Q. Which of the following material is used in Great Bath apart from burnt bricks and mortar?
Answer: Gypsum
Notes: Great Bath complex in Mohenjo-daro integrates burnt bricks and clay mortar along with gypsum plaster for waterproofing the tank, bitumen in the brick flooring and lining of water outlets with steatite. The advanced hydraulic engineering techniques used for water drainage and sealing by Harappans is evident in the finely constructed Bath.