$Ca^{+2}$ শনাক্তকরণে কোনটি ব্যবহৃত হয়?

A $K_{2}H_{2}Sb_{2}O_{2}$

B $(NH_{4})_{2}C_{2}O_{4 }$

C $AgNO_{3}$

D $K_{2}H_{4}Sb_{3}O_{7}$

Solution

Correct Answer: Option B

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