Which one of the following rivers in India was not crossed by Alexander and his army?

The correct answer is Hyphasis.

Key Points

Hyphasis River:

• It is the Beas river that flows from the Punjab state of India.
• The Ancient name of the Beas river was Vipasa, while the Ancient Greek name was Hyphasis.
• The river rises in the Himalayas in central Himachal Pradesh, India, and flows to the Sutlej River in the Indian state of Punjab.
• Alexandria (on the) Hyphasis was the name of the fortress on the west bank of the Hyphasis (Beas) river at which Alexander the Great stopped on 31 Aug 326 BCE in the course of his Indian campaign. Hence option 1 is correct.
• It was on the eastern border of Alexander's empire. Today, it is near Amritsar, part of Jhelum Punjab, India.
• Alexander's army, exhausted, homesick, and anxious by the prospects of having to further face large Indian armies throughout the Indo-Gangetic Plain, mutinied at the Hyphasis river and refused to march further east.

Battle of Hydaspes:

• The Battle of Hydaspes was a decisive battle fought between the armies of Alexander the Great and King Porus (also known as Poru, Paurava) in 326 BC.
• It ended in a victory for Alexander’s Macedonian Army. 
• Following the battle, King Porus was brought before Alexander and was asked how he wished to be treated, Porus replied “Treat me as a king would treat another king”. Impressed, Alexander indeed treated him like a king, allowing him to retain his lands.
• In 326 BC, their army of Alexander approached the boundaries of the Nanda Empire.
• His army, exhausted from the continuous campaigning and concerned at the prospect of facing yet another gigantic Indian army, demanded that they should return to the west.
• This happened at the Hyphasis (modern Beas).