Assertion (A): Steam is the most abundant gas that comes out of a volcano.

Reason (R): Violent eruptions, known as bombs, eject materials varying in size.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

Which of the following is NOT a constructive effect of volcanoes?

1. Landform formation
2. Tsunami
3. Geothermal energy
4. Tourism

Mt. Vesuvius, Mt. Etna are located in the:

1. Circum Pacific belt
2. Mid-world Mountain Belt
3. Pacific Ring of fire
4. None of the above

……………… are also known as Thermal Springs.

1. Hot springs
2. Geysers
3. Volcano
4. Caldera