Question

Which of the following mineral does not contain sodium?

• A. Trona
• B. Borax
• C. Epsomite
• D. Cerrusite

Answer 1

Answer: (C), (D)

The correct options are
C Epsomite
D Cerrusite

Trona is $N{a}_3\left(C{O}_3\right)\left(HC{O}_3\right).2H_{2}O$
Borax is $N{a}_2{B}_4{O}_7.10H_{2}O$
Thus trona and borax contains sodium.
Epsomite is epsom salt or $MgS{O}_4.7H_{2}O$
Cerrusite is $PbC{O}_3$
Thus epsomite and cerussite doesn't contain sodium.