Question

Direction: It consists of two statements, one labelled as ‘Statement (I)’ and the others as ‘Statement (II)’. You are to examine these two statements carefully and select the answer using the codes given below:

Statement (I): Volcanic eruption is often accompanied by earthquakes.

Statement (II): Volcanoes erupt dust particles in the atmosphere. 
1. Both Statement (I) and Statement (II) individually true and Statement (II) is the correct explanation of Statement (I)
2. Both statement (I) and Statement (II) are individually true, but Statement (II) is not the correct explanation of Statement (I)
3. Statement (I) is true, but Statement (II) is false
4. Statement (I) is false, but Statement (II) is true

Answer 1

Correct Answer - Option 2 : Both statement (I) and Statement (II) are individually true, but Statement (II) is not the correct explanation of Statement (I)

Volcano:

• A volcano is an opening in the earth’s crust through which gases, molten rocks lava, ash, steam, dust particles etc. are emitted outward in the course of an eruption. 
• Such vents or openings occur in those parts of the earth’s crust where the rock strata are relatively weak.
• Volcanic activity is closely connected with crystal disturbances, particularly where there are zone weakness due to deep faulting or mountain folding.
• Major earthquakes usually caused by movement along faults.
• This is because the molten magma float over the asthenosphere that forces its way into the planes of weakness of the crust to escape

 

​Therefore, both the statements are individually true but Statement II is not the correct explanation of Statement I.