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Selina solutions for Concise Science Chemistry 1 Class 9 ICSE chapter 6 - Study of the First Element - Hydrogen [Latest edition]

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Concise Science Chemistry 1 Class 9 ICSE - Shaalaa.com
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Chapter 6: Study of the First Element - Hydrogen

Exercise 6 (A)Exercise 6 (B)Exercise 6 (C)Exercise 6 (D)
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Exercise 6 (A) [Pages 102 - 105]

Selina solutions for Concise Science Chemistry 1 Class 9 ICSE Chapter 6 Study of the First Element - HydrogenExercise 6 (A) [Pages 102 - 105]

Exercise 6 (A) | Q 1 | Page 102

Justify the position of hydrogen in the periodic table.

Exercise 6 (A) | Q 1.2 | Page 105

Hydrogen can be prepared with the metal zinc by using: alkali

Give an equation.

Exercise 6 (A) | Q 1.3 | Page 105

Hydrogen can be prepared with the metal zinc by using: water

Give an equation.

Exercise 6 (A) | Q 2 | Page 102

Why does hydrogen show dual nature?

Exercise 6 (A) | Q 3.1 | Page 102

Compare hydrogen with alkali metals on the basis of:

Ion formation

Exercise 6 (A) | Q 3.2 | Page 102

Compare hydrogen with alkali metals on the basis of:

Reducing power

Exercise 6 (A) | Q 3.3 | Page 102

Compare hydrogen with alkali metals on the basis of:

Reaction with oxygen

Exercise 6 (A) | Q 3.4 | Page 102

Compare hydrogen with alkali metals on the basis of:

Oxide formation 

Exercise 6 (A) | Q 4.1 | Page 102

In what respect does hydrogen differ from:

alkali metals

Exercise 6 (A) | Q 4.2 | Page 102

In what respect does hydrogen differ from:

halogens? 

Exercise 6 (A) | Q 5.1 | Page 102

Give the general group study of hydrogen with reference to

valence electrons

Exercise 6 (A) | Q 5.2 | Page 102

Give the general group study of hydrogen with reference to

burning

Exercise 6 (A) | Q 5.3 | Page 102

Give the general group study of hydrogen with reference to

reducing power 

Exercise 6 (A) | Q 6 | Page 102

Why hydrogen was called 'inflammable air'?

Exercise 6 (A) | Q 7 | Page 102

State some sources of hydrogen.

Exercise 6 (A) | Q 8.1 | Page 102

Compare hydrogen and halogens on the basis of:

physical state

Exercise 6 (A) | Q 8.2 | Page 102

Compare hydrogen and halogens on the basis of:

ion formation

Exercise 6 (A) | Q 8.3 | Page 102

Compare hydrogen and halogens on the basis of:

valency 

Exercise 6 (A) | Q 8.4 | Page 102

Compare hydrogen and halogens on the basis of:

reaction with oxygen 

Exercise 6 (A) | Q 9.1 | Page 102

Which metal is preferred for the preparation of hydrogen?

from water?

Exercise 6 (A) | Q 9.2 | Page 102

Which metal is preferred for the preparation of hydrogen?

from acid? 

Exercise 6 (A) | Q 10.1 | Page 102

Write the reaction of steam with a red hot iron.

Exercise 6 (A) | Q 10.2 | Page 102

Why this reaction is considered a reversible reaction?

Exercise 6 (A) | Q 11 | Page 102

Why zinc and aluminium are considered to have a unique nature. Give balanced equations to support your answer.

Exercise 6 (A) | Q 12.1 | Page 102

Write a balanced equation for the following:

Iron reacts with dil. HCl

Exercise 6 (A) | Q 12.2 | Page 102

Write a balanced equation for the following:

Zinc reacts with caustic soda solution

Exercise 6 (A) | Q 12.3 | Page 102

Write a balanced equation for the following:

Lead reacts with potassium hydroxide

Exercise 6 (A) | Q 12.4 | Page 102

Write a balanced equation for the following:

Aluminum reacts with fused sodium hydroxide 

Exercise 6 (A) | Q 13.1 | Page 102

Write the balanced equation and give your observation when the following metal reacts:

Sodium with cold water

Exercise 6 (A) | Q 13.2 | Page 102

Write the balanced equation and give your observation when the following metal reacts:

Calcium with cold water

Exercise 6 (A) | Q 13.3 | Page 102

Write the balanced equation and give your observation when the following metal reacts:

Magnesium with boiling water

Exercise 6 (A) | Q 13.4 | Page 102

Write the balanced equation and give your observation when the following metal reacts:

Magnesium with steam

Exercise 6 (A) | Q 14.1 | Page 102

Under what conditions iron reacts with water.

Exercise 6 (A) | Q 14.2 | Page 102

Give the balanced equation of the reaction.

Exercise 6 (A) | Q 14.3 | Page 102

What is noticed if the products are not allowed to escape?

Exercise 6 (A) | Q 15.1 | Page 102

From the knowledge of activity series, name a metal which shows the following properties

It reacts readily with cold water

Exercise 6 (A) | Q 15.2 | Page 102

From the knowledge of activity series, name a metal which shows the following properties:

It displaces hydrogen from hot water.

Exercise 6 (A) | Q 15.3 | Page 102

From the knowledge of activity series, name a metal which shows the following properties:

It displaces hydrogen from dilute HCl.

Exercise 6 (A) | Q 15.4 | Page 102

From the knowledge of activity series, name a metal which shows the following properties:

It forms a base which is insoluble in water. 

Exercise 6 (A) | Q 16.1 | Page 102

Complete the following word equation:

Sodium hydroxide + zinc → hydrogen + _________

Exercise 6 (A) | Q 16.2 | Page 102

Complete the following word equation:

Calcium + water → calcium hydroxide + _________

Exercise 6 (B) [Pages 105 - 106]

Selina solutions for Concise Science Chemistry 1 Class 9 ICSE Chapter 6 Study of the First Element - HydrogenExercise 6 (B) [Pages 105 - 106]

Exercise 6 (B) | Q 1.1 | Page 105

Hydrogen can be prepared with the metal zinc by using: acid

Give an equation.

Exercise 6 (B) | Q 2.1 | Page 105

For laboratory preparation of hydrogen, give the following:

materials used

Exercise 6 (B) | Q 2.2 | Page 105

For laboratory preparation of hydrogen, give the following:

method of collection

Exercise 6 (B) | Q 2.3 | Page 105

For laboratory preparation of hydrogen, give the following:

chemical equation

Exercise 6 (B) | Q 2.4 | Page 105

For laboratory preparation of hydrogen, give the following:

fully-labeled diagram 

Exercise 6 (B) | Q 3.1 | Page 105

Name the impurities present in hydrogen prepared in the laboratory.

Exercise 6 (B) | Q 3.2 | Page 105

How can these impurities be removed? 

Exercise 6 (B) | Q 4 | Page 105

Which test should be made before collecting hydrogen in a gas jar?

Exercise 6 (B) | Q 5 | Page 105

Why nitric acid is not used in the preparation of hydrogen?

Exercise 6 (B) | Q 6 | Page 105

Why hot concentrated sulphuric acid is not used in the preparation of hydrogen?

Exercise 6 (B) | Q 7.1 | Page 105

Hydrogen is manufactured by the 'Bosch Process'.

Give the equation with conditions.

Exercise 6 (B) | Q 7.2 | Page 105

Hydrogen is manufactured by the 'Bosch Process'.

How can you obtain hydrogen from a mixture of hydrogen and carbon monoxide? 

Exercise 6 (B) | Q 8.1 | Page 105

Give an equation to express the reaction between:

Steam and red hot iron

Exercise 6 (B) | Q 8.2 | Page 105

Give an equation to express the reaction between:

Calcium and water 

Exercise 6 (B) | Q 9.1 | Page 105

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

Name the gas formed in the reaction. How would you test the gas?

Exercise 6 (B) | Q 9.2 | Page 105

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

Write an equation for the reaction.

Exercise 6 (B) | Q 9.3 | Page 105

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.

What do you observe when a few drops of red litmus solution are added to the turbid solution.

Exercise 6 (B) | Q 10.1 | Page 105

Thin strips of magnesium, copper, and iron are taken.

Write down what happens when these metals are treated as follows:

    1. Heated in presence of air
    2. Heated with dil.HCl
    3. Added to an aqueous solution of zinc sulphate.
Exercise 6 (B) | Q 10.2 | Page 106

Thin strips of magnesium, copper, and iron are taken.

Arrange these metals in descending order of reactivity. 

Exercise 6 (B) | Q 11.1 | Page 106

Choose the correct option:

Hydrogen is evolved by the action of cold dil. HNO3 on

  • Fe

  • Cu

  • Mg

  • Zn

Exercise 6 (B) | Q 11.2 | Page 106

Choose the correct option:

Which metal absorbs hydrogen?

  • Al

  • Fe

  • Pd

  • K

Exercise 6 (B) | Q 11.3 | Page 106

Choose the correct option:

The composition of the nucleus of deuterium is

  • 1 e- and 1P

  • 1 P and 1 A

  • 1 n and 1 e

  • 2P and 1 e-

Exercise 6 (B) | Q 11.4 | Page 106

 

Choose the correct option:

Elements which show unique nature in the preparation of hydrogen are:

  • Na, K, Li

  • Mg, Ca, Ba

  • Al, Zn, Pb

  • Fe, Cu, Ag

Exercise 6 (B) | Q 12.1 | Page 106

Give a reason for the following:

Zinc granules are used in the lab preparation of hydrogen.

Exercise 6 (B) | Q 12.2 | Page 106

Give reason for the following:

Purified and dried hydrogen is collected over mercury.

Exercise 6 (B) | Q 12.3 | Page 106

Give reason for the following:

The end of the thistle funnel should be dipped under acid.

Exercise 6 (B) | Q 12.4 | Page 106

Give reason for the following:

Dilute sulphuric acid cannot be replaced by concentrated acid in the preparation of hydrogen.

Exercise 6 (C) [Pages 108 - 109]

Selina solutions for Concise Science Chemistry 1 Class 9 ICSE Chapter 6 Study of the First Element - HydrogenExercise 6 (C) [Pages 108 - 109]

Exercise 6 (C) | Q 1.1 | Page 108

Where does hydrogen occur in a free state?

Exercise 6 (C) | Q 1.2 | Page 108

How did the name 'hydrogen' originate? 

Exercise 6 (C) | Q 2.1 | Page 108

Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:

A monovalent metal

Exercise 6 (C) | Q 2.2 | Page 108

Hydrogen can be prepared with the help of cold water. Give a reaction of hydrogen with:

A divalent metal 

Exercise 6 (C) | Q 3.1 | Page 108

Which metal is preferred for collecting hydrogen from:
Write the balanced equation

Coldwater

Exercise 6 (C) | Q 3.2 | Page 108

Which metal is preferred for collecting hydrogen from:
Write the balanced equation

Hot water

Exercise 6 (C) | Q 3.3 | Page 108

Which metal is preferred for collecting hydrogen from:
Write the balanced equation

Steam

Exercise 6 (C) | Q 4.1 | Page 108

Hydrogen may be prepared in the laboratory by the action of a metal on an acid.

Which of the metals copper, zinc, magnesium or sodium would be the most suitable?

Exercise 6 (C) | Q 4.2 | Page 108

Hydrogen may be prepared in the laboratory by the action of a metal on an acid.

Which of the acids dilute sulphuric, concentrated sulphuric, dilute nitric acid and concentrated nitric acid would you choose? Explain why you would not use the acids you reject.

Exercise 6 (C) | Q 4.3 | Page 108

Hydrogen may be prepared in the laboratory by the action of a metal on an acid.

How would you modify your apparatus to collect dry hydrogen? Which drying agent would you employ for this purpose? 

Exercise 6 (C) | Q 5.1 | Page 108

Why are the following metals not used in the lab preparation of hydrogen?

calcium

Exercise 6 (C) | Q 5.2 | Page 108

Why are the following metal not used in the lab. preparation of hydrogen?

iron

Exercise 6 (C) | Q 5.3 | Page 108

Why are the following metals not used in the lab. preparation of hydrogen?

aluminium 

Exercise 6 (C) | Q 5.4 | Page 108

Why are the following metals not used in the lab. preparation of hydrogen?

sodium 

Exercise 6 (C) | Q 6 | Page 108

Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium

Exercise 6 (C) | Q 7 | Page 108

Hydrogen is evolved when dilute HCl reacts with magnesium, but nothing happens in the case of mercury and silver. Explain.

Exercise 6 (C) | Q 8 | Page 108

Steam can react with metal and non-metal to liberate hydrogen. Give the necessary conditions and equations for the same.

Exercise 6 (C) | Q 9 | Page 108

Hydrogen is obtained by displacement from:

  1. dilute sulphuric acid
  2. dilute hydrochloric acid

Write equations using zinc and iron.
Why does copper not show similar behavior?

Exercise 6 (C) | Q 10.1 | Page 108

Account for the following fact:

Though lead is above hydrogen in the activity series, it does not react with dilute hydrochloric acid or dilutes sulphuric acid.

Exercise 6 (C) | Q 10.2 | Page 108

Give reason for the following:

Potassium and sodium are not used for reaction with dilute hydrochloric acid or dilute sulphuric acid in the laboratory preparation of hydrogen. 

Exercise 6 (C) | Q 11 | Page 108

Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?

Exercise 6 (C) | Q 12.01 | Page 108

Complete and balance the following reaction.

Na + H2O →_____________ +___________

Exercise 6 (C) | Q 12.02 | Page 108

Complete and balance the following reaction.

Ca + H2O →_____________ +___________

Exercise 6 (C) | Q 12.03 | Page 108

Complete and balance the following reaction.

Mg + H2O →_____________ +___________

Exercise 6 (C) | Q 12.04 | Page 108

Complete and balance the following reaction.

Zn + H2O →_____________ +___________

Exercise 6 (C) | Q 12.05 | Page 108

Complete and balance the following reaction.

Fe + H2O →_____________ +___________

Exercise 6 (C) | Q 12.06 | Page 108

Complete and balance the following reaction.

Zn + HCl →_____________ +___________

Exercise 6 (C) | Q 12.07 | Page 108

Complete and balance the following reaction.

Al + H2SO4 →_____________ +___________

Exercise 6 (C) | Q 12.08 | Page 108

Complete and balance the following reaction.

Fe + HCl →_____________ +___________

Exercise 6 (C) | Q 12.09 | Page 108

Complete and balance the following reaction.

Zn + NaOH →_____________ +___________

Exercise 6 (C) | Q 12.1 | Page 108

Complete and balance the following reaction.

Al + KOH + H2O→_____________ +___________ 

Exercise 6 (C) | Q 14.1 | Page 109

Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.

Exercise 6 (C) | Q 14.2 | Page 109

Write a balanced equation for the reaction named metal with (i) boiling water (ii) steam.

Exercise 6 (C) | Q 15 | Page 109

What do you observe when hydrogen gas is passed through a soap solution?

Exercise 6 (C) | Q 16.1 | Page 109

Under what conditions can hydrogen be made to combine with nitrogen?

Name the products and write the equation for the reaction.

Exercise 6 (C) | Q 16.2 | Page 109

Under what conditions can hydrogen be made to combine with chlorine?

Name the products and write the equation for the reaction.

Exercise 6 (C) | Q 16.3 | Page 109

Under what conditions can hydrogen be made to combine with sulphur?

Name the products and write the equation for the reaction.

Exercise 6 (C) | Q 16.4 | Page 109

Under what conditions can hydrogen be made to combine with oxygen?

Name the products and write the equation for the reaction.

Exercise 6 (C) | Q 17 | Page 109

When hydrogen is passed over a black solid compound A, the products are a 'colorless liquid' and a 'reddish-brown metal B'.

Substance B is divided into two parts each placed in separate test tubes.

Dilute HCl is added to one part of substance B and dilute HNO3 to the other.

  1. Name the substances A and B.
  2. Give two tests for the colourless liquid formed in the experiment.
  3. What happens to substance A when it reacts with hydrogen? Give reasons for your answer.
  4. Write an equation for the reaction between hydrogen and substance A.
  5. Is there any reaction between substance B and dilute hydrochloric acid? Give reasons for your answer.
Exercise 6 (D) [Pages 112 - 113]

Selina solutions for Concise Science Chemistry 1 Class 9 ICSE Chapter 6 Study of the First Element - HydrogenExercise 6 (D) [Pages 112 - 113]

Exercise 6 (D) | Q 1 | Page 112

Describe briefly the ionic concept of oxidation and reduction. Give an equation to illustrate.

Exercise 6 (D) | Q 2 | Page 112

Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain

Exercise 6 (D) | Q 3.1 | Page 112

State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.

PbO + CO → Pb + CO2

Exercise 6 (D) | Q 3.2 | Page 112

State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.

Mg + 2HCl → MgCl2 + H2

Exercise 6 (D) | Q 3.3 | Page 112

State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.

H2+ Cl2→ 2HCl + S

Exercise 6 (D) | Q 3.4 | Page 112

State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.

Cl2 + H2S → 2HCl + S 

Exercise 6 (D) | Q 4.1 | Page 112

State whether the following conversion is oxidation or reduction:

PbO2 + SO2→ PbSO4 

Exercise 6 (D) | Q 4.2 | Page 112

State whether the following conversion is oxidation or reduction:

Cu2+ + 2 e-→ Cu 

Exercise 6 (D) | Q 4.3 | Page 112

State whether the following conversion is oxidation or reduction:

K → K+ + e- 

Exercise 6 (D) | Q 4.4 | Page 112

State whether the following conversion is oxidation or reduction:

2Cl- - e-→ Cl2 

Exercise 6 (D) | Q 5 | Page 112

In the following reaction: A+ + B → A + B+. Write half-reactions for this reaction and name:

  1. oxidizing agent
  2. substance oxidized
  3. reducing agent 
Exercise 6 (D) | Q 6.1 | Page 112

Divide the following reactions into oxidation and reduction half-reaction:

Zn + Pb2+→ Pb + Zn 2+

Exercise 6 (D) | Q 6.2 | Page 112

Divide the following reactions into oxidation and reduction half-reaction:

Zn + Cu2+ → Cu + Zn 2+

Exercise 6 (D) | Q 6.3 | Page 112

Divide the following reactions into oxidation and reduction half-reaction:

Cl2 + 2Br- → Br2 + 2Cl-

Exercise 6 (D) | Q 7.1 | Page 112

Write the equation in the ionic form

CuSO4(aq)  + Fe(s)→ FeSO4(aq) + Cu(s)

 

 

Exercise 6 (D) | Q 7.2 | Page 112

Divide the above equation into oxidation and reduction half-reactions.

Exercise 6 (D) | Q 8.1 | Page 112

Give a reason for the following.

Hydrogen is collected by the downward displacement of water and not of air, even though it is lighter than air.

Exercise 6 (D) | Q 8.2 | Page 112

Give reason:

A candle brought near the mouth of a jar containing hydrogen gas starts burning but is extinguished when pushed inside the jar.

Exercise 6 (D) | Q 8.3 | Page 112

Give reason:

Apparatus for laboratory preparation of hydrogen should be airtight and away from a naked flame.

Exercise 6 (D) | Q 9.1 | Page 112

Select the odd one out and justify your answer.

Zn, Fe, Mg, and Na

Exercise 6 (D) | Q 9.2 | Page 112

Select the odd one out and justify your answer.

SO2, H2S, NH3, and CO3

Exercise 6 (D) | Q 9.3 | Page 112

Select the odd one out and justify your answer.

Fe, Zn, Cu and Mg

Exercise 6 (D) | Q 9.4 | Page 112

Select the odd one out and justify your answer.

Fe, Pb, Al and Zn 

Exercise 6 (D) | Q 10.1 | Page 113

Helium is preferred to hydrogen for filling balloons because it is:

  • lighter than air

  • almost as light as hydrogen

  • non-combustible

  • inflammable

Exercise 6 (D) | Q 10.2 | Page 113

Reacting with water, an active metal produces

  • oxygen

  • nitric acid

  • a base

  • none of these

Exercise 6 (D) | Q 10.3 | Page 113

A metal oxide that is reduced by hydrogen is

  • Al2O3

  • CuO

  • CaO

  • Na2O

Exercise 6 (D) | Q 10.4 | Page 113

Which of the following statements about hydrogen is incorrect?

  • It is an inflammable gas

  • It is the lightest gas.

  • It is not easily liquefied

  • It is a strong oxidizing agent.

Exercise 6 (D) | Q 10.5 | Page 113

For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?

  • H2 is the reducing agent.

  • PbO is the oxidizing agent.

  • PbO is oxidized to Pb.

  • H2 is oxidized to H2O.

Exercise 6 (D) | Q 10.6 | Page 113

Which metal gives hydrogen with all of the following: water, acids, alkalis?

  • Fe

  • Zn

  • Mg

  • Pb

Exercise 6 (D) | Q 10.7 | Page 113

Which of the following metals does not give hydrogen with acids?

  • Iron

  • Copper

  • Lead

  • Zinc

Exercise 6 (D) | Q 11.1 | Page 113

Choose terms from the options given in brackets to complete this sentence.

When CuO reacts with hydrogen,………………… is reduced and ……………….is oxidized to ………………….

(CuO, H2, Cu, H2O)

 

Exercise 6 (D) | Q 11.2 | Page 113

Choose terms from the options given in brackets to complete this sentence.

Hydrogen is ………………… soluble in water.

(sparingly, highly, moderately)

Exercise 6 (D) | Q 11.3 | Page 113

Choose terms from the options given in brackets to complete this sentence.

Metals like …………….. , ……………… and ……………… give H2 with steam.

(iron, magnesium, aluminium, sodium, calcium)

Exercise 6 (D) | Q 11.4 | Page 113

Choose terms from the options given in brackets to complete this sentence.

Sodium ………………. reacts smoothly with cold water.

(metal, amalgam, in the molten state)

Exercise 6 (D) | Q 11.5 | Page 113

Choose terms from the options given in brackets to complete this sentence.

A metal …………….. hydrogen in the activity series gives hydrogen with …………… acid or …………… acid.

(above, below, dilute hydrochloric, concentrated hydrochloric, dilute sulphuric). 

Exercise 6 (D) | Q 12.1 | Page 113

Correct the following statement:

Hydrogen is separated from CO by passing the mixture through caustic potash solution.

Exercise 6 (D) | Q 12.2 | Page 113

Correct the following statement:

All metals react with acids to give hydrogen.

Exercise 6 (D) | Q 12.3 | Page 113

Correct the following statement:

Hydrogen is dried by passing it through conc. H2SO4.

Exercise 6 (D) | Q 12.4 | Page 113

Correct the following statement:

Very dilute nitric acid reacts with iron to produce hydrogen.

Exercise 6 (D) | Q 12.5 | Page 113

Correct the following statement:

Conc. H2SO4 reacts with zinc to liberate hydrogen. 

Exercise 6 (D) | Q 13.1 | Page 113

Name:

an oxidizing agent that does not contain oxygen.

Exercise 6 (D) | Q 13.2 | Page 113

Name: 

a substance that oxidizes concentrated HCl to chlorine.

Exercise 6 (D) | Q 13.3 | Page 113

Name:

a substance that will reduce aqueous Iron(III)ions to iron(II)ions.

Exercise 6 (D) | Q 13.4 | Page 113

Name: 

a liquid that is an oxidizing agent as well as a reducing agent.

Exercise 6 (D) | Q 13.5 | Page 113

Name:

a gas that is oxidizing as well as a reducing agent.

Exercise 6 (D) | Q 13.6 | Page 113

Name: 

a solid that is an oxidizing agent. 

Chapter 6: Study of the First Element - Hydrogen

Exercise 6 (A)Exercise 6 (B)Exercise 6 (C)Exercise 6 (D)
Concise Science Chemistry 1 Class 9 ICSE - Shaalaa.com

Selina solutions for Concise Science Chemistry 1 Class 9 ICSE chapter 6 - Study of the First Element - Hydrogen

Selina solutions for Concise Science Chemistry 1 Class 9 ICSE chapter 6 (Study of the First Element - Hydrogen) 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 Science Chemistry 1 Class 9 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Science Chemistry 1 Class 9 ICSE chapter 6 Study of the First Element - Hydrogen are Position of Hydrogen in Periodic Table, Similarities Between Hydrogen and Alkali Metals, Laboratory Preparation of Hydrogen, Application of Activity Series in the Preparation of Hydrogen, Preparation of Hydrogen, Similarities Between Hydrogen and Halogens, Hydrogen, Chemical Properties of Hydrogen, Manufacture of Hydrogen, Oxidation, Reduction and Redox Reactions, Physical Properties of Hydrogen, Uses of Hydrogen.

Using Selina Class 9 solutions Study of the First Element - Hydrogen exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 9 prefer Selina Textbook Solutions to score more in exam.

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