Which district of Gujarat has the largest reserve of Lignite?

The correct answer is: B. Banaskantha

Banaskantha district has the largest reserve of lignite in Gujarat. Lignite is a type of coal that is less mature than bituminous coal and anthracite coal. It is a soft, brown coal that is found in sedimentary rocks. Lignite is used to generate electricity and to produce coke, which is used in the steelmaking industry.

The other options are incorrect because:

• Kutch district does not have a large reserve of lignite.
• Sabarkantha district has a smaller reserve of lignite than Banaskantha district.
• Patan district does not have a large reserve of lignite.