Q. When iron is exposed to moist air, a reddish brown coating of hydrated Iron (III) Oxide (Fe2O3) is deposited on its surface. This reddish brown coating is called
A) dust
B) alloy
C) iron
D) rust
✔ Correct Answer: rust
Exam Insight
-
Related Questions
See also
Article
- Indian Air Force Approves Production of Astra Mark 1 Missiles
- Blackout Alert: Major Civil Defence Mock Drill Across India on 7th May
- Barometers and Its Types
- Olympic Games Paris 2024 - 6 Medals Wins India - 1 Silver and 5 Bronze
- Nano Bubble Technology Launched at National Zoological Park, Delhi
- UPSC CDS Exam Preparation Guide: Complete Syllabus, Strategy & Tips for 2025
- Double-Decker Trains in India: A New Dimension to Travel
- IndiGo Appoints Willie Walsh as New CEO – Aviation Leadership Update 2026
- Rekha Gupta Becomes Delhi’s Chief Minister: Political Journey, Party, Caste, and Key Policies
- हेनले पासपोर्ट इंडेक्स 2026: भारत की रैंक, टॉप देश और परीक्षा के लिए महत्वपूर्ण तथ्य
- India 2025 Environment Report: Mixed Outlook on Challenges, Progress, and Sustainability
- City-Killer Asteroid 2024 YR4 on Potential Collision Course: 2.3% Impact Chance in 2032, India Among Risk Zones
- India e-Visa: 11 नए Entry Ports जोड़े गए
- Sleeping Beauty (2011) – Julia Leigh’s Disturbing Vision of Power, Desire, and Surrender
- ताइवानी साहित्य के लिए ऐतिहासिक क्षण: ‘ताइवान ट्रैवलॉग’ ने जीता इंटरनेशनल बुकर प्राइज 2026
- Apple iPhone 18 Pro & iPhone 18 Pro Max: Big Upgrade Coming? Battery, Camera, Price in India, Design & Features
- Gandhi: A Life in Three Campaigns - Understanding M.J. Akbar’s Insightful Biography of the Mahatma
- SCO Meeting in Islamabad, Pakistan – October 15-16, 2024
- Bihar Famous Litti Chokha Recipe | Litti Recipe| How to Make at Home
- Sequence and Series – Important Formulas (Complete Chapter Notes)
- Donald Trump Suggests Using Economic Force to Make Canada the 51st State: Analysis
- Koya Tribe reside in Godavari Valley - Special Enforcement Bureau threaten their cherished tradition of Mahua liquor consumption
- Kailash Satyarthi’s Autobiography ‘Diyaslai’ Explored at IGNCA
- Top 50 Mainstream Films That Boldly Explore Sexuality
- India Launches Campaign for UN Security Council Seat (2028–29) with 'SHANTI' Vision
- State of the Global Climate 2023 Report – WMO
- Dhurandhar (2025): A Blockbuster That Redefined Indian Action Cinema
- The Enchanting Beauty of Meghalaya
- WBPSC Clerkship Result 2024, Cut Off and Merit List
- Top 50 Adult-Themed Movies (2000–2024)
- BSSC CGL-4 Recruitment 2025: Last Date to Apply is September 24
- Bihar state will not get special status...what will Bihar Chief Minister Nitish Kumar do?
- Why is Mars Red? New Research Reveals a Surprising Truth
- Sentinel‑6B: New International Ocean Monitoring Mission for Sea Level & Climate
- Kariba Dam Floating Solar Project 2026 – Located on Which River?
Post
Job
- Indian Air Force AFCAT 02/2026 Batch Recruitment 2026 - Apply Online
- AFCAT 01/2026 Recruitment 2025-26 | Apply Online for Indian Air Force
- Indian Air Force AFCAT 02/2026 Recruitment 2026 Apply Online - Flying & Ground Duty
- AFCAT 02/2026 Recruitment 2026 Apply Online - Indian Air Force Common Admission Test
- IBPS RRB 13th Recruitment 2024 Office Assistant, Officer Scale I, II, III Online Form 2024
- UPSSSC UP Mandi Parishad Secretary Class - III Grade - II (Sachiv Grade 2) Recruitment 2024 Apply Online for 134 Post
Info
- Air India: Official Website | Book Flights, Check-in & Manage Bookings
- Air Raids: History, Impact, and Modern Warfare
- Ultrafine Air Bubbles: Generation, Applications, and Benefits
- Air Raid Sirens: Understanding Their Meaning and Response
- Efficient Contaminant Removal: Technologies & Best Practices
- Siren Sounds: Types, Uses, and History
- Delhi
- SSB Interview: A Comprehensive Guide to Selection
- India Opens Nyoma Airbase in Ladakh
- Battle of Longewala: A David vs. Goliath Story of Indian Bravery
- Renewable Energy: Harnessing Sustainable Power for a Greener Future
- Electric Vehicles (EVs): The Future of Sustainable Transportation
- Bangkok to Phuket Travel Guide: Flights, Buses, and Must-See Attractions
📚 Explore Knowledge
Browse Articles by Category
Explore educational articles, current affairs, science, technology, history, politics, business and hundreds of learning resources organized into categories.
39
Categories
📘
International Relation
📘
World News
📘
India News
📘
Current Affairs General Awareness
📘
Entertainment
📘
Sports
📘
Movies
📘
Food
📘
Technology
📘
Games
📘
Shopping
📘
Business
📘
Health
📘
Politics
📘
History
📘
Geography
📘
Science And Technology
📘
Social
📘
Reviews (Books, Movies, Music, Etc.)
📘
Career
📘
Education
📘
Research
📘
News
📘
Blog
📘
Research Journals
📘
Documentary
📘
Cybersecurity
📘
Space
📘
Environment
📘
Medicine
📘
Economics
📘
Literature
📘
Philosophy
📘
Religion
📘
Arts And Culture
📘
Beauty
📘
Fashion
📘
Travel
📘
Other
🎯 Popular Topics
Explore the most searched educational topics.
🚀 Find Jobs by State & Department
Explore Sarkari Jobs, Admit Cards & Results easily on TutorliV
🔥 Popular Job Categories
UPSC
SSC
POLICE
DEFENCE
BANK
SPSC
JUDICIARY
AllIndia
ANDHRA PRADESH
ARUNACHAL PRADESH
ASSAM
BIHAR
CHHATTISGARH
GOA
GUJARAT
HARYANA
HIMACHAL PRADESH
JAMMU AND KASHMIR
JHARKHAND
KARNATAKA
KERALA
MADHYA PRADESH
MAHARASHTRA
MANIPUR
MEGHALAYA
MIZORAM
NAGALAND
ODISHA
PUNJAB
RAJASTHAN
SIKKIM
TAMIL NADU
TELANGANA
TRIPURA
UTTARAKHAND
UTTAR PRADESH
WEST BENGAL
ANDAMAN AND NICOBAR
CHANDIGARH
DADRA AND NAGAR HAVELI
DAMAN AND DIU
DELHI
LAKSHADWEEP
PUDUCHERRY
📚 Subject-wise MCQs Practice
Practice topic-wise MCQs for competitive exams like SSC, UPSC, Banking & more.
General Knowledge
Mathematics
Reasoning
Physics
Chemistry
English
General Science
Biology
Indian History
World History
Indian Geography
World Geography
Polity
Economics
Sociology
Political Science
Sports
Famous Places
Awards and Honours
Famous People
Day and Event
Books and Authors
Current Affairs
Computer Knowledge