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# Selina solutions for Concise Chemistry Class 10 ICSE chapter 4 - Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide [Latest edition]

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## Chapter 4: Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide

Intext QuestionsExercise - 4

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 4 Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium HydroxideExercise Intext Questions [Page 66]

Intext Questions | Q 1.1 | Page 66

What do you understand by the following:

Analysis

Intext Questions | Q 1.2 | Page 66

What do you understand by the following:

Qualitative analysis

Intext Questions | Q 1.3 | Page 66

What do you understand by the following:

Reagent

Intext Questions | Q 1.4 | Page 66

What do you understand by the following :

Precipitation

Intext Questions | Q 2.1 | Page 66

Write the probable colour of the following salts :

Iron (III) chloride

Intext Questions | Q 2.2 | Page 66

Write the probable colour of the following salts:

Potassium nitrate

Intext Questions | Q 2.3 | Page 66

Write the probable colour of the following salts :

Ferrous sulphate

Intext Questions | Q 2.4 | Page 66

Write the probable colour of the following salts:

Aluminium acetate

Intext Questions | Q 3.1 | Page 66

Name the probable cation present based on the following observation :

White precipitate insoluble in NH4OH but soluble in NaOH

Intext Questions | Q 3.2 | Page 66

Name the probable cations present based on the following observations :

blue coloured solution

Intext Questions | Q 4 | Page 66

Name the metal hydroxides which are :
(a) Insoluble (b) Soluble in
(i) Caustic soda solution (ii) Ammonium hydroxide solution.

Intext Questions | Q 5 | Page 66

What do you observe when ammonium salt is heated with caustic soda solution? Write the Word equation.

Intext Questions | Q 6 | Page 66

How will you distinguish NH4OH solution from NaOH solution ?

Intext Questions | Q 7 | Page 66

Why the alkali is added drop by drop to the salt solution?

Intext Questions | Q 8.1 | Page 66

Write balanced equation :

Reaction of sodium hydroxide solution with iron (III) chloride solution.

Intext Questions | Q 8.2 | Page 66

Write balanced equation :

Copper sulphate solution with ammonium hydroxide solution.

#### Selina solutions for Concise Chemistry Class 10 ICSE Chapter 4 Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium HydroxideExercise Exercise - 4 [Page 68]

Exercise - 4 | Q 1.1 | Page 68

Write the probable colour of the following salts.

Ferrous salts

Exercise - 4 | Q 1.2 | Page 68

Write the probable colour of the following salts.

Ammonium salts

Exercise - 4 | Q 1.3 | Page 68

Write the probable colour of the following salts.

Cupric salts

Exercise - 4 | Q 1.4 | Page 68

Write the probable colour of the following salts.

Calcium salts

Exercise - 4 | Q 1.5 | Page 68

Write the probable colour of the following salts.

Aluminium Salts

Exercise - 4 | Q 2.01 | Page 68

Name

a metallic hydroxide soluble in excess of NH4OH.

Exercise - 4 | Q 2.02 | Page 68

Name :

a metallic oxide soluble in excess of caustic soda solution.

Exercise - 4 | Q 2.03 | Page 68

Name:

a strong alkali

Exercise - 4 | Q 2.04 | Page 68

Name : a weak alkali

Exercise - 4 | Q 2.05 | Page 68

Name :

two coloured metal ions

Exercise - 4 | Q 2.06 | Page 68

Name

two coloured metal ions

Exercise - 4 | Q 2.07 | Page 68

Name :

a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Exercise - 4 | Q 2.08 | Page 68

Name :

two bases which are not alkalis but dissolves in Strong alkalis .

Exercise - 4 | Q 2.09 | Page 68

Name :

coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Exercise - 4 | Q 2.1 | Page 68

Name:

a coloured cation not a representative element.

Exercise - 4 | Q 3.1 | Page 68

Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.

Exercise - 4 | Q 3.2 | Page 68

Write balanced equation for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.

Exercise - 4 | Q 4.1 | Page 68

What happens when ammonia solution is added first dropwise and then in excess to the following solution:
CuSO4
Write balanced reactions for these equation.

Exercise - 4 | Q 4.2 | Page 68

What happens when ammonia solution is added first dropwise and then in excess to the following solution:
ZnSO4
Write balanced equation for these reaction.

Exercise - 4 | Q 4.3 | Page 68

What happens when ammonia solution is added first dropwise and then in excess to the following solution:
FeCl3

Write balanced equation for these reaction.

Exercise - 4 | Q 5.1 | Page 68

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess.

FeCl

Write balanced equation for this reaction.

Exercise - 4 | Q 5.2 | Page 68

What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:

ZnSO4

Write balanced equation for this reaction.

Exercise - 4 | Q 5.3 | Page 68

What do you observe when caustic soda solution is added to the following solution, first a little and then in excess:

Pb(NO3)2

Write balanced equation for this reaction.

Exercise - 4 | Q 5.4 | Page 68

What do you observe when caustic soda solution is added to the following solution: first a little and then in excess.

CuSO4

Write balanced equation for this reaction.

Exercise - 4 | Q 6 | Page 68

Name the chloride of a metal which is soluble in excess of ammonium hydroxide. Write equation for the same.

Exercise - 4 | Q 7.1 | Page 68

On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution identify (choose from Na, Al, Zn, Pb, Fe)
(a) Which metal salt solution was used?

Exercise - 4 | Q 7.2 | Page 68

On adding dilute ammonia solution to a colourless solution of a salt, a white gelatinous precipitate appears. This precipitate however dissolves on addition of excess of ammonia solution identify (choose from Na, Al, Zn, Pb, Fe)

what is the formula of the white gelatinous precipitate obtained?

Exercise - 4 | Q 8.1 | Page 68

Name :

a yellow monoxide that dissolves in hot and concentrated caustic alkali

Exercise - 4 | Q 8.2 | Page 68

Name:

a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash

Exercise - 4 | Q 8.3 | Page 68

Name:

a compound containing zinc in the anion

Exercise - 4 | Q 9.1 | Page 68

Colour of an aqueous solution of copper sulphate is :

• Green

• Brown

• Blue

• Yellow

Exercise - 4 | Q 9.2 | Page 68

Colour of the precipitate formed on adding NaOH solution to iron (II) sulphate solution is :

• White

• Brown

• Green

• Pale blue

Exercise - 4 | Q 9.3 | Page 68

A metal which produces hydrogen on reacting with alkali as well as with acid.

• Iron

• Magnesium

• Zinc

• Copper

Exercise - 4 | Q 9.4 | Page 68

The salt solution which does not react with ammonium hydroxide is :

• Calcium nitrate

•  Zinc nitrate

• Copper nitrate

Exercise - 4 | Q 10 | Page 68

What do you observe when freshly precipitated aluminium hydroxide reacts with caustic soda solution? Give balanced equation.

Exercise - 4 | Q 11 | Page 68

You are provided with two reagent bottles marked A and B. One of which contains NH4OH solution and the other contains NaOH solution. How will you identify them by a chemical test?

Exercise - 4 | Q 12.1 | Page 68

Distinguish by adding : sodium hydroxide solution and ammonium hydroxide solution to : Calcium salt solution and lead salt solution

Exercise - 4 | Q 12.2 | Page 68

Distinguish by adding : sodium hydroxide solution and ammonium hydroxide solution to : Lead nitrate solution and zinc nitrate solution

Exercise - 4 | Q 12.3 | Page 68

Distinguish by adding : sodium hydroxide solution and ammonium hydroxide solution to : Copper salt solution and ferrous salt solution

Exercise - 4 | Q 12.4 | Page 68

Distinguish by adding : sodium hydroxide solution and ammonium hydroxide solution to : Fe(II) salt solution and Fe(III) salt solution

Exercise - 4 | Q 12.5 | Page 68

Distinguish by adding : sodium hydroxide solution and ammonium hydroxide solution to : Ferrous nitrate and lead nitrate

Exercise - 4 | Q 14.1 | Page 68

What is observed when hot concentrated caustic soda solution is added to Zinc . Write balanced equations.

Exercise - 4 | Q 14.2 | Page 68

What is observed when hot concentrated caustic soda solution is added to Aluminium. Write balanced equations.

Exercise - 4 | Q 15.1 | Page 68

What do you understand by amphoteric oxide?

Exercise - 4 | Q 15.2 | Page 68

Give the balanced equations for the reaction with two different amphoteric oxides with a caustic alkali.

Exercise - 4 | Q 15.3 | Page 68

Name the products formed.

Exercise - 4 | Q 16.1 | Page 68

Write balanced equation for the following conversion :

$\ce{ZnSO4 ->[A]Zn(OH)2->[B]Na2ZnO2}$

Exercise - 4 | Q 16.2 | Page 68

Write balanced equation for the following conversion :

$\ce{CuSO4 ->[A]Cu(OH)2 ->[B] [Cu(NH3)4]SO4}$

## Chapter 4: Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide

Intext QuestionsExercise - 4

## Selina solutions for Concise Chemistry Class 10 ICSE chapter 4 - Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide

Selina solutions for Concise Chemistry Class 10 ICSE chapter 4 (Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Chemistry Class 10 ICSE solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Concise Chemistry Class 10 ICSE chapter 4 Analytical Chemistry: Uses of Ammonium Hydroxide and Sodium Hydroxide are Action of Alkalis (Naoh, Koh) on Certain Metals, Their Oxides and Hydroxides, On Solution of Salts - Sodium Hydroxide on Ammonium Salts, On Solution of Salts - Special Action of Ammonium Hydroxide on Solutions of Copper Salt, Formation and Colour of Hydroxide Precipitated for Solutions of Salts of Ca, Fe, Cu, Zn and Pb, On Solution of Salts - Colour of Salt and Its Solution, Analytical Chemistry.

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