A. Limestone and soda ash
B. Soda ash and silica
C. Silica and limestone
D. Limestone, silica, and soda ash.
Free MCQs for FPSC, NTS, PPSC, PMS, CSS & All Pakistan Exams 2026
A. Limestone and soda ash
B. Soda ash and silica
C. Silica and limestone
D. Limestone, silica, and soda ash.