Acids, Bases and Salts (CBSE Class-10 Science): Questions 27 - 38 of 43

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Question number: 27

» 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: 28

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

One Liner Question▾

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Name the acid produced by our stomach.

Question number: 29

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

One Liner Question▾

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What is mechanism of indication of acid and base indicators?

Question number: 30

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

Short Answer Question▾

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In one of the industrial process used for manufacture of sodium hydroxide, a gas A is formed as by product of the reaction. The gas A reacts with lime water to give a compound B which is used as a bleaching agent in chemical industry. Identify A and B giving the chemical equation of the reaction.

Question number: 31

» Acids, Bases and Salts » Common Characteristics of Acids and Bases » Acid or a Base in a Water Solution

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How does acid and base conducts electricity when dissolved in water?

Question number: 32

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

Essay Question▾

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What are the basis to classify acids into several categories?

Explanation

1. On the basis of their strength, acids are classified as:

Strong acids: Acids which completely dissociate into its ions in aqueous solutions. Example: nitric acid (HNO3) , sulphuric acid (H2SO4), hydrochloric acid (HCl).

Weak acids: Weak acids are those acids which… (180 more words) …

Question number: 33

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

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What is the normal pH of human blood?

Question number: 34

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

One Liner Question▾

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What is a neutralization reaction?

Question number: 35

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

Short Answer Question▾

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Classify acids on the basis of their origin?

Question number: 36

» Acids, Bases and Salts » Common Characteristics of Acids and Bases » Acid or a Base in a Water Solution

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While diluting the acid, why is it recommended that acids should be added to water and not water to acid?

Question number: 37

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

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Why curd or sour substance should not be kept in brass or copper container?

Question number: 38

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

Short Answer Question▾

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Write a note on pH scale.

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