6. A great advance in the technical knowledge of Mohenjodaro civilization is indicated by:

i) Casting and Metal alloys

ii) Potter‟s wheel

iii) Kiln-burnt brick

iv) Boring of hard substances like carnelian

Select the correct choice from the following:

1. i and ii only

2. iii and iv only

3. ii and iii only

4. i, ii, iii and iv

Correct Answer :

i, ii, iii and iv