Chapter 8- Fossil fuel : Coal and Petroleum Introduction

1- Chapter 1- Number System Introduction 2- Chapter 1.1- Number System Example 3- Chapter 1.2- Number System Practice Question 4- Chapter 2- LCM and HCF Introduction 5- Chapter 2.1- LCM and HCF Example 6- Chapter 2.2- LCM and HCF Practice Question 7- Chapter 3- Square Root and Cube Root Introduction 8- Chapter 3.1- Square Root and Cube Root Example 9- Chapter 3.2- Square Root and Cube Root Practice Questions 10- Chapter 4- Rational Exponents and Radicals ( Power ) Introduction 11- Chapter 4.1- Rational Exponents and Radicals ( Power ) Example 12- Chapter 4.2- Rational Exponents and Radicals ( Power ) Practice Questions 13- Chapter 5- Average Introduction 14- Chapter 5.1- Average Example 15- Chapter 5.2- Average Practice Questions 16- Chapter 6- Percentage Introduction 17- Chapter 6.1- Percentage Example 18- Chapter 6.2- Percentage Practice Questions 19- Chapter 7- Profit and Loss Introduction 20- Chapter 7.1- Profit and Loss Example 21- Chapter 7.2- Profit and Loss Practice Question 22- Chapter 8- Simple Interest and Compound Interest Introduction 23- Chapter 8.1- Simple Interest and Compound Interest Example 24- Chapter 8.2- Simple Interest and Compound Interest Practice Question 25- Chapter 9- Ratio and Proportion Introduction 26- Chapter 9.1- Ratio and Proportion Example 27- Chapter 9.2- Ratio and Proportion Practice Questions 28- Chapter 10- Work and Time Introduction 29- Chapter 10.1- Work and Time Example 30- Chapter 10.2- Work and Time Practice Questions completed 31- Chapter 11- Speed, Time and Distance Introduction 32- Chapter 11.1- Speed, Time and Distance Example 33- Chapter 11.2- Speed, Time and Distance Practice Questions 34- Chapter 12- Algebraic Expressions and Identities Introduction 35- Chapter 12.1- Algebraic Expressions and Identities Example 36- Chapter 12.2- Algebraic Expressions and Identities Practice Questions 37- Chapter 13- Linear Equation in One Variable Introduction 38- Chapter 13.1- Linear Equation in One Variable Example 39- Chapter 13.2- Linear Equation in One Variable Practice Questions 40- Chapter 14- Factorisation Introduction 41- Chapter 14.1- Factorisation Example 42- Chapter 14.2- Factorisation Practice Questions 43- Chapter 15- Probability Introduction 44- Chapter 15.1- Probability Example 45- Chapter 15.1- Probability Practice Questions 46- Chapter 16- Mensuration Introduction 47- Chapter 16.1- Mensuration Example 48- Chapter 16.2- Mensuration Practice Questions 49- Chapter 17- Geometry Introduction 50- Chapter 17.1- Geometry Example 51- Chapter 17.2- Geometry Practice Questions 52- Chapter 18- Coordinate Geometry Introduction 53- Chapter 18.1- Coordinate Geometry Example 54- Chapter 18.2- Coordinate Geometry Practice Questions 55- Chapter 19- Data Handling Introduction 56- Chapter 19.1- Data Handling Example 57- Chapter 19.2- Data Handling Practice Questions 58- Chapter 1- Noun Introduction 59- Chapter 1.1- Noun Example 60- Chapter 1.2- Noun Practice Papers 61- Chapter 2- Pronoun Introduction 62- Chapter 2.1- Pronoun Example 63- Chapter 2.2- Pronoun Practice Questions 64- Chapter 3- Article Introduction 65- Chapter 3.1- Article Example 66- Chapter 3.2- Article Practice Questions 67- Chapter 4- Adjective Introduction 68- Chapter 4.1- Adjective Example 69- Chapter 4.2- Adjective Practice Questions 70- Chapter 5- The Adverb Introduction 71- Chapter 5.1- The Adverb Example 72- Chapter 5.2- The Adverb Practice Questions 73- Chapter 6- Verb Introduction 74- Chapter 6.1- Verb Example 75- Chapter 6.2- Verb Practice Questions 76- Chapter 7- Modals Introduction 77- Chapter 7.1- Modals Example 78- Chapter 7.2- Modals Practice Questions 79- Chapter 8- Subject- Verb Agreement Introduction 80- Chapter 8.1- Subject- Verb Agreement Example 81- Chapter 8.2- Subject- Verb Agreement Practice Questions 82- Chapter 9- Preposition Introduction 83- Chapter 9.1- Preposition Example 84- Chapter 9.2- Preposition Practice Questions 85- Chapter 10- Conjunction Introduction 86- Chapter 10.1- Conjunction Example 87- Chapter 10.2- Conjunction Practice Questions 88- Chapter 11- Tense and Its Forms Introduction 89- Chapter 11.1- Tense and Its Forms Examples 90- Chapter 11.2- Tense and Its Forms Practice Questions 91- Chapter 12- Narration : Direct and Indirect Introduction 92- Chapter 12.1- Narration : Direct and Indirect Example 93- Chapter 12.2- Narration : Direct and Indirect practice Questions 94- Chapter 13- Voice : Active and Passive Introduction 95- Chapter 13.1- Voice : Active and Passive Examples 96- Chapter 13.2- Voice : Active and Passive practice Questions 97- Chapter 14- Types of Sentences Introduction 98- Chapter 14.1- Types of Sentences Examples 99- Chapter 14.2- Types of Sentences Practice Questions 100- Chapter 15- Sentence Formation Introduction 101- Chapter 15.1- Learn Sentence Formation Examples 102- Chapter 15.2- Sentence Formation Practice Questions 103- Chapter 16- Clauses Introduction 104- Chapter 16.1- Clauses Examples 105- Chapter 16.2- Clauses Practice Questions 106- Chapter 17- Conditional Sentences Introduction 107- Chapter 17.1- Conditional Sentences Examples 108- Chapter 17.2- Conditional Sentences Practice Questions 109- Chapter 18- Question Tag Introduction 110- Chapter 18.1- Question Tag Examples 111- Chapter18.2- Question Tag Practice Questions 112- Chapter 19- Interjection Introduction 113- Chapter 19.2- Interjection Examples 114- Chapter 19.2- Interjection Practice Questions 115- Chapter 20- Sentence Improvement Introduction 116- Chapter 20.1- Sentence Improvement Examples 117- Chapter 20.2- Sentence Improvement Practice Questions 118- Chapter 21- Synonyms and Antonyms Introduction 119- Chapter 21.1- Synonyms and Antonyms Examples 120- Chapter 21,2- Synonyms and Antonyms Practice Questions 121- Chapter 22- Confusing Words ( Homonyms ) Introduction 122- Chapter 22.1- Confusing Words ( Homonyms ) Examples 123- Chapter 22.2- Confusing Words ( Homonyms ) Practice Questions 124- Chapter 23- Idioms and Phrases Introduction 125- Chapter 23.1 Idioms and Phrases Examples 126- Chapter 23.2 Idioms and Phrases Practice Questions 127- Chapter 24- Corrects Spelling Introduction 128- Chapter 24.1- Corrects Spelling Examples 129- Chapter 24.2- Corrects Spelling Practice Questions 130- Chapter 25 -Ordering of Words in Sentence Introduction 131- Chapter 25.1- Ordering of Words in Sentence Examples 132- Chapter 25.2- Ordering of Words in Sentence Practice Questions 133- Chapter 26- Comprehension Introduction 134- Chapter 26.1- Comprehension Examples 135- Chapter 26.2- Comprehension Practice Questions 136- Chapter 1- Delhi Sultanate Introduction 137- chapter 1.1- Delhi Sultanate Example 138- Chapter 1.3- Delhi Sultanate Practice Questions 139- Chapter 2- The Mughal Empire Introduction 140- Chapter 2.1- The Mughal Empire Examples 141- Chapter 2.2- The Mughal Empire Practice Questions 142- Chapter 3- Bhakti and Sufi Movements Introduction 143- Chapter 3.1- Bhakti and Sufi Movements Examples 144- Chapter 3.2- Bhakti and Sufi Movements Practice Questions 145- Chapter 4- Revolt of 1857 Introduction 146- Chapter 4.1- Revolt of 1857 Example 147- Chapter 4.2- Revolt of 1857 Practice Questions 148- Chapter 5- Social, Religious, Caste Reforms and Change in Arts Introduction 149- Chapter 5.1- Social, Religious, Caste Reforms and Change in Arts Examples 150- Chapter 5.2- Social, Religious, Caste Reforms and Change in Arts Practice Questions 151- Chapter 6- Indian National Movements Introduction 152- Chapter 6.1- Indian National Movements Examples 153- CHapter6.2- Indian National Movements Practice Questions 154- Chapter 7- National Freedom Fighters Introduction 155- Chapter 7.1- National Freedom Fighters Examples 156- Chapter 7.2- National Freedom Fighters Practice Questions 157- Chapter 8- Indian Constitution Introduction 158- Chapter 8.1 - Indian Constitution Examples 159- Chapter 8.2- Indian Constitution Practice Questions 160- Chapter 9 - Importance of Parliament Introduction 161- Chapter 9.1- Importance of Parliament Examples 162- Chapter 9.2- Importance of Parliament Practice Questions 163- Chapter 10- Local - Self Government Introduction 164- Chapter 10.1- Local - Self Government Examples 165- Chapter 10.2- Local - Self Government Practice Questions 166- Chapter 11- Elections Introduction 167- Chapter 11.1- Elections Examples 168- Chapter 11.2- Elections Practice Questions 169- Chapter 12- Law of Social Justice Introduction 170- Chapter 12.1- Law of Social Justice Examples 171- Chapter 12.2- Law of Social Justice Practice Questions 172- Chapter 13- Judiciary and Criminal Justice System Introduction 173- Chapter 13.1- Judiciary and Criminal Justice System Examples 174- Chapter 13.2- Judiciary and Criminal Justice System Practice Questions 175- Chapter 14- Secularism and Marginalisation Introduction 176- Chapter 14.1- Secularism and Marginalisation Examples 177- Chapter 14.2- Secularism and Marginalisation Practice Questions 178- Chapter 15- Earth Process Introduction 179- Chapter 15.1- Earth Process Examples 180- Chapter 15.2- Earth Process Practice Questions 181- Chapter 16- Atmosphere Introduction 182- Chapter 16.1- Atmosphere Examples 183- Chapter 16.2- Atmosphere Practice Questions 184- Chapter 17- Resources and Sustainable Development Introduction 185- Chapter 17.1- Resources and Sustainable Development Example 186- Chapter 17.2- Resources and Sustainable Development Practice Questions 187- Chapter 18- Transport and Communication Introduction 188- Chapter 18.1- Transport and Communication Examples 189- Chapter 18.2- Transport and Communication Practice Questions 190- Chapter 1- Analogy Introduction 191- Chapter 1.1- Analogy Examples 192- Chapter 19- Agriculture Introduction 193- Chapter- 19.1- Agriculture Examples 194- Chapter 19.2- Agriculture Practice Questions 195- Chapter 20- Natural Vegetation and Wildlife Introduction 196- Chapter 20.1- Natural Vegetation and Wildlife Example 197- Chapter 20.2- Natural Vegetation and Wildlife Practice Questions 198- Chapter 21- Climate Changes Introduction 199- Chapter 21.1- Climate Changes Examples 200- Chapter 21.2- Climate Changes Practice Questions 201- Chapter 23- Understanding Market Introduction 202- Chapter 23.1- Understanding Market Examples 203- Chapter 23.2- Understanding Market Practice Questions 204- Chapter 24- Industries Introduction 205- Chapter 24.1- Industries Examples 206- Chapter 24.2- Industries Practice Questions 207- Chapter 1.2- Analogy Practice Questions 208- Chapter 2- Classification Introduction 209- Chapter 2.1- Classification Examples 210- Chapter 2.2- Classification Practice Questions 211- Chapter 3- Series Introduction 212- Chapter 3.1- Series Examples 213- Chapter 3.2- Series Practice Questions 214- Chapter 4- Coding - Decoding Introduction 215- Chapter 4.1- Coding - Decoding Examples 216- Chapter 4.2- Coding - Decoding Practice Questions 217- Chapter 5- Logical Order of Words Introduction 218- Chapter 5.1- Logical Order of Words Examples 219- Chapter 5.2- Logical Order of Words Practice Questions 220- Chapter 6- Ranking Introduction 221- Chapter 6.1- Ranking Examples 222- Chapter 6.2- Ranking Practice Questions 223- Chapter 7- Mathematical Operation Introduction 224- Chapter 7.1- Mathematical Operation Examples 225- Chapter 7.2- Mathematical Operation Practice Questions 226- Chapter 8- Word Formation Introduction 227- Chapter 8.1- Word Formation Examples 228- Chapter 8.2- Word Formation Practice Questions 229- Chapter 9- Blood Relations Introduction 230- Chapter 9.1- Blood Relations Examples 231- Chapter 9.2- Blood Relations Practice Questions 232- Chapter 10- Direction sense Test Introduction 233- Chapter 10.1- Direction sense Test Examples 234- Chapter 10.2- Direction sense Test Practice Questions 235- Chapter 11- Logical Venn Diagram Introduction 236- Chapter 11.1- Logical Venn Diagram Examples 237- Chapter 11.2- Logical Venn Diagram Practice Questions 238- Chapter 12- Clock and Calendar Introduction 239- Chapter 12.1- Clock and Calendar Examples 240- Chapter 12.2- Clock and Calendar Practice Questions 241- Chapter 13- Inserting the Missing Character Introduction 242- Chapter 13.1- Inserting the Missing Character Examples 243- Chapter 13.2- Inserting the Missing Character Practice Questions 244- Chapter 14- Sitting Arrangement Introduction 245- Chapter 14.1- Sitting Arrangement Example 246- Chapter 14.2- Sitting Arrangement Practice Questions 247- Chapter 15- Non- Verbal Intelligence Introduction 248- Chapter 15.1- Non- Verbal Intelligence Examples 249- Chapter 15.2- Non- Verbal Intelligence Practice Questions 250- Chapter 1- Force, Friction and Pressure Introduction 251- Chapter 1.1- Force, Friction and Pressure Examples 252- Chapter 1.2- Force, Friction and Pressure Practice Questions 253- Chapter 2- Sounds and Its Basics Introduction 254- Chapter 2.1- Sounds and Its Basics Examples 255- Chapter 2.2- Sounds and Its Basics Practice Questions 256- Chapter 3- Light ( Reflection and Dispersion) Introduction 257- Chapter 3.1- Light ( Reflection and Dispersion) Examples 258- Chapter 3.2- Light ( Reflection and Dispersion) Practice Questions 259- Chapter 4- Current Electricity and Its Effect Introduction 260- Chapter 4.1- Current Electricity and Its Effect Examples 261- Chapter 4.2- Current Electricity and Its Effect Practice Questions 262- Chapter 5- Stars and Solar System Introduction 263- Chapter 5.1- Stars and Solar System Examples 264- Chapter 5.2- Stars and Solar System Practice Questions 265- Chapter 6- Some Natural Phenomenon Introduction 266- Chapter 6.1- Some Natural Phenomenon Examples 267- Chapter 6.2- Some Natural Phenomenon Practice Questions 268- Chapter 7- Metal and Non- metal Introduction 269- Chapter 7.1- Metal and Non- metal Examples 270- Chapter 7.2- Metal and Non- metal Practice Questions 271- Chapter 8- Fossil fuel : Coal and Petroleum Introduction 272- Chapter 8.1- Fossil fuel : Coal and Petroleum Examples 273- Chapter 8.2- Fossil fuel : Coal and Petroleum Practice Questions 274- Chapter 9- Combustion and Flame Introduction 275- Chapter 9.1- Combustion and Flame Examples 276- Chapter 9.2- Combustion and Flame Practice Questions 277- Chapter 10 - Fibres and Plastics Introduction 278- Chapter 10.1- Fibres and Plastics Examples 279- Chapter10.2- Fibres and Plastics Practice Questions 280- Chapter 11- Cell : Structure and Functions Introduction 281- Chapter 11.1- Cell : Structure and Functions Examples 282- Chapter 11.2- Cell : Structure and Functions Practice Questions 283- Chapter 12- Microorganisms Introduction 284- Chapter 12.1- Microorganisms Examples 285- Chapter 12.2- Microorganisms Practice Questions 286- Chapter 13- Reproduction in Plants and Animals Introduction 287- Chapter 13.2- Reproduction in Plants and Animals Examples 288- Chapter 14- Endocrine Gland and Harmones Introduction 289- Chapter 14.1- Endocrine Gland and Harmones Examples 290- Chapter 14.2- Endocrine Gland and Harmones Practice Questions 291- Chapter 15- Agriculture Practices Introduction 292- Chapter 15.1- Agriculture Practices Examples 293- Chapter 15.2- Agriculture Practices Practice Questions 294- Chapter 16- Conservation of plants and Animals Introduction 295- Chapter 16.1- Conservation of plants and Animals Examples 296- chapter 16.2- Conservation of plants and Animals Practice Questions