Which of these minerals is NOT found in significant quantities in Gujarat?

Gold
Lignite
Bentonite
Limestone

The correct answer is (a) Gold.

Gold is a precious metal that is found in very small quantities in Gujarat. It is not a major mineral resource in the state.

Lignite is a type of coal that is found in significant quantities in Gujarat. It is used to generate electricity and produce steel.

Bentonite is a type of clay that is found in significant quantities in Gujarat. It is used in a variety of industrial applications, including drilling mud, cosmetics, and pharmaceuticals.

Limestone is a type of rock that is found in significant quantities in Gujarat. It is used in a variety of construction applications, including concrete, cement, and road construction.