General — Easy JEE chemistry MCQ
Calamine, malachite, magnetite and cryolite, respectively, are
- A. $\mathrm{ZnSO}_{4}, \mathrm{CuCO}_{3}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{AlF}_{3}$
- B. $\mathrm{ZnSO}_{4}, \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{Fe}_{3} \mathrm{O}_{4}, \mathrm{Na}_{3} \mathrm{AlF}_{6}$
- C. $\mathrm{ZnCO}_{3}, \mathrm{CuCO}_{3} \cdot \mathrm{Cu}(\mathrm{OH})_{2}, \mathrm{Fe}_{3} \mathrm{O}_{4}, \mathrm{Na}_{3} \mathrm{AlF}_{6}$
- D. $\mathrm{ZnCO}_{3}, \mathrm{CuCO}_{3}, \mathrm{Fe}_{2} \mathrm{O}_{3}, \mathrm{Na}_{3} \mathrm{AlF}_{6}$
Solution
The correct option is **C**.