General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
21
Hurricanes are classified by the Saffir–Simpson scale, which measures:
Answer:
Hurricanes
The scale ranks storms from Category 1 to 5. It uses wind speed as the main factor. Category 5 is catastrophic.
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# Extended Earth & Environment MCQ Bank (Extra 20)
22
The most abundant mineral in Earth’s crust is:
Answer:
Quartz
Quartz, composed of silica, is common in rocks. It is resistant to weathering. It forms sand and granite.
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23
When water changes from liquid to gas, the process is:
Answer:
Evaporation
Heat causes water molecules to escape. This forms water vapor. It is the first step in the water cycle.
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24
Which is NOT a result of deforestation?
Answer:
Better rainfall
Cutting forests reduces rainfall. It disrupts the water cycle. Other effects include erosion and biodiversity loss.
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25
Tornadoes usually form in:
Answer:
Flat inland areas
Tornadoes form in unstable air over plains. The U.S. Midwest is called Tornado Alley. Warm and cold air masses collide.
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26
The center of a hurricane is called:
Answer:
Eye
The eye is calm with clear skies. Surrounding it is the eyewall, the most violent part. It is characteristic of cyclones.
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27
Hurricanes are also known as:
Answer:
re also known as:
The same storm has different names regionally. Atlantic = hurricanes, Pacific = typhoons, Indian Ocean = cyclones. They are tropical storms.
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28
Downward movement of soil and rocks on slopes is called:
Answer:
Landslide
Landslides occur after heavy rains or quakes. They can bury settlements quickly. Deforestation worsens them.
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29
The most active volcanoes are found:
Answer:
ctive volcanoes are found:
Boundaries between plates are weak. Magma escapes through cracks. Examples include the Pacific Ring of Fire.
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30
Volcanic eruptions usually result from:
Answer:
Plate tectonics
Magma rises at plate boundaries. Pressure release causes eruptions. Subduction and rifting zones are common sites.
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