D performs her train journey by the shortest route from Bengaluru to N

D performs her train journey by the shortest route from Bengaluru to New Delhi. Which one of the following rivers will she not cross while performing the journey?

Narmada
Yamuna
Godavari
Krishna
This question was previously asked in
UPSC CDS-2 – 2021
The correct answer is Godavari.
The shortest railway route from Bengaluru to New Delhi typically passes through Maharashtra and Madhya Pradesh. Common major routes include Bengaluru-Secunderabad-Nagpur-Delhi or Bengaluru-Pune-Mumbai-Delhi. Both routes are likely to cross the basins of the Krishna river (near Bengaluru), the Narmada river (in Madhya Pradesh), and reach the Yamuna river (near Delhi). The main stem of the Godavari river flows significantly east through Maharashtra and Telangana. While the railway line might cross tributaries of Godavari (like Wainganga on the Secunderabad-Nagpur route), crossing the main stem of Godavari is less likely on the most direct/shortest path compared to Krishna (or its major tributary Tungabhadra), Narmada, and Yamuna.
Major railway corridors from South to North India traverse distinct river systems. Starting from South India (Bengaluru in the Krishna basin), moving North requires crossing successive river systems like Krishna, Godavari, Narmada/Tapti, and finally reaching the Indo-Gangetic plain (Yamuna/Ganga basin). The relative positions of the main stems and the railway alignment determine which rivers are directly crossed by bridges. The Godavari’s main course tends to be east of the most direct North-South railway lines in Central India.
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