Acids, Bases and Salts (CBSE (Central Board of Secondary Education- Board Exam) Class-10 Science): Questions 1 - 15 of 43

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Question number: 1

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

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Give reason, acids conduct electricity only in presence of water.

Question number: 2

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

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Write a note on classification of bases.

Explanation

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

Strong bases: Strong bases are those bases which completely dissociate into its ions in aqueous solutions. Example: sodium hydroxide (NaOH), potassium hydroxide (KOH). Weak bases: Weak bases are those bases which do not completely dissociate into… (66 more words) …

Question number: 3

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

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With the help of a well labelled diagram, show the process of reaction of acids with metals.

Question number: 4

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

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Define dilution.

Question number: 5

» Acids, Bases and Salts » Salts » Family of Salts

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Name the salts of sulphuric acid.

Question number: 6

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

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Write down the chemical properties of bases?

Explanation

Chemical properties of Bases:

i) Reaction with Metals - Certain reactive metals such as Zinc, Aluminium, and Tin react with alkali solutions on heating and hydrogen gas is evolved.

2NaOH + Zn – > Na + 2 ZnO2 +H2

ii) Reaction with acids -Bases react with acids to… (66 more words) …

Question number: 7

» Acids, Bases and Salts » Common Characteristics of Acids and Bases » Alkali

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With the help of a well labelled diagram, Explain the chlor-alkali process?

Question number: 8

» Acids, Bases and Salts » Common Characteristics of Acids and Bases » Alkali

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What is alkali?

Question number: 9

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

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Why acids do not show acidic behaviour in absence of water?

Question number: 10

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

Essay Question▾

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Write down the chemical properties of acids?

Explanation

Chemical properties of acids:

i) Acids react with active metals to give hydrogen gas. Zn + H2SO4 – > ZnSO4 + H2

ii) Acids react with metal carbonate and metal hydrogen carbonate to give carbon dioxide. NaHCO3 +HCl – > NaCl + H2… (63 more words) …

Question number: 11

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

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Give an account of neutralisation reaction.

Question number: 12

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

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What is the importance of pH in day to day life?

Question number: 13

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

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Dry hydrogen chloride gas does not change the colour of blue litmus paper, whereas hydrochloric acid does. Why?

Question number: 14

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

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What is acid rain?

Question number: 15

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

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What are the properties of acids?

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