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  - Organic Chemistry
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  - Nuclear Chemistry
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  - Polymer Chemistry
    - Polymerization 5
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  - Theoretical Chemistry
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    - Reaction Dynamics 81
    - Electronic Structure 100
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    - Spectroscopy Theory 5
  - Medicinal Chemistry
    - Drug Design 4
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    - Enzyme Inhibition 5
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  - Green Chemistry
    - Sustainable Design 4
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    - Catalysis 4
    - Biodegradable Materials 5
    - Green Synthesis 5
    - Solvent Reduction 5
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  - Materials Chemistry
    - Crystal Structure 6
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- Biology
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    - Cell Division 32
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  - Genetics
    - DNA Structure 5
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  - Evolution
    - Origin of Life 9
    - Theories of Evolution 5
    - Natural Selection 6
    - Variation 5
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    - Speciation 4
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    - Comparative Anatomy 12
    - Molecular Evidence 8
    - Human Evolution 5
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  - Ecology
    - Ecosystem 36
    - Biomes 25
    - Population Ecology 12
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    - Food Chains 16
    - Food Webs 5
    - Ecological Energy Flow 5
    - Nutrient Cycles 13
    - Biodiversity 28
    - Ecological Conservation 47
    - Habitat 5
    - Succession 5
    - Ecological Adaptation 11
    - Human Impact 5
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  - Human Anatomy & Physiology
    - Skeletal System 116
    - Muscular System 69
    - Nervous System 124
    - Endocrine System 78
    - Circulatory System 90
    - Respiratory System 44
    - Digestive System 47
    - Excretory System 10
    - Reproductive System 120
    - Immune System 11
    - Integumentary System 21
    - Sensory Organs 56
  - Botany Plant Biology
    - Plant Anatomy 38
    - Plant Morphology 5
    - Plant Physiology 69
    - Photosynthesis 53
    - Plant Reproduction 22
    - Plant Growth 5
    - Plant Hormones 5
    - Plant Taxonomy 43
    - Plant Ecology 19
    - Plant Pathology 6
    - Economic Botany 5
    - Seed Biology 5
    - Plant Genetics 6
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  - Zoology Animal Biology
    - Classification 38
    - Porifera 6
    - Cnidaria 6
    - Platyhelminthes 5
    - Nematoda 6
    - Annelida 7
    - Arthropoda 12
    - Mollusca 5
    - Echinodermata 6
    - Chordata 5
    - Fish 76
    - Amphibians 10
    - Reptiles 14
    - Birds 5
    - Mammals 106
    - Anatomy 11
    - Physiology 31
    - Reproduction 26
    - Development 6
    - Behavior 63
  - Microbiology
    - Microbial Structure 5
    - Bacteriology 33
    - Virology 34
    - Mycology 16
    - Parasitology 59
    - Microbial Genetics 5
    - Microbial Physiology 5
    - Microbial Ecology 11
    - Pathogenic Microbiology 18
    - Microbial Biotechnology 5
    - Food Microbiology 5
    - Industrial Microbiology 5
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  - Biotechnology
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    - Bioreactors 5
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    - Bioinformatics 6
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    - Proteomics 5
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  - Molecular Biology
    - Biological Biomolecules 8
    - Carbohydrates 6
    - Biochemical Lipids 9
    - Bio Proteins 5
    - Bio Enzymes 21
    - Bio Nucleic Acids 5
    - Biochemical Vitamins 5
    - Bio Minerals 6
    - Bio Metabolism 60
    - Cellular Respiration 22
    - Nitrogen Metabolism 5
    - Bio Hormones 32
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  - Immunology
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    - Antigens 6
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    - Immune Response 3
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  - Developmental Biology
    - Gametogenesis 5
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    - Metamorphosis 6
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- Earth & Space Science
  - Geology
    - Minerals 32
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    - Geological Rock Cycle 17
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Exams & Certifications

9th Grade Science Quizzes, Questions & Answers

Recent Science Quizzes

Test Your Scientific Knowledge

Questions: 9 | Attempts: 3103 | Last updated: Oct 19, 2025

Sample Question
Iron can be found in the solid as well as the liquid state.A single iron atom in the solid state is _______________that in the liquid state.

Smaller than

Heavier than

Bigger than

The same as

Biology and Chemistry - Mixed Science Quiz

Questions: 15 | Attempts: 1752 | Last updated: Mar 16, 2025

Sample Question
Choose the element that is found in all organic compounds:

Carbon

Hydrogen

Nitrogen

Oxygen

Sulphur

Learning Need Analysis (Science)

Questions: 18 | Attempts: 308 | Last updated: Mar 21, 2025

Sample Question
Long distance runners often eat bananas the night before their competitions. Which nutrient in a banana is important during the run?

Carbohydrates

Fibre

Iron

Vitamin C

World's Hardest Science Quiz You'll Ever Take!

Questions: 10 | Attempts: 92360 | Last updated: Nov 20, 2025

Sample Question
What kind of small objects compose much of the universe?

Atoms

Dark matter

Anti-matter

None of the above

Test Your Science Basics: Science Quiz Bee

Questions: 15 | Attempts: 36596 | Last updated: Nov 19, 2025

Sample Question
What is the name of the hard rock that forms from loose volcanic ash cemented together?

Tuff

Cinders

Lapilli

Volcanic bombs

Chemistry, Physics and Biology

Questions: 24 | Attempts: 5604 | Last updated: Oct 13, 2025

Sample Question
During the neutralization process of base Sodium Hydroxide (NaOH) and acid Hydrochloride (HCl), water (H2O) and what other substance is produced?

Sodium Fluoride

Sodium Chloride

Sodium Hydroxide

Calcium Sulfate

Mercury

Basic Science Test: Quiz!

Questions: 17 | Attempts: 3669 | Last updated: Mar 21, 2025

Sample Question
A helium nucleus being ejected from the nucleus of an atom can be referred to as:

Alpha Decay

Beta Decay

Gamma Decay

Fusion

Electromagnetic Radiation

PCM Test Quiz: 8th Grade!

Questions: 10 | Attempts: 4559 | Last updated: Oct 2, 2025

Sample Question
In quadrilateral ABCD, BM and DN are drawn perpendicular to AC such that BM = DN. If BR = 8cm, then BD is

4 cm

2 cm

12 cm

16 cm

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