From the list of oxides given, choose the oxide s that fit the description stated. Each oxide can be used once, more than once or not at all. Sulphur Dioxide Magnesium Oxide Lithium Oxide Aluminium (III) oxide Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen monoxide Lead (II) oxide Reacts with both acids and alkalies.

The oxides which react both acid and base are called amphoteric oxides. Aluminium(III) oxide and lead(II) oxide are amphoteric in nature; they react both with acid and alkalies and form salt and water.

From the list of oxides given, choose the oxide s that fit the description stated. Each oxide can be used once, more than once or not at all. Sulphur Dioxide Magnesium Oxide Lithium Oxide Aluminium (III) oxide Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen monoxide Lead (II) oxide Does not react with either acids or alkalis.

The oxides which are neutral in nature do not react with acid or base. Carbon monoxide and nitrogen monoxide are neutral in nature thus do not react with acid or base.

From the list of oxides given, choose the oxide s that fit the description stated. Each oxide can be used once, more than once or not at all. Sulphur Dioxide Magnesium Oxide Lithium Oxide Aluminium (III) oxide Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen monoxide Lead (II) oxide Reacts with a base to form salt and water, but does not react with any acids.

The oxides which are acidic in nature do not react with acid. When acidic oxides react with base, forms salt and water, when acidic oxides react with water, they form acid as a product. Carbon dioxide, sulphur dioxide and nitrogen dioxide are acidic in nature; thus they react with base and water but not with acid.

From the list of oxides given, choose the oxide s that fit the description stated. Each oxide can be used once, more than once or not at all. Sulphur Dioxide Magnesium Oxide Lithium Oxide Aluminium (III) oxide Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen monoxide Lead (II) oxide Turns litmus paper red when added to water.

The oxides which are acidic in nature turns litmus paper red. Carbon dioxide, sulphur dioxide and nitrogen dioxide are acidic oxides which turn the colour of litmus to red.

From the list of oxides given, choose the oxide s that fit the description stated. Each oxide can be used once, more than once or not at all. Sulphur Dioxide Magnesium Oxide Lithium Oxide Aluminium (III) oxide Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen monoxide Lead (II) oxide Dissolves in water to form an alkaline solution.

The oxides which are basic in nature form an alkaline solution. Magnesium oxide is basic in nature and dissolves in water to form an alkaline solution.

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IMPORTANT

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An aqueous solution of sodium carbonate is basic and not acidic. Give the reason.

Important Questions on Acids, Bases and Salts

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IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 31

From the list of oxides given, choose the oxide $(s)$ that fit the description stated. Each oxide can be used once, more than once or not at all.

Sulphur Dioxide	Magnesium Oxide	Lithium Oxide
Aluminium (III) oxide	Carbon dioxide	Carbon monoxide
Nitrogen dioxide	Nitrogen monoxide	Lead (II) oxide

Reacts with both acids and alkalies.

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10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 31

From the list of oxides given, choose the oxide

(s)

that fit the description stated. Each oxide can be used once, more than once or not at all.

Sulphur Dioxide	Magnesium Oxide	Lithium Oxide
Aluminium (III) oxide	Carbon dioxide	Carbon monoxide
Nitrogen dioxide	Nitrogen monoxide	Lead (II) oxide

Does not react with either acids or alkalis.

EASY

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 31

From the list of oxides given, choose the oxide $(s)$ that fit the description stated. Each oxide can be used once, more than once or not at all.

Sulphur Dioxide	Magnesium Oxide	Lithium Oxide
Aluminium (III) oxide	Carbon dioxide	Carbon monoxide
Nitrogen dioxide	Nitrogen monoxide	Lead (II) oxide

Reacts with a base to form salt and water, but does not react with any acids.

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10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 31

From the list of oxides given, choose the oxide $(s)$ that fit the description stated. Each oxide can be used once, more than once or not at all.

Sulphur Dioxide	Magnesium Oxide	Lithium Oxide
Aluminium (III) oxide	Carbon dioxide	Carbon monoxide
Nitrogen dioxide	Nitrogen monoxide	Lead (II) oxide

Turns litmus paper red when added to water.

EASY

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 31

From the list of oxides given, choose the oxide $(s)$ that fit the description stated. Each oxide can be used once, more than once or not at all.

Sulphur Dioxide	Magnesium Oxide	Lithium Oxide
Aluminium (III) oxide	Carbon dioxide	Carbon monoxide
Nitrogen dioxide	Nitrogen monoxide	Lead (II) oxide

Dissolves in water to form an alkaline solution.

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 32

Classify the following indicators as natural, synthetic or universal: methyl orange, litmus, turmeric, phenolphthalein, $pH$ scale.

Note: The question given in the textbook seems to be wrong, the corrected question is

Classify the following indicators as natural, synthetic or universal: methyl orange, litmus, turmeric, phenolphthalein, $p H$ paper.

MEDIUM

10th ICSE

IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 32

Define

p H

. Write the value of

pH

in the term of

H^{+}

ion concentration.

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IMPORTANT

All in One - ICSE Chemistry>Chapter 3 - Acids, Bases and Salts>CHAPTER EXERCISE>Q 33

Name the method used for the preparation of the following salt from the list given below.

Sodium nitrate

List
(A) Simple displacement
(B) Neutralisation
(C) Decomposition by acid
(D) Double decomposition
(E) Direct synthesis

An aqueous solution of sodium carbonate is basic and not acidic. Give the reason.

Important Questions on Acids, Bases and Salts

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