Solution:
It is a planned settlement which is divided into two sections, one smaller but higher ( Citadel ) and the other much larger but lower ( Lower Town ).
The Citadel owes its height to the fact that buildings were constructed on mud-brick platforms.
It was walled , which meant that it wasphysically separated from the Lower Town.
It had structures that were probably used for special public purposes.
The Lower Town was also walled.
Several buildings were built on platforms , which served as foundations . Hence, Statement 1 is correct.
Signs of planning : bricks, which, whether sun-dried or baked , were of a standardised ratio , where the length and breadth were four times and twice the height respectively .
The most distinctive features of Harappan cities was the carefully planned drainage system.
The roads and streets were laid out along an approximate “grid” pattern , intersecting at right angles.
Hence, Statement 2 is correct.
It seems that streets with drains were laid out first and then houses built along with them.
The Lower Town at Mohenjodaro provides examples of residential buildings .
The courtyard was probably the centre of activities such as cooking and weaving, particularly during hot and dry weather.
There are no windows in the walls along with the ground level .
The main entrance does not give a direct view of the interior of the courtyard.
Every house had its own bathroom paved with bricks , with drains connected through the wall to the street drains.
Hence, Statement 3 is correct.
Some houses have remains of staircases to reach a second storey or the roof.
Hence, Statement 4 is incorrect.
Many houses had wells , often in a room that could be reached from the outside and perhaps used by passers-by .
The citadel includes the warehouse: a massive structure of which the lower brick portions remain , while the upper portions , probably of wood , decayed long ago and the Great Bath.
The Great Bath was a large rectangular tank in a courtyard surrounded by a corridor on all four sides.
There were two flights of steps on the north and south leading into the tank , which was made watertight by setting bricks on edge and using a mortar of gypsum .
There were rooms on three sides , in one of which was a large well.
Water from the tank flowed into a huge drain .
Across a lane to the north lay a smaller building with eight bathrooms , four on each side of a corridor, with drains from each bathroom connecting to a drain that ran along the corridor.
It was meant for some kind of a special ritual bath.
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