Interview questions on "GIS in Flood Mapping"

Twenty MCQ which is common in not only interviews but also in different competetive examinations including GATE

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🌊 GIS in Flood Mapping – MCQs with Answers

🧭 Fundamentals & Concepts

1. What is the primary role of GIS in flood mapping?

   1. Predicting earthquakes

   2. Mapping flood-prone areas ✅

   3. Measuring air pollution

   4. Monitoring traffic flow

2. Which type of data is most commonly used to model terrain in flood mapping?

   1. Vector data

   2. Tabular data

   3. Digital Elevation Model (DEM) ✅

   4. Text data

3. Which GIS tool is used to determine the direction of water flow?

   1. Clip

   2. Flow Direction ✅

   3. Buffer

   4. Merge

4. What does inundation mapping show?

   1. Soil fertility

   2. Areas affected by flooding ✅

   3. Vegetation health

   4. Groundwater levels

5. Which of the following is a key input for flood modeling in GIS?

   1. Population density

   2. Land use/land cover ✅

   3. Road networks

   4. Temperature data

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🛰️ Remote Sensing & Data Sources

6. Which satellite sensor is commonly used for flood detection?

   1. MODIS ✅

   2. GPS

   3. GOES

   4. IKONOS

7. Which type of remote sensing is most effective during cloudy flood events?

   1. Optical

   2. Microwave (SAR) ✅

   3. Thermal

   4. Panchromatic

8. Which of the following is a freely available source of satellite imagery for flood mapping?

   1. QuickBird

   2. Landsat ✅

   3. WorldView

   4. GeoEye

9. What is the advantage of using SAR data in flood mapping?

   1. High color resolution

   2. Penetrates cloud cover and detects water surfaces ✅

   3. Measures temperature

   4. Detects vegetation only

10. Which index is used to detect water bodies in satellite imagery?

    1. NDVI

    2. NDWI ✅

    3. SAVI

    4. TWI