Solution:Among the given statements, only statement 1 is correct about Stone Age in India.Stone Age in India was characterised by different periods that were identified on the basis of the type and technology of store tools. For instance, during palaeolithic age, tools were made of quartzite and sharpened by chipping technique; Mesolithic age was characterised by use of ‘microlith’ store tools; while during neolithic age tools were more specialised (like knife, dagger, etc.) and were completely or partially polished.
There was large regional variations in the type and technology of tools in different periods. For example, in the foothills of Himalayas, tools were majorly made up of pebbles, while in central India basaltic rocks were main type of stone used in making tools.
Stone Age in India did not evolve uniformly in a unilinear fashion over the sub-continent. For instance, stone tools in Shivalik hills date back to about 2 to 1.2 million years, while in Bori (Maharashtra) they data back to 1 million years back.