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Scientific Abbreviations & Terms MCQs 2026

71 questions with detailed answers · 0 from past papers · 8 quiz batches available

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Read each question, think about the answer, then click Show Answer to reveal the correct option and explanation. Load 10 at a time so it stays manageable — perfect for one-topic study sessions on the bus or during a break.

Page 1 of 1 Questions 1–10 of 71
  1. Q1 medium

    What does the abbreviation RADAR stand for

    1. A Radio Detection And Ranging
    2. B Radiation Detection And Ranging
    3. C Rapid Aerial Detection And Reporting
    4. D Radio Amplification and Data Reporting
    💡 Explanation:

    RADAR stands for Radio Detection And Ranging, a system using radio waves to detect objects.

  2. Q2 easy

    What does the abbreviation RNA stand for

    1. A Ribonucleic acid
    2. B Riboxynucleic acid
    3. C Ribonuclear acid
    4. D Ribosenucleic acid
    💡 Explanation:

    RNA stands for Ribonucleic acid, involved in various roles in gene expression.

  3. Q3 medium

    What does the abbreviation ATP stand for

    1. A Adenosine triphosphate
    2. B Adenine triphosphate
    3. C Adenosine tetraphosphate
    4. D Adenylic triphosphate
    💡 Explanation:

    ATP stands for Adenosine triphosphate, the primary energy currency of cells.

  4. Q4 easy

    What does the abbreviation AIDS stand for

    1. A Acquired Immunodeficiency Syndrome
    2. B Acute Immune Deficiency Syndrome
    3. C Autoimmune Deficiency Syndrome
    4. D Acquired Infectious Disease Syndrome
    💡 Explanation:

    AIDS stands for Acquired Immunodeficiency Syndrome, caused by HIV infection.

  5. Q5 easy

    What does the abbreviation HIV stand for

    1. A Human Immunodeficiency Virus
    2. B Human Infectious Virus
    3. C Human Immune Virus
    4. D Human Internal Virus
    💡 Explanation:

    HIV stands for Human Immunodeficiency Virus, the virus causing AIDS.

  6. Q6 easy

    What does the abbreviation MRI stand for

    1. A Magnetic Resonance Imaging
    2. B Medical Radiation Imaging
    3. C Magnetic Radioactive Imaging
    4. D Molecular Resonance Imaging
    💡 Explanation:

    MRI stands for Magnetic Resonance Imaging, a medical imaging technique using magnetic fields.

  7. Q7 medium

    What does the abbreviation CT (as in CT scan) stand for

    1. A Computed Tomography
    2. B Complete Tomography
    3. C Cranial Tomography
    4. D Continuous Tomography
    💡 Explanation:

    CT stands for Computed Tomography, a medical imaging technique using X-rays from multiple angles.

  8. Q8 medium

    What does the abbreviation ECG (or EKG) stand for

    1. A Electrocardiogram
    2. B Electrocranial gram
    3. C Electroconductive gram
    4. D Electrocellular gram
    💡 Explanation:

    ECG (or EKG) stands for Electrocardiogram, a recording of the heart's electrical activity.

  9. Q9 medium

    What does the abbreviation EEG stand for

    1. A Electroencephalogram
    2. B Electrocardiogram (this is ECG/EKG instead)
    3. C Electrocellular gram
    4. D Electroepidermal gram
    💡 Explanation:

    EEG stands for Electroencephalogram, a recording of the brain's electrical activity.

  10. Q10 medium

    What does the abbreviation LASER stand for

    1. A Light Amplification by Stimulated Emission of Radiation
    2. B Light And Sound Emission Ray
    3. C Linear Array Sequential Energy Radiation
    4. D Long-range Amplified Signal Emission Ray
    💡 Explanation:

    LASER stands for Light Amplification by Stimulated Emission of Radiation.

  11. Q11 easy

    What does the abbreviation DNA stand for

    1. A Deoxyribonucleic acid
    2. B Dioxyribonucleic acid
    3. C Deoxyribonuclear acid
    4. D Diribonucleic acid
    💡 Explanation:

    DNA stands for Deoxyribonucleic acid, the molecule carrying genetic information.

  12. Q12 medium

    What does the abbreviation SONAR stand for

    1. A Sound Navigation And Ranging
    2. B Solar Navigation And Ranging
    3. C Sound Amplification And Ranging
    4. D Signal Navigation And Radar
    💡 Explanation:

    SONAR stands for Sound Navigation And Ranging, a system using sound waves for underwater detection.

  13. Q13 easy

    What does the abbreviation LED stand for

    1. A Light Emitting Diode
    2. B Light Energy Device
    3. C Linear Emission Diode
    4. D Light Efficient Display
    💡 Explanation:

    LED stands for Light Emitting Diode, a semiconductor device that emits light.

  14. Q14 easy

    What does the abbreviation LCD stand for

    1. A Liquid Crystal Display
    2. B Light Crystal Display
    3. C Linear Crystal Diode
    4. D Liquid Circuit Display
    💡 Explanation:

    LCD stands for Liquid Crystal Display, a common display technology.

  15. Q15 easy

    What does the abbreviation GPS stand for

    1. A Global Positioning System
    2. B Geographic Positioning System
    3. C Global Position Sensor
    4. D Ground Positioning System
    💡 Explanation:

    GPS stands for Global Positioning System, used for satellite-based navigation.

  16. Q16 easy

    What does the abbreviation WHO stand for, in the context of the global health organization

    1. A World Health Organization
    2. B World Humanitarian Organization
    3. C World Hospital Organization
    4. D World Health Office
    💡 Explanation:

    WHO stands for World Health Organization, a specialized United Nations agency for public health.

  17. Q17 easy

    What does the abbreviation NASA stand for

    1. A National Aeronautics and Space Administration
    2. B National Aerospace and Science Agency
    3. C National Astronomical and Space Association
    4. D National Air and Space Agency
    💡 Explanation:

    NASA stands for National Aeronautics and Space Administration, the US space agency.

  18. Q18 medium

    What does the abbreviation ISRO stand for, India's space agency

    1. A Indian Space Research Organisation
    2. B Indian Scientific Research Organization
    3. C International Space Research Organisation
    4. D Indian Satellite Research Office
    💡 Explanation:

    ISRO stands for Indian Space Research Organisation, India's national space agency.

  19. Q19 easy

    What does the abbreviation UV (as in UV radiation) stand for

    1. A Ultraviolet
    2. B Ultravisible
    3. C Universal Vibration
    4. D Unified Voltage
    💡 Explanation:

    UV stands for Ultraviolet, a type of electromagnetic radiation.

  20. Q20 medium

    What does the abbreviation pH stand for, the scale measuring acidity/basicity

    1. A Potential of Hydrogen
    2. B Percentage of Hydrogen
    3. C Power of Hydroxide
    4. D Positive Hydrogen
    💡 Explanation:

    pH stands for Potential of Hydrogen, the scale measuring the acidity or basicity of a solution.

  21. Q21 easy

    What does the abbreviation IR (as in IR radiation) stand for

    1. A Infrared
    2. B Internal Radiation
    3. C Ionizing Radiation (this is a broader, related but distinct concept)
    4. D Intense Radiation
    💡 Explanation:

    IR stands for Infrared, a type of electromagnetic radiation with wavelengths longer than visible light.

  22. Q22 hard

    What does the abbreviation DDT stand for, a well-known pesticide

    1. A Dichlorodiphenyltrichloroethane
    2. B Dichlorodiphenyltoluene
    3. C Dichlorophenyltrichloroethane
    4. D Dimethyldiphenyltrichloroethane
    💡 Explanation:

    DDT stands for Dichlorodiphenyltrichloroethane, a synthetic pesticide.

  23. Q23 medium

    What does the abbreviation CFC stand for, compounds historically linked to ozone depletion

    1. A Chlorofluorocarbon
    2. B Carbon Fluorine Compound
    3. C Chlorinated Fluorocarbon Chemical
    4. D Chloroform Carbon
    💡 Explanation:

    CFC stands for Chlorofluorocarbon, compounds historically used as refrigerants but linked to ozone depletion.

  24. Q24 easy

    What does the abbreviation WBC stand for, in medical/biological contexts

    1. A White Blood Cell
    2. B Whole Body Composition
    3. C Water-Based Cell
    4. D White Bone Cell
    💡 Explanation:

    WBC stands for White Blood Cell, immune cells that help fight infection.

  25. Q25 medium

    What does the abbreviation IVF stand for, a common fertility treatment

    1. A In Vitro Fertilization
    2. B Internal Viral Function (unrelated medical term)
    3. C Intravenous Fluid (an unrelated medical term)
    4. D Immune Vaccine Formula (an unrelated medical term)
    💡 Explanation:

    IVF stands for In Vitro Fertilization, a common assisted reproductive technology.

  26. Q26 easy

    What does the abbreviation RBC stand for, in medical/biological contexts

    1. A Red Blood Cell
    2. B Rapid Blood Circulation
    3. C Renal Blood Component
    4. D Red Bone Cell
    💡 Explanation:

    RBC stands for Red Blood Cell, cells responsible for oxygen transport in blood.

  27. Q27 medium

    What does the abbreviation PVC stand for, a common plastic material

    1. A Polyvinyl chloride
    2. B Polyvinyl carbonate
    3. C Polyvinyl compound
    4. D Polyvalent chloride
    💡 Explanation:

    PVC stands for Polyvinyl chloride, a widely used plastic material.

  28. Q28 medium

    What does the abbreviation DNA fingerprinting refer to, as a forensic technique

    1. A A method using unique genetic markers to identify individuals
    2. B A method of visually photographing fingerprints, unrelated to genetics
    3. C A method of analyzing blood type only
    4. D A method exclusively used for paternity testing, with no other applications
    💡 Explanation:

    DNA fingerprinting is a forensic technique using unique genetic markers found in an individual's DNA for identification purposes.

  29. Q29 easy

    What does the abbreviation BMI stand for, a measure of body weight relative to height

    1. A Body Mass Index
    2. B Basic Metabolic Index
    3. C Body Muscle Index
    4. D Balanced Mass Indicator
    💡 Explanation:

    BMI stands for Body Mass Index, a measure calculated from body weight and height.

  30. Q30 easy

    What does the abbreviation GMO stand for, referring to genetically altered organisms

    1. A Genetically Modified Organism
    2. B General Molecular Organism
    3. C Genetic Mutation Occurrence
    4. D Generated Microbial Organism
    💡 Explanation:

    GMO stands for Genetically Modified Organism, an organism whose genetic material has been altered using biotechnology.

  31. Q31 medium

    What does the abbreviation PCR stand for, a common laboratory DNA amplification technique

    1. A Polymerase Chain Reaction
    2. B Protein Chain Replication
    3. C Phosphate Compound Reaction
    4. D Photosynthetic Chemical Reaction
    💡 Explanation:

    PCR stands for Polymerase Chain Reaction, a technique used to amplify small segments of DNA.

  32. Q32 medium

    What does the abbreviation MERS stand for, referring to a related coronavirus illness

    1. A Middle East Respiratory Syndrome
    2. B Multiple Emerging Respiratory Syndrome (an incorrect variant)
    3. C Major Epidemic Respiratory Sickness (an incorrect variant)
    4. D Medical Emergency Respiratory Syndrome (an incorrect variant)
    💡 Explanation:

    MERS stands for Middle East Respiratory Syndrome, a coronavirus-caused illness first identified in that region.

  33. Q33 medium

    What does the abbreviation NIH stand for, a major US medical research institution

    1. A National Institutes of Health
    2. B National Institute of Hospitals (an incorrect variant)
    3. C National Institution for Healthcare (an incorrect variant)
    4. D National Immunity Headquarters (an incorrect variant)
    💡 Explanation:

    NIH stands for National Institutes of Health, a major US biomedical research agency.

  34. Q34 medium

    What does the abbreviation CDC stand for, a major US public health agency

    1. A Centers for Disease Control and Prevention
    2. B Central Disease Coordination (an incorrect variant)
    3. C Community Disease Center (an incorrect variant)
    4. D Clinical Diagnostic Center (an incorrect variant)
    💡 Explanation:

    CDC stands for Centers for Disease Control and Prevention, a major US public health agency.

  35. Q35 medium

    What does the abbreviation FDA stand for, a US regulatory agency

    1. A Food and Drug Administration
    2. B Federal Drug Agency (an incorrect variant)
    3. C Food Distribution Administration (an incorrect variant)
    4. D Federal Dietary Association (an incorrect variant)
    💡 Explanation:

    FDA stands for Food and Drug Administration, the US agency regulating food and pharmaceutical safety.

  36. Q36 medium

    What does the abbreviation EPA stand for, a US regulatory agency

    1. A Environmental Protection Agency
    2. B Emergency Public Administration (an incorrect variant)
    3. C Ecological Preservation Association (an incorrect variant)
    4. D Energy Production Agency (an incorrect variant)
    💡 Explanation:

    EPA stands for Environmental Protection Agency, the US agency responsible for environmental regulation.

  37. Q37 medium

    What does the abbreviation SI (as in SI units) stand for

    1. A International System of Units (from the French "Systeme International")
    2. B Scientific Instrument (an incorrect, unrelated variant)
    3. C Standard Index (an incorrect, unrelated variant)
    4. D Systematic Integration (an incorrect, unrelated variant)
    💡 Explanation:

    SI stands for the International System of Units, derived from the French "Systeme International d'Unites."

  38. Q38 medium

    What does the abbreviation STP stand for, in chemistry, referring to a reference condition

    1. A Standard Temperature and Pressure
    2. B Systematic Thermal Pressure (an incorrect variant)
    3. C Stable Thermodynamic Point (an incorrect variant)
    4. D Surface Temperature Profile (an incorrect variant)
    💡 Explanation:

    STP stands for Standard Temperature and Pressure, a reference condition used in scientific measurements.

  39. Q39 medium

    What does the abbreviation SARS stand for, referring to a respiratory illness that caused a 2003 outbreak

    1. A Severe Acute Respiratory Syndrome
    2. B Systemic Acute Respiratory Syndrome (an incorrect variant)
    3. C Severe Airborne Respiratory Sickness (an incorrect variant)
    4. D Sudden Acute Respiratory Symptom (an incorrect variant)
    💡 Explanation:

    SARS stands for Severe Acute Respiratory Syndrome, a coronavirus-caused illness that led to a notable 2003 outbreak.

  40. Q40 easy

    What does the abbreviation STD stand for, in medical contexts

    1. A Sexually Transmitted Disease
    2. B Standard Testing Device (an unrelated medical term)
    3. C Skin Tissue Damage (an unrelated medical term)
    4. D Systemic Toxic Disorder (an unrelated medical term)
    💡 Explanation:

    STD stands for Sexually Transmitted Disease, infections spread primarily through sexual contact.

  41. Q41 easy

    What does the abbreviation TB stand for, referring to a common infectious respiratory disease

    1. A Tuberculosis
    2. B Toxic Bronchitis (an unrelated, incorrect term)
    3. C Thoracic Blockage (an unrelated, incorrect term)
    4. D Transmissible Bacteria (a general, incorrect descriptive term)
    💡 Explanation:

    TB stands for Tuberculosis, a bacterial infection primarily affecting the lungs.

  42. Q42 easy

    What does the abbreviation ICU stand for, in hospital settings

    1. A Intensive Care Unit
    2. B Internal Care Unit (a similar-sounding but incorrect term)
    3. C Immediate Care Unit (a similar-sounding but incorrect term)
    4. D Isolated Care Unit (a similar-sounding but incorrect term)
    💡 Explanation:

    ICU stands for Intensive Care Unit, a specialized hospital department for critically ill patients.

  43. Q43 easy

    What does the abbreviation ER stand for, in hospital settings

    1. A Emergency Room
    2. B External Room (an unrelated, incorrect term)
    3. C Extended Recovery (an unrelated, incorrect term)
    4. D Emergency Response (a related, but not the standard hospital department term)
    💡 Explanation:

    ER stands for Emergency Room, the hospital department for urgent medical care.

  44. Q44 easy

    What does the abbreviation CPR stand for, an emergency life-saving technique

    1. A Cardiopulmonary Resuscitation
    2. B Chest Pressure Release (an unrelated, incorrect term)
    3. C Cardiac Pulse Restoration (an unrelated, incorrect term)
    4. D Circulatory Pressure Regulation (an unrelated, incorrect term)
    💡 Explanation:

    CPR stands for Cardiopulmonary Resuscitation, an emergency procedure for cardiac arrest.

  45. Q45 medium

    What does the abbreviation UNESCO stand for

    1. A United Nations Educational, Scientific and Cultural Organization
    2. B United Nations Economic and Social Council (this is actually ECOSOC, a different UN body)
    3. C United Nations Environmental and Scientific Committee (an incorrect variant)
    4. D United Nations Emergency Science Organization (an incorrect variant)
    💡 Explanation:

    UNESCO stands for United Nations Educational, Scientific and Cultural Organization.

  46. Q46 medium

    What does the abbreviation UNICEF stand for

    1. A United Nations International Children's Emergency Fund
    2. B United Nations Institute for Children's Education Fund (an incorrect variant)
    3. C United Nations International Cultural and Educational Fund (an incorrect variant)
    4. D United Nations Immunization and Children's Emergency Fund (an incorrect variant)
    💡 Explanation:

    UNICEF stands for United Nations International Children's Emergency Fund, though it is now officially named UN Children's Fund, retaining the acronym.

  47. Q47 medium

    What does the abbreviation IPCC stand for, a key body on climate science

    1. A Intergovernmental Panel on Climate Change
    2. B International Panel for Climate Control (an incorrect variant)
    3. C Institute for Planetary Climate Change (an incorrect variant)
    4. D International Program on Carbon Control (an incorrect variant)
    💡 Explanation:

    IPCC stands for Intergovernmental Panel on Climate Change, a leading international body assessing climate science.

  48. Q48 medium

    What does the abbreviation OPEC stand for, an organization related to petroleum resources

    1. A Organization of the Petroleum Exporting Countries
    2. B Organization for Petroleum Environmental Control (an incorrect variant)
    3. C Overseas Petroleum Export Corporation (an incorrect variant)
    4. D Organized Petroleum Extraction Committee (an incorrect variant)
    💡 Explanation:

    OPEC stands for Organization of the Petroleum Exporting Countries.

  49. Q49 hard

    What does the abbreviation Wi-Fi commonly refer to, though it is often mistakenly expanded as an acronym

    1. A A trademarked term for wireless networking technology (not technically a strict acronym, despite common belief)
    2. B Wireless Fidelity (a common but technically incorrect backronym)
    3. C Wide Field (an incorrect variant)
    4. D Wireless Frequency (an incorrect variant)
    💡 Explanation:

    "Wi-Fi" is actually a trademarked term for wireless networking technology, not technically a strict acronym, despite the common misconception that it stands for "Wireless Fidelity."

  50. Q50 medium

    What does the abbreviation NPK stand for, common in fertilizer labeling

    1. A Nitrogen, Phosphorus, Potassium
    2. B Nitrogen, Phosphate, Kalium (Kalium is an alternate name for potassium, but the standard is "Potassium")
    3. C Nickel, Phosphorus, Potassium (Nickel is incorrect)
    4. D Nitrogen, Phosphorus, Kalcium (incorrect spelling/element)
    💡 Explanation:

    NPK stands for Nitrogen, Phosphorus, and Potassium, the three primary nutrients highlighted in fertilizer labeling.

  51. Q51 easy

    What does the abbreviation GDP stand for, though primarily an economic term sometimes appearing in general knowledge tests

    1. A Gross Domestic Product
    2. B General Development Plan (an incorrect variant)
    3. C Global Distribution Percentage (an incorrect variant)
    4. D Government Data Processing (an incorrect variant)
    💡 Explanation:

    GDP stands for Gross Domestic Product, a key economic measurement, occasionally included in general knowledge contexts.

  52. Q52 easy

    What does the abbreviation FYI commonly stand for

    1. A For Your Information
    2. B Full Year Index (an unrelated, incorrect term)
    3. C Federal Yield Indicator (an unrelated, incorrect term)
    4. D Formal Yearly Inspection (an unrelated, incorrect term)
    💡 Explanation:

    FYI commonly stands for "For Your Information."

  53. Q53 medium

    What does the abbreviation AM (as in AM radio) stand for

    1. A Amplitude Modulation
    2. B Automatic Modulation (an incorrect variant)
    3. C Advanced Microwave (an incorrect variant)
    4. D Analog Median (an incorrect variant)
    💡 Explanation:

    AM stands for Amplitude Modulation, a radio broadcasting technique.

  54. Q54 medium

    What does the abbreviation FM (as in FM radio) stand for

    1. A Frequency Modulation
    2. B Fixed Modulation (an incorrect variant)
    3. C Full Median (an incorrect variant)
    4. D Fundamental Magnetism (an incorrect variant)
    💡 Explanation:

    FM stands for Frequency Modulation, a radio broadcasting technique.

  55. Q55 easy

    What does the abbreviation USB stand for, a common computer connection standard

    1. A Universal Serial Bus
    2. B United System Board (an incorrect variant)
    3. C Unified Signal Broadcast (an incorrect variant)
    4. D Uniform Storage Base (an incorrect variant)
    💡 Explanation:

    USB stands for Universal Serial Bus, a common standard for connecting devices to computers.

  56. Q56 easy

    What does the abbreviation CPU stand for, a core computer component

    1. A Central Processing Unit
    2. B Computer Power Unit (an incorrect variant)
    3. C Core Programming Utility (an incorrect variant)
    4. D Central Program Undertaking (an incorrect variant)
    💡 Explanation:

    CPU stands for Central Processing Unit, the primary processing component of a computer.

  57. Q57 easy

    What does the abbreviation RAM stand for, a type of computer memory

    1. A Random Access Memory
    2. B Rapid Access Module (an incorrect variant)
    3. C Read And Modify (an incorrect variant)
    4. D Recorded Analog Memory (an incorrect variant)
    💡 Explanation:

    RAM stands for Random Access Memory, a type of computer memory used for temporary data storage during operation.

  58. Q58 easy

    What does the abbreviation ROM stand for, a type of computer memory

    1. A Read-Only Memory
    2. B Random Operating Module (an incorrect variant)
    3. C Rapid Output Memory (an incorrect variant)
    4. D Recorded Operational Memory (an incorrect variant)
    💡 Explanation:

    ROM stands for Read-Only Memory, a type of computer memory that generally cannot be modified after manufacturing.

  59. Q59 medium

    What does the abbreviation HTML stand for, a foundational web technology

    1. A HyperText Markup Language
    2. B High-Tech Modern Language (an incorrect variant)
    3. C Home Text Manipulation Language (an incorrect variant)
    4. D Hyperlink Text Management Language (an incorrect variant)
    💡 Explanation:

    HTML stands for HyperText Markup Language, the standard language for creating web pages.

  60. Q60 easy

    What does the abbreviation VIP commonly stand for

    1. A Very Important Person
    2. B Verified Individual Profile (an unrelated, incorrect term)
    3. C Virtual Information Portal (an unrelated, incorrect term)
    4. D Vital Identification Protocol (an unrelated, incorrect term)
    💡 Explanation:

    VIP commonly stands for Very Important Person, though not strictly a scientific term, it appears in general knowledge contexts.

  61. Q61 easy

    What does the abbreviation ASAP commonly stand for

    1. A As Soon As Possible
    2. B Automatic System Application Process (an unrelated, incorrect term)
    3. C Advanced Scientific Analysis Protocol (an unrelated, incorrect term)
    4. D Accurate Statistical Assessment Plan (an unrelated, incorrect term)
    💡 Explanation:

    ASAP commonly stands for "As Soon As Possible."

  62. Q62 medium

    What does the abbreviation EQ (as in emotional intelligence) stand for

    1. A Emotional Quotient
    2. B Equilibrium Quality (an incorrect variant)
    3. C Educational Quotient (an incorrect variant)
    4. D Efficiency Quantity (an incorrect variant)
    💡 Explanation:

    EQ stands for Emotional Quotient, a measure of emotional intelligence.

  63. Q63 medium

    What does the abbreviation JAXA stand for, Japan's space agency

    1. A Japan Aerospace Exploration Agency
    2. B Japanese Astronomical and Exploration Agency (an incorrect variant)
    3. C Japan Advanced Exploration Association (an incorrect variant)
    4. D Japanese Aeronautics and Exploration Alliance (an incorrect variant)
    💡 Explanation:

    JAXA stands for Japan Aerospace Exploration Agency.

  64. Q64 medium

    What does the abbreviation ESA stand for, a major space agency

    1. A European Space Agency
    2. B Environmental Satellite Association (an incorrect variant)
    3. C Eurasian Space Alliance (an incorrect variant)
    4. D European Scientific Academy (an incorrect variant)
    💡 Explanation:

    ESA stands for European Space Agency.

  65. Q65 medium

    What does the abbreviation NOAA stand for, a US scientific agency focused on oceans and atmosphere

    1. A National Oceanic and Atmospheric Administration
    2. B National Ocean and Air Agency (an incorrect variant)
    3. C National Organization for Atmospheric Analysis (an incorrect variant)
    4. D National Observatory of Atmospheric Affairs (an incorrect variant)
    💡 Explanation:

    NOAA stands for National Oceanic and Atmospheric Administration, the US agency focused on oceans, weather, and climate.

  66. Q66 medium

    What does the abbreviation IUCN stand for, the organization maintaining the Red List of species

    1. A International Union for Conservation of Nature
    2. B International Union of Chemistry and Nature (an incorrect variant)
    3. C International Council for Nature (an incorrect variant)
    4. D Independent Union for Conservation Networks (an incorrect variant)
    💡 Explanation:

    IUCN stands for International Union for Conservation of Nature, the organization maintaining the global Red List of threatened species.

  67. Q67 easy

    What does the abbreviation NGO stand for, referring to independent organizational bodies

    1. A Non-Governmental Organization
    2. B National Government Office (an incorrect variant)
    3. C New Global Organization (an incorrect variant)
    4. D Non-Government Ordinance (an incorrect variant)
    💡 Explanation:

    NGO stands for Non-Governmental Organization, an independent organization not part of a government.

  68. Q68 medium

    What does the abbreviation FAO stand for, a UN specialized agency related to agriculture

    1. A Food and Agriculture Organization
    2. B Federal Agricultural Office (an incorrect variant)
    3. C Fisheries and Agricultural Organization (a close, but incorrect variant, missing the "Food" element)
    4. D Farming Assistance Organization (an incorrect variant)
    💡 Explanation:

    FAO stands for Food and Agriculture Organization, a UN specialized agency focused on defeating hunger and improving agriculture.

  69. Q69 easy

    What does the abbreviation IQ (as in IQ test) stand for

    1. A Intelligence Quotient
    2. B Individual Quality (an incorrect variant)
    3. C Instant Query (an incorrect variant)
    4. D Integrated Questionnaire (an incorrect variant)
    💡 Explanation:

    IQ stands for Intelligence Quotient, a measure derived from standardized intelligence tests.

  70. Q70 hard

    What does the abbreviation Wi-MAX refer to, a wireless communication standard

    1. A Worldwide Interoperability for Microwave Access
    2. B Wireless Maximum Access (an incorrect variant)
    3. C Wide Multi-Access Exchange (an incorrect variant)
    4. D World Media Access Extension (an incorrect variant)
    💡 Explanation:

    WiMAX stands for Worldwide Interoperability for Microwave Access, a wireless broadband communication standard.

  71. Q71 medium

    What does the abbreviation URL stand for, referring to a web address

    1. A Uniform Resource Locator
    2. B Universal Reference Link (an incorrect variant)
    3. C User Registration Locator (an incorrect variant)
    4. D Unified Retrieval Location (an incorrect variant)
    💡 Explanation:

    URL stands for Uniform Resource Locator, the address used to locate resources on the internet.

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