Which of the following are associated with composite volcanoes? I. They result in explosive eruptions. II. They eject pyroclastic materials. III. Pyroclastic materials and ashes accumulate near the vent forming layers.

Which of the following statements is/are correct? 1. Oceanic trenches are very significant in the study of plate movements 2. Oceanic trenches are associated with active volcanoes and strong earthqua…

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 lo…

Consider the following: 1. Pyroclastic debris 2. Ash and dust 3. Nitrogen compounds 4. Sulphur compounds How many of the above are products of volcanic eruptions?

Which one of the following is formed when volcanic ash is carried by running water and is deposited as a sedimentary layer?

Which one among the following volcanic island chains is NOT associated with mid-oceanic ridge?