Volcanism

Consider the following statements regarding Volcanic Cones

1. During volcanic eruptions, acid lava cones are formed by highly viscous lavas
2. Viscous lavas have high mobility and can travel for long distances
3. Acid lavas result in the formation of high cones with steep slopes
4. Composite cones are the highest volcanic cones

Which of the statements given above are correct ?

Which of the following are associated with composite volcanoes?

1. They result in explosive eruptions
2. They eject pyroclastic materials
3. Pyroclastic materials and ashes accumulate near the vent, forming layers

Select the correct answer using the code given below.

Which of the following statements with reference to stratovolcanoes is/are correct?

1. Stratovolcanoes are tall, steep cones built of layers of felsic lava and volcanic ash
2. They can erupt explosively as felsic lavas from stratovolcanoes hold large amounts of gas under high pressure. Select the answer

using the code given below.