomposition of water into Hydrogen and Oxygen gas, when an electric current is passed through water.

Electrolysis of water

Electrolysis of Water

Process of electrolysis of water

Question number: 42

» Chemical Reactions and Equation » Types of Chemical Reactions » Oxidation and Reduction

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Write down the chemical reactions for rust formation?

Question number: 43

» Chemical Reactions and Equation » Chemical Equations » Writing a Chemical Equation

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With the following materials (a) marble chips (b) dilute hydrochloric acid (c) Zinc granules, name the type of reaction which will occur, when marble chips and Zinc granules are added one by one to acid taken in two separate test tubes?

Question number: 44

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

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Write a note on decomposition reactions?

Question number: 45

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

One Liner Question▾

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What is thermal decomposition reaction?

Question number: 46

» Chemical Reactions and Equation » Chemical Equations » Balanced Chemical Equations

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Write chemical equation for burning of magnesium ribbon in air?

Question number: 47

» Chemical Reactions and Equation » Types of Chemical Reactions » Oxidation and Reduction

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What is the composition of Rust?

Question number: 48

» Chemical Reactions and Equation » Types of Chemical Reactions » Oxidation and Reduction

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Q22. Which of the two is a redox reaction?

a) Double displacement

b) Displacement

Question number: 49

» Chemical Reactions and Equation » Types of Chemical Reactions » Displacement Reaction

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When a more reactive metal displaces a less reactive metal in solution, Then the reaction is known as?

Question number: 50

» Chemical Reactions and Equation » Oxidation Reactions » Corrosion

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What are the requirements for corrosion to occur?

Question number: 51

» Chemical Reactions and Equation » Types of Chemical Reactions » Decomposition Reaction

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Blue crystals of copper sulphate on heating in a dry test tube become colourless. Give reasons.

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