Match List I with List II and select the correct answer using the code given below: List I [Waterfall] A) Dudhsagar B) Duduma C) Gokak D) Jog List II [River] a) Ghatprabha b) Machhkund c) Sharavati d) Mandavi

Dudhsagar falls on the Mandovi (Mandavi) river, which rises in the Western Ghats of Karnataka and flows through Goa to the Arabian Sea, so A matches d. Duduma falls is on the Machkund river in Koraput district of Odisha, so B matches b. Gokak falls is formed by the Ghataprabha river in Belagavi district of Karnataka, so C matches a. Jog falls, one of India's highest plunge waterfalls, is on the Sharavati river in Shivamogga district, Karnataka, so D matches c.

Each wrong option breaks at least one pair. Option B gets Dudhsagar and Duduma right but wrongly puts Gokak on Sharavati and Jog on Ghataprabha. Option C gets Gokak and Jog right but places Dudhsagar on Machkund and Duduma on Mandovi. Option D misplaces all four.

The core concept is the link between a waterfall, its river and its state. This ties to the Mains theme of Western Ghats hydrology and the difference between west-flowing rivers like Mandovi and Sharavati and east-flowing rivers like Machkund.

Trap: Gokak and Jog both lie in Karnataka, so aspirants swap their rivers. Learn each waterfall with its river, not just its state.