CBSE Class-10 Science: Questions 64 - 77 of 117

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Question number: 64

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » pH in Our Digestive System and Cause of Tooth Decay

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What is the cause of pain and irritation in stomach in case of indigestion?

Question number: 65

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

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Write a note on decomposition reactions?

Question number: 66

» Acids, Bases and Salts » Chemical Properties of Acids and Bases » How Do Acids and Bases React With Each Other?

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What is neutralisation reaction?

Question number: 67

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » pH in Our Digestive System and Cause of Tooth Decay

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Write a note on tooth decay and its prevention.

Question number: 68

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » Importance of pH in Everyday Life

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Why are same perishable food preserved in vinegar?

Question number: 69

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » Importance of pH in Everyday Life

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What do we understand by the term Hyper-acidity in human beings? What is the treatment for it?

Question number: 70

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

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What is thermal decomposition reaction?

Question number: 71

» 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: 72

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » Importance of pH in Everyday Life

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What is the pH range of human body?

Question number: 73

» Acids, Bases and Salts » How Strong Are Acid or Base Solutions? » pH Scale

Essay Question▾

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Write a detailed note on indicators and pH scale.

Explanation

A scale for measuring hydrogen ion concentration in a solution, called pH scale has been developed. The p in pH stands for ‘potenz’ in German, meaning power. So P = power and H = hydrogen ions.

Indicators – Indicators are substances which indicate the acidic or basic nature of the… (205 more words) …

Question number: 74

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

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What is the composition of Rust?

Question number: 75

» Acids, Bases and Salts » Chemical Properties of Acids and Bases » Acids and Bases in the Laboratory

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Name the acid produced by our stomach.

Question number: 76

» 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: 77

» 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?

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