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  - Modern Physics
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- Chemistry
  - Physical Chemistry
    - States of Matter 202
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    - Ionic Equilibrium 50
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  - Inorganic Chemistry
    - Periodic Table 231
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    - Coordination Compounds 23
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    - s Block Elements 1
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    - f Block Elements 5
    - Hydrogen 8
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    - Acids and Bases 74
    - Salt Analysis 28
  - Organic Chemistry
    - Organic Compounds Classification 28
    - Structural Isomerism 13
    - Nomenclature 83
    - Hydrocarbons 6
    - Haloalkanes 6
    - Alcohols 10
    - Aldehydes 3
    - Ketones 4
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    - Amines 3
    - Organic Biomolecules 17
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  - Analytical Chemistry
    - Qualitative Analysis 9
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    - Titrations 3
    - Gravimetric Analysis 5
    - Chromatography 5
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    - Electroanalytical Methods 10
    - Mass Spectrometry 5
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    - Separation Techniques 24
  - Biochemistry
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    - Proteins 31
    - Enzymes 24
    - Lipids 49
    - Nucleic Acids 8
    - Metabolism 4
    - Bioenergetics 1
    - Vitamins 35
    - Hormones 17
    - Cell Signaling 16
    - Genetic Code 4
  - Environmental Chemistry
    - Air Pollution 18
    - Water Pollution 20
    - Soil Pollution 4
    - Waste Management 54
    - Ozone Depletion 9
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    - Eutrophication 2
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    - Radioactive Pollution 3
  - Industrial Chemistry
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    - Food Chemistry 13
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  - Nuclear Chemistry
    - Chemistry Radioactivity 2
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    - Nuclear Safety 51
  - Polymer Chemistry
    - Polymerization 1
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    - Natural Polymers 1
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    - Thermoplastics 3
    - Polymer Properties 1
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  - Theoretical Chemistry
    - Molecular Modeling 1
    - Computational Chemistry 1
    - Statistical Mechanics 12
    - Chemical Thermodynamics 13
    - Reaction Dynamics 125
    - Electronic Structure 57
    - Molecular Dynamics 18
    - Spectroscopy Theory 1
  - Medicinal Chemistry
    - Drug Design 4
    - Pharmacokinetics 42
    - Pharmacodynamics 19
    - Drug Metabolism 7
    - Enzyme Inhibition 26
    - Receptor Binding 12
    - Structure Activity 11
    - Prodrugs 5
    - Natural Products 19
    - Peptidomimetics 4
  - Green Chemistry
    - Principles 8
    - Sustainable Design 1
    - Waste Prevention 8
    - Energy Efficiency 13
    - Catalysis 1
    - Biodegradable Materials 1
    - Green Synthesis 1
    - Solvent Reduction 10
    - Atom Economy 2
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  - Materials Chemistry
    - Crystal Structure 51
    - Band Theory 7
    - Materials Polymers 2
    - Ceramics 5
    - Composites 2
    - Nanomaterials 9
    - Biomaterials 3
    - Corrosion 28
    - Alloys 11
    - Superconductors 1
    - Thin Films 1
    - Magnetic Materials 4
    - Optical Materials 4
- Biology
  - Cell Biology
    - Cell Theory 100
    - Prokaryotic Cells 17
    - Eukaryotic Cells 26
    - Cell Organelles 63
    - Cell Membrane 70
    - Cell Wall 2
    - Cytoplasm 14
    - Nucleus 12
    - Mitochondria 16
    - Chloroplasts 15
    - Ribosomes 13
    - Endoplasmic Reticulum 2
    - Golgi Apparatus 15
    - Lysosomes 6
    - Cytoskeleton 12
    - Cell Division 113
    - Cell Cycle 37
    - Transport Mechanisms 93
    - Cell Communication 2
  - Genetics
    - DNA Structure 95
    - RNA Structure 38
    - Gene Expression 15
    - Biological Genetic Code 5
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    - Transcription 8
    - Translation 4
    - Mutation 43
    - Mendelian Inheritance 38
    - Non Mendelian Inheritance 87
    - Genetic Disorders 130
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    - Epigenetics 5
  - Evolution
    - Origin of Life 47
    - Theories of Evolution 13
    - Natural Selection 42
    - Variation 27
    - Adaptation 23
    - Speciation 9
    - Fossil Record 12
    - Comparative Anatomy 31
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    - Human Evolution 22
    - Coevolution 6
    - Extinction 12
  - Ecology
    - Ecosystem 53
    - Biomes 10
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    - Food Chains 98
    - Food Webs 45
    - Ecological Energy Flow 24
    - Nutrient Cycles 57
    - Biodiversity 183
    - Ecological Conservation 95
    - Habitat 119
    - Succession 24
    - Ecological Adaptation 38
    - Human Impact 37
    - Ecological Climate Change 16
  - Human Anatomy and Physiology
    - Skeletal System 252
    - Muscular System 161
    - Nervous System 340
    - Endocrine System 186
    - Circulatory System 207
    - Respiratory System 177
    - Digestive System 128
    - Excretory System 73
    - Reproductive System 139
    - Immune System 99
    - Integumentary System 51
    - Sensory Organs 213
  - Botany Plant Biology
    - Plant Anatomy 5
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    - Plant Physiology 74
    - Photosynthesis 104
    - Plant Reproduction 32
    - Plant Growth 9
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    - Plant Taxonomy 93
    - Plant Ecology 32
    - Plant Pathology 12
    - Economic Botany 48
    - Seed Biology 6
    - Plant Genetics 5
    - Plant Adaptations 53
  - Zoology Animal Biology
    - Classification 267
    - Porifera 10
    - Cnidaria 21
    - Platyhelminthes 34
    - Nematoda 17
    - Annelida 16
    - Arthropoda 26
    - Mollusca 16
    - Echinodermata 19
    - Chordata 13
    - Fish 27
    - Amphibians 28
    - Reptiles 41
    - Birds 61
    - Mammals 38
    - Anatomy 30
    - Physiology 29
    - Reproduction 40
    - Development 16
    - Behavior 170
  - Microbiology
    - Microbial Structure 58
    - Bacteriology 7
    - Virology 18
    - Mycology 23
    - Parasitology 45
    - Microbial Genetics 2
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    - Pathogenic Microbiology 177
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    - Industrial Microbiology 4
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  - Biotechnology
    - Bio Genetic Engineering 4
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    - Cloning 6
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    - Gel Electrophoresis 21
    - DNA Sequencing 6
    - Gene Therapy 3
    - CRISPR 9
    - Stem Cells 9
    - Bioreactors 5
    - Fermentation 5
    - Bioinformatics 6
    - GMOs 12
    - Proteomics 1
    - Metabolomics 3
  - Molecular Biology
    - Biological Biomolecules 17
    - Carbohydrates 29
    - Biochemical Lipids 2
    - Bio Proteins 12
    - Bio Enzymes 3
    - Bio Nucleic Acids 21
    - Biochemical Vitamins 36
    - Bio Minerals 5
    - Bio Metabolism 47
    - Cellular Respiration 112
    - Nitrogen Metabolism 9
    - Bio Hormones 13
    - Signal Transduction 6
  - Immunology
    - Innate Immunity 16
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  - Developmental Biology
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    - Fertilization 48
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    - Gastrulation 5
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    - Metamorphosis 15
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    - Aging 30
- Earth and Space Science
  - Geology
    - Minerals 52
    - Rocks 18
    - Geological Rock Cycle 45
    - Plate Tectonics 107
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    - Soil 8
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  - Meteorology
    - Metrological Atmosphere 12
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  - Oceanography
    - Ocean Basins 21
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    - Marine Life 30
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  - Environmental Geoscience
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  - Earth Systems and Cycles
    - Geosphere 4
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    - Biosphere 5
    - Rock Cycle 15
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    - Climate System 3
  - Soil Science
    - Soil Formation 3
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    - Soil Physics 1
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- Astronomy
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  - Cosmology
    - Big Bang 22
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  - Exoplanets
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  - Celestial Mechanics and Orbits
    - Orbital Motion 7
    - Kepler Laws 3
    - Newton Laws 60
    - Orbital Gravity 1
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    - Retrograde Motion 3
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Math

Classification Quizzes, Questions & Answers

Recent Classification Quizzes

Quiz On Shepard

Take this quiz and learn more about shepard dog breed!

Questions: 10 | Attempts: 101 | Last updated: May 18, 2015

Sample Question
Who is the father of the German Shepherd breed?

John D. Johnson

Captain Max Von Stephanitz

Albert Payson Terhune

James Farrow

How Well Do You Know Your Bees?

How Well do you Know your Bees?

There are lots of things out there that look like bees but aren't. How good are you at spotting the impostors?

Questions: 10 | Attempts: 125 | Last updated: Mar 20, 2023

Sample Question
Is this a bee?

Yes

No

Test Your Penguin Smarts

There are 18 species of penguins, and while all of them can be recognized by their black and white feathers, there are many characteristics that make each unique. See how much you know about the world’s penguins by taking...

Questions: 8 | Attempts: 981 | Last updated: Jan 16, 2023

Sample Question
Which penguin species can be found in the northernmost climate?

Chinstrap

Snares

African

Galapagos

None of the above

All of the above

Test Your Knowledge About Animals

This quiz is just for fun and if you are interested in animals!!you can play

Questions: 848 | Attempts: 1411 | Last updated: Apr 21, 2025

Sample Question
What type of animal is a lemur?

Bird

Fish

Cat

Primate

African Animals Quiz For Kids | Cool Kid Quizzes

African Animals Quiz for Kids | Cool Kid Quizzes

Get ready for a fun African Animals Quiz for Kids. Africa is a huge continent with various kinds of animals. Some animals are only found in Africa and not in any other part of the world. This quiz will see how well aware you are...

Questions: 10 | Attempts: 1397 | Last updated: Mar 18, 2023

Sample Question
What are male burros called?

Jacks

Hunters

Broncos

Studs

Fun Quiz: Can You Name All 15 Of These Animals?

Fun Quiz: Can You Name All 15 of These Animals?

If you have studied and researched animals deeply, you can easily ace this quiz. But if you haven't, you have to learn. Take this name that animal quiz, and see how much do you remember from your books or learning. This is a...

Questions: 15 | Attempts: 1962 | Last updated: Mar 21, 2023

Sample Question
Which name is given to this long-tailed rodent?

Mus

Hamster

Jerboa

Nutria

All About Dogs

Explore the fascinating world of dogs with our 'All About Dogs' quiz. Test your knowledge on various breeds like Labrador Retrievers and Great Danes, their characteristics, and historical roles. Ideal for learners interested in...

Questions: 15 | Attempts: 113 | Last updated: Mar 21, 2022

Sample Question
The Labrador Retriever is more commonly referred to by what shortened version of the breed's name?

Retriever

Lassie

Lab

Laddie

Interesting Dog Breed Facts: Quiz!

Explore fascinating facts about dog breeds in this engaging quiz! Learn about the protective nature of Boxers, the average weights of different breeds, and peculiarities like the 'Beardie'. Ideal for enthusiasts keen to deepen...

Questions: 15 | Attempts: 205 | Last updated: Mar 20, 2023

Sample Question
Boxers are known for their tendency to be highly protective of what?

Chickens

Small Children

Flower Gardens

Other Dogs

Fish, Amphibians, And Reptiles Quiz

Check out our amazing Fish, Amphibians, And Reptiles Quiz. The planet that we live on has so many different types of creatures. There are various types of animals that are classified into different categories based on their...

Questions: 10 | Attempts: 1142 | Last updated: Mar 25, 2025

Sample Question
What do all vertebrates have in common?

They have a backbone.

They live on land.

They have no backbone.

They live in water.

Do You Actually Know Cats-domestic Animals?

Do you actually know Cats-Domestic Animals?

Explore your knowledge of domestic cats with this engaging quiz. Test your understanding of different cat breeds, from the American Shorthair to the Birman, their unique characteristics, and breed standards. Perfect for cat...

Questions: 20 | Attempts: 379 | Last updated: Mar 21, 2022

Sample Question
What is the name of the first American-born American Shorthair registered under this breed?

Crazy Cat

Kitty Galore

Buster Brown

Joe Cat

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