Dams MCQ with answer and solution

Concept

The Sardar Sarovar Project on the Narmada River is designed to irrigate a large agricultural command area in Gujarat.

Formula

1 km² = 100 hectares

Step-by-step solution

1. The Sardar Sarovar Dam provides irrigation water to about 18 lakh hectares (1.8 million hectares) of land in Gujarat. 2. Convert hectares to square kilometers (km²): 18,000,000,000 m² or 18,000 km². 3. Therefore, the irrigated area in Gujarat is around 18,000 km². Answer: (C) 18000

Explanation

The Sardar Sarovar Project irrigates about 1.8 million hectares (18 lakh hectares) of land in Gujarat. Converting this area to square kilometers gives 18,000 km².

Why the other options are wrong

A: 4500 km² is much lower than the actual command area. B: 9000 km² is only half of the total planned irrigation area in Gujarat. D: 22500 km² is higher than the total command area for the state.

Shortcut

Remember that 18 lakh hectares in Gujarat equals 18,000 km² (divide hectares by 100).

Common mistake

Confusing hectares with square kilometers can lead to picking wrong values.