1. The given statement is true.
Explanation: The Harappan or the Indus Valley civilisation was buried under the ground with no other evidence except for the archaeological sources that were found after the excavation of different sites. This civilisation came to an abrupt end almost 3,500 years ago.
2. The given statement is
true.
Explanation: The Indus Valley civilisation cities were well-planned. The excavation of the sites prove that the houses, streets, drainage system and sanitation were brilliantly organised.
3. The given statement is true.
Explanation: The cities of the Indus Valley civilisation were divided into two parts, i.e. the citadel and the lower town. The Granary and the Great Bath were in the citadel of Mohenjodaro. The Great Bath is one of the most impressive structure of Mohenjodaro.
4. The given statement is false.
Explanation: The script of the Harappan civilisation was pictographic. The seals had engravings of animal pictures, words and ideas. The script has not been deciphered yet.
5. The given statement is true.
Explanation: Dholavira is a Harappan city in Gujarat. It lies in the Rann of Kutch. It is also known as Kotada.