Consider the following statements 1 Earthquakes are only generated by sliding of rocks along fault l...........

Explanation:

1 and 2 only

"Earthquakes are only generated by the sliding of rocks along a fault line." - This statement is incorrect. While the sliding of rocks along a fault line (fault movement) is one of the common causes of earthquakes, earthquakes can also result from volcanic activity, landslides, and other processes.

"The intensity of an earthquake is measured on the Richter Scale." - This statement is incorrect. The intensity of an earthquake is not measured on the Richter Scale. The Richter Scale is used to measure the magnitude of an earthquake, which represents the energy released at the source. The intensity of an earthquake, on the other hand, is often measured using the Modified Mercalli Intensity (MMI) scale, which describes the effects of an earthquake at specific locations.

"All natural earthquakes occur in the lithosphere." - This statement is correct. Earthquakes primarily occur in the Earth's lithosphere, which includes the rigid outer layer of the Earth's crust.