Directions : The following 05 (Five) items consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the answers to these items using the code given below :
Code :
- Both the Statements are individually true and Statement II is the correct explanation of Statement I.
- Both the Statements are individually true but Statement II is not the correct explanation of Statement I.
- Statement I is true but Statement II is false.
- Statement I is false but Statement II is true.
53.
Statement I: Volcanic eruption is accompanied by earthquakes.
Statement II: Volcanoes erupt water vapours and dust particles in the atmosphere.
[amp_mcq option1=”Both the Statements are individually true and Statement II is the correct explanation of Statement I.” option2=”Both the Statements are individually true but Statement II is not the correct explanation of Statement I.” option3=”Statement I is true but Statement II is false.” option4=”Statement I is false but Statement II is true.” correct=”option2″]
This question was previously asked in
UPSC NDA-1 – 2016
Statement II is also true. Volcanoes erupt various materials including gases (primarily water vapour), ash, dust particles, lava, and rock fragments.
However, Statement II (what volcanoes erupt) does not explain *why* volcanic eruptions are accompanied by earthquakes (Statement I). The earthquakes are caused by processes happening *before* or *during* the eruption related to magma dynamics and rock mechanics, not by the mere expulsion of water vapour and dust.