English vocabulary plays an important role in scoring well in TNPSC Group 2 and other competitive exams. This One Word Substitution quiz gives you a chance to practice commonly asked questions in a simple and exam-oriented way. Whether you’re revising or testing your preparation, these questions will help you become more confident with TNPSC One Word Substitution topics.
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Detailed Explanations – TNPSC One Word Substitution Test 6
Learning One Word Substitution is more than just memorizing words—it’s about understanding how a single word can replace an entire phrase without changing its meaning. In TNPSC exams, these questions are designed to test both vocabulary and comprehension. As you complete this TNPSC One Word Substitution quiz, focus on the explanations and try using the new words in your daily reading to remember them more easily. Reading this detailed Explanations helpful for you to score more in group exams.
1. Choose the one word for “A person who studies blood and its diseases”:
Answer & Meaning:
A Hematologist is a medical specialist who studies blood, blood-forming organs, and blood-related diseases such as anemia, leukemia, and leukemia. Hematology helps diagnose and treat disorders related to blood and the circulatory system.
Why Other Options Are Wrong?
- Cardiologist – A doctor who specializes in diseases of the heart and blood vessels.
- Pathologist – A specialist who studies diseases by examining tissues, organs, and body fluids.
- Neurologist – A doctor who treats disorders of the brain, spinal cord, and nervous system.
Example:
A hematologist treats patients suffering from blood disorders such as anemia, leukemia, and hemophilia.
Exam Tip:
Remember “Hema = Blood”. Therefore, a Hematologist is a specialist who studies blood and its diseases.
✅ Answer: B. Hematologist
2. Choose the one word for “A person who is unable to stop talking”:
Answer & Meaning:
A Garrulous person talks excessively and continuously. The word is used to describe someone who is overly talkative or chatty.
Why Other Options Are Wrong?
- Taciturn – A person who speaks very little and is naturally quiet.
- Reserved – A person who is restrained and does not express feelings openly.
- Humble – A person who is modest and not proud.
Example:
The garrulous passenger kept talking throughout the entire train journey.
Exam Tip:
Remember: “Garrulous = Great Talker”. A garrulous person talks more than necessary.
✅ Answer: C. Garrulous
3. Choose the one word for “A person who studies the weather forecast”:
Answer & Meaning:
A Climatologist is a scientist who studies climate patterns, long-term weather conditions, and changes in the Earth’s atmosphere over extended periods.
Why Other Options Are Wrong?
- Meteorologist – A scientist who studies day-to-day weather conditions and forecasting.
- Forecaster – A person who predicts future events or trends.
- Analyst – A person who examines and interprets data.
Example:
A climatologist studies rainfall patterns and temperature changes to understand climate change.
Exam Tip:
Remember: Climate = Long-term weather patterns, whereas Meteorology = Daily weather forecasting.
✅ Answer: A. Climatologist
4. Choose the one word for “A person who examines dead bodies to determine the cause of death”:
Answer & Meaning:
A Coroner is an official who investigates deaths, especially sudden, unexplained, or suspicious deaths, to determine their cause.
Why Other Options Are Wrong?
- Surgeon – A doctor who performs operations.
- Physician – A doctor who diagnoses and treats illnesses.
- Pathologist – A specialist who studies diseases and examines tissues and body fluids.
Example:
The coroner conducted an investigation to determine the cause of the accidental death.
Exam Tip:
Remember: A Coroner investigates the cause of death, especially in unusual circumstances.
✅ Answer: C. Coroner
5. Choose the one word for “A person who studies fungi”:
Answer & Meaning:
A Mycologist is a scientist who studies fungi, including mushrooms, molds, yeasts, and other fungal organisms.
Why Other Options Are Wrong?
- Botanist – A scientist who studies plants.
- Ecologist – A scientist who studies organisms and their environment.
- Biologist – A scientist who studies living organisms in general.
Example:
A mycologist may research medicinal mushrooms and fungal diseases affecting crops.
Exam Tip:
Remember: “Myco” means fungus, so a Mycologist studies fungi.
✅ Answer: A. Mycologist
6. Choose the one word for “A person who repairs watches and clocks”:
Answer & Meaning:
A Horologist is a person who studies, designs, repairs, and maintains clocks, watches, and other timekeeping devices.
Why Other Options Are Wrong?
- Mechanic – A person who repairs machines and vehicles.
- Artisan – A skilled craft worker.
- Goldsmith – A person who makes or repairs items made of gold.
Example:
The horologist carefully repaired the antique grandfather clock.
Exam Tip:
Remember: Horology = Study of time and timekeeping instruments.
✅ Answer: C. Horologist
7. Choose the one word for “A person who hates knowledge and learning”:
Answer & Meaning:
A Misologist is a person who dislikes learning, reasoning, knowledge, or intellectual discussions.
Why Other Options Are Wrong?
- Scholar – A person who is highly educated or learned.
- Critic – A person who evaluates or judges something.
- Cynic – A person who distrusts the motives of others.
Example:
A misologist avoids intellectual debates and dislikes academic discussions.
Exam Tip:
Remember: “Miso” means hate and “logy” refers to study or reasoning.
✅ Answer: B. Misologist
8. Choose the one word for “A person who studies sound”:
Answer & Meaning:
An Acoustician is a scientist who studies sound, vibration, and their behavior in different environments.
Why Other Options Are Wrong?
- Musician – A person who performs or composes music.
- Composer – A person who writes music.
- Engineer – A person who designs and develops systems and structures.
Example:
An acoustician may help design concert halls to improve sound quality.
Exam Tip:
Remember: Acoustics = Science of sound.
✅ Answer: A. Acoustician
9. Choose the one word for “A person who prepares legal documents”:
Answer & Meaning:
A Notary is a legally authorized person who certifies, witnesses, and authenticates legal documents and signatures.
Why Other Options Are Wrong?
- Advocate – A lawyer who represents clients in court.
- Judge – A person who presides over legal proceedings.
- Magistrate – A judicial officer with limited authority.
Example:
The property agreement was verified and signed before a notary.
Exam Tip:
Remember: A Notary verifies and authenticates legal documents.
✅ Answer: C. Notary
10. Choose the one word for “A person who studies population statistics”:
Answer & Meaning:
A Demographer is a specialist who studies population size, growth, distribution, and statistical trends.
Why Other Options Are Wrong?
- Economist – A person who studies economic systems and markets.
- Sociologist – A person who studies society and social behavior.
- Statistician – A person who analyzes numerical data in general.
Example:
Demographers analyze census data to study population growth and migration patterns.
Exam Tip:
Remember: Demography = Study of populations and their statistics.
✅ Answer: A. Demographer
11. Choose the one word for “A person who dislikes human society”:
Answer & Meaning:
A Misanthrope is a person who dislikes, distrusts, or avoids human society and social interactions.
Why Other Options Are Wrong?
- Introvert – A person who prefers solitude but does not necessarily dislike others.
- Recluse – A person who lives in seclusion.
- Hermit – A person who lives alone, often for religious or personal reasons.
Example:
The old man became a misanthrope after years of disappointment with society.
Exam Tip:
Remember: “Misan” = hate + “Anthrope” = human. A misanthrope dislikes mankind.
✅ Answer: C. Misanthrope
12. Choose the one word for “A person who studies coins and medals”:
Answer & Meaning:
A Numismatist is a person who studies or collects coins, medals, currency, and their historical significance.
Why Other Options Are Wrong?
- Collector – A person who collects various items.
- Historian – A person who studies historical events.
- Archaeologist – A person who studies ancient civilizations through artifacts.
Example:
A numismatist may study ancient Indian coins to understand historical trade and culture.
Exam Tip:
Remember: Numismatics = Study of coins and currency.
✅ Answer: B. Numismatist
13. Choose the one word for “A person who studies the relationship between organisms”:
Answer & Meaning:
An Ecologist is a scientist who studies the interactions among living organisms and their environment.
Why Other Options Are Wrong?
- Taxonomist – A scientist who classifies organisms.
- Zoologist – A scientist who studies animals.
- Geneticist – A scientist who studies genes and heredity.
Example:
An ecologist studies how plants, animals, and humans interact within ecosystems.
Exam Tip:
Remember: Ecology = Study of organisms and their environment.
✅ Answer: B. Ecologist
14. Choose the one word for “A person who designs machines”:
Answer & Meaning:
An Engineer is a professional who applies scientific and mathematical principles to design, build, and improve machines and systems.
Why Other Options Are Wrong?
- Technician – A person who operates or repairs equipment.
- Mechanic – A person who repairs machines.
- Architect – A person who designs buildings and structures.
Example:
Mechanical engineers design engines, vehicles, and industrial machinery.
Exam Tip:
Remember: Engineers design; mechanics repair.
✅ Answer: C. Engineer
15. Choose the one word for “A person who studies heredity”:
Answer & Meaning:
A Geneticist is a scientist who studies genes, heredity, DNA, and the transmission of traits from one generation to another.
Why Other Options Are Wrong?
- Biologist – A scientist who studies living organisms in general.
- Botanist – A scientist who studies plants.
- Anatomist – A scientist who studies body structure.
Example:
A geneticist may study inherited diseases and genetic disorders.
Exam Tip:
Remember: Genetics = Study of heredity and genes.
✅ Answer: B. Geneticist
16. Choose the one word for “A person who writes plays”:
Answer & Meaning:
A Dramatist is a writer who creates plays and scripts intended for theatrical performance.
Why Other Options Are Wrong?
- Novelist – A writer of novels.
- Poet – A writer of poems.
- Essayist – A writer of essays.
Example:
William Shakespeare is one of the world’s most famous dramatists.
Exam Tip:
Remember: Drama = Stage play, so a dramatist writes plays.
✅ Answer: C. Dramatist
17. Choose the one word for “A person who studies the structure of the human body”:
Answer & Meaning:
An Anatomist is a scientist who studies the structure and organization of the human body and other living organisms.
Why Other Options Are Wrong?
- Physician – A doctor who treats diseases.
- Surgeon – A doctor who performs surgeries.
- Biologist – A scientist who studies living organisms generally.
Example:
An anatomist studies bones, muscles, organs, and body systems.
Exam Tip:
Remember: Anatomy = Structure, while Physiology = Function.
✅ Answer: A. Anatomist
18. Choose the one word for “A person who studies old records and documents”:
Answer & Meaning:
An Archivist is a professional who preserves, organizes, and studies historical records and documents.
Why Other Options Are Wrong?
- Librarian – A person who manages books and library resources.
- Historian – A person who studies and writes about history.
- Clerk – A person who performs administrative or office duties.
Example:
An archivist preserves ancient government records and historical manuscripts.
Exam Tip:
Remember: Archives contain historical records, and an archivist manages them.
✅ Answer: A. Archivist
19. Choose the one word for “A person who studies teeth and oral health”:
Answer & Meaning:
A Dentist is a healthcare professional who specializes in diagnosing, preventing, and treating diseases of the teeth, gums, and mouth.
Why Other Options Are Wrong?
- Surgeon – A doctor who performs operations.
- Physician – A doctor who treats general illnesses.
- Orthopedist – A doctor who treats bone and joint disorders.
Example:
A dentist treats tooth decay, gum diseases, and performs dental procedures.
Exam Tip:
Remember: Dentistry deals with oral and dental health.
✅ Answer: B. Dentist
20. Choose the one word for “A person who studies bones”:
Answer & Meaning:
An Osteologist is a scientist who studies bones, skeletal structures, and their development.
Why Other Options Are Wrong?
- Physiologist – A scientist who studies body functions.
- Anatomist – A scientist who studies body structure in general.
- Neurologist – A doctor who specializes in the nervous system.
Example:
An osteologist may study human skeletons to understand growth, disease, and evolution.
Exam Tip:
Remember: “Osteo” means bone, as in osteoporosis and osteology.
✅ Answer: A. Osteologist
Further Reading:
Expand your vocabulary with trusted English language resources. Reading word meanings along with examples is one of the easiest ways to improve your performance in TNPSC Group 2 and other competitive exams.
Authority Reference:
Oxford Learner’s Dictionaries – One Word Meanings and Usage
Practice is the key to mastering One Word Substitution questions. We hope this TNPSC One Word Substitution quiz helped you revise important vocabulary for TNPSC Group 2 preparation. Keep attempting more quizzes, review the explanations carefully, and build a stronger English vocabulary one word at a time.