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RAS — Earthquakes & Volcanoes MCQs

Practice 20 free earthquakes & volcanoes multiple choice questions for RAS exam. Instant answers with explanations in Hindi and English.

Master Earthquakes & Volcanoes under World Geography for RAS with our curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English anytime.

RAS — World Geography — Earthquakes & Volcanoes

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

Which of the following elements is primarily responsible for increasing the viscosity of magma?

Question 2 of 20

A comprehensive, master-level understanding of earthquakes and volcanism requires a firm grasp of seismic wave mechanics, the geomorphic evolution of the lithosphere, and which other foundational geographical concept?

Question 3 of 20

Which of the following locations marks the exact point where Primary waves (P-waves) undergo significant refraction (bending) within the Earth's interior?

Question 4 of 20

The magnesium, potassium, and iron-rich soils directly derived from volcanic rocks are highly beneficial for specific types of agriculture. In regions like the Deccan Plateau, these soils are exceptionally suited for the cultivation of:

Question 5 of 20

Consider the following characteristics: 1. Built from alternating layers of viscous lava, ash, and pyroclastic material. 2. Steep, symmetrical cones. 3. Highly explosive eruptions. Which geological structure exhibits all of the above features?

Question 6 of 20

Which of the following is an extrusive geothermal feature characterized by the intermittent discharge of naturally heated groundwater and steam?

Question 7 of 20

Match List-I (Tectonic Boundary) with List-II (Earthquake Characteristic): List-I 1. Convergent Boundary 2. Divergent Boundary 3. Transform Boundary List-II A. Plates slide horizontally, friction causes sudden jolts B. Plates pull apart, producing frequent but smaller shallow quakes C. Subduction creates immense pressure, leading to the world's largest quakes Choose the correct matching:

Question 8 of 20

The volcanic activity observed in regions like Italy and parts of East Africa belongs to the Mediterranean-Himalayan Belt. This activity is fundamentally related to:

Question 9 of 20

If a modern, massive hydroelectric dam project induces localized earthquakes in a historically seismically quiet zone, what specific term defines this phenomenon?

Question 10 of 20

Which of the following seismic belts is responsible for the highest concentration of global seismic activity, accounting for 81% of the world's earthquakes?

Question 11 of 20

Volcanism along the Mid-Atlantic Ridge is primarily characterized by:

Question 12 of 20

The spatial distance measured vertically between the underground origin point of an earthquake and the point directly above it on the Earth's surface is known as:

Question 13 of 20

Which of the following pieces of scientific evidence was definitively used by geologists to conclude that the Earth's outer core must be in a liquid state?

Question 14 of 20

Which of the following describes the precise geographic trajectory of the Mid-Continental (Alpide) seismic belt?

Question 15 of 20

Match List-I (Term) with List-II (Definition) and select the correct answer: List-I 1. Focus 2. Epicenter 3. Focal Depth List-II a. The point on the surface directly above the origin b. The distance between the origin and the surface c. The exact subterranean origin point of rupture

Question 16 of 20

Which of the following describes the mechanism behind earthquakes resulting from Volcanic Eruptions?

Question 17 of 20

Match List I (Volcano Type) with List II (Key Feature/Example) and select the correct answer: List I: a. Shield Volcano b. Composite Volcano c. Flood Basalt d. Caldera List II: 1. Deccan Traps 2. Hawaiian Islands 3. Magma chamber collapses, leaving circular depression 4. Mt. St. Helens

Question 18 of 20

Assertion (A): P-waves are always recorded by seismographs before S-waves from the same earthquake. Reason (R): P-waves are compressional waves that move faster through rocky mediums than transverse shear waves. Select the correct option:

Question 19 of 20

Consider the following statements regarding the impact of different seismic waves: 1. P-waves are responsible for the minimal initial tremors felt during an earthquake. 2. S-waves have the highest amplitude and are universally the most destructive waves. Which of the statement(s) given above is/are correct?

Question 20 of 20

What differentiates a caldera from a standard volcanic crater?

More World Geography Subtopics

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