Earthquakes & Volcanoes MCQs for Rajasthan SI
Practice 20 free Earthquakes & Volcanoes questions under World Geography — Geography.
Strengthen your Earthquakes & Volcanoes knowledge for Rajasthan SI with curated MCQs. Switch between Hindi and English anytime.
Rajasthan SI — World Geography — Earthquakes & Volcanoes
20 Questions • Instant results & explanations • Hindi & English
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Question 1 of 20
What are intrusive (plutonic) landforms?
Question 2 of 20
Assertion (A): Earthquakes generated at the Mid-Atlantic Ridge are generally characterized by massive destruction and very deep focal points. Reason (R): The Mid-Atlantic Ridge is a divergent boundary where tectonic plates move apart, allowing underlying magma to rise and release tension steadily.
Question 3 of 20
What is the primary mechanical cause of the 'Shoaling' effect when a tsunami reaches a coastline?
Question 4 of 20
The weathering of basaltic volcanic rocks produces extremely fertile soils, such as the Regur Soil in India. This soil is particularly rich in which of the following combinations of elements?
Question 5 of 20
What is the primary trigger for the formation of a tsunami?
Question 6 of 20
Which specific mechanism triggers the formation of magma at divergent tectonic boundaries like the Mid-Atlantic Ridge?
Question 7 of 20
Which of the following statements uniquely identifies the difference between the measurement methodologies of the Richter and Mercalli scales?
Question 8 of 20
Consider the mathematical formula for the velocity of a Primary wave: Vp = √((K + 4/3μ) / ρ). In this equation, what does the symbol 'K' specifically represent?
Question 9 of 20
Match the seismic measurement scales in List-I with their fundamental characteristics in List-II: List-I A. Richter Scale B. Modified Mercalli Scale List-II 1. Measures the effects or damage at a specific location 2. Based on a base-10 logarithmic mathematical structure 3. Uses Roman numerals from I to XII 4. Remains an absolute value for a single earthquake regardless of the measurement location Codes:
Question 10 of 20
According to seismological wave mechanics, what is the formula that determines the velocity of an S-wave (Vs)?
Question 11 of 20
While typical surface ocean waves are primarily driven by atmospheric winds, tsunamis possess a fundamentally different genesis. Which of the following defines the definitive trigger mechanism for a tsunami?
Question 12 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 13 of 20
Consider the following statements: 1. The Mid-Atlantic Ridge represents a convergent plate boundary responsible for deep-trench seismicity. 2. The Circum-Pacific Belt accounts for more than three-quarters of all global earthquakes. 3. The Alpide Belt extends from the Mediterranean Sea through the Himalayas to Indonesia. Which of the statements given above is/are incorrect?
Question 14 of 20
Which specific geological process is directly responsible for exposing deep-seated mineral deposits during an earthquake?
Question 15 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 16 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 17 of 20
Consider the following geological features: 1. Deep oceanic trenches 2. Convergent plate boundaries 3. Frequent shallow-focus tremors from magma upwelling Which of the above features are characteristic of the Circum-Pacific Belt?
Question 18 of 20
Consider the following statement regarding Decompression Melting: 'It allows underlying mantle rock to melt into magma strictly due to an immense localized increase in temperature.' Is this statement correct?
Question 19 of 20
What defines a volcano's crater?
Question 20 of 20