MCQ
Dipole moments of given compound will be


- ✓$(A) = 6.87\,D, (B) = 4.11\, D$
- B$(A) = 4.11 \,D, (B) = 6.87\, D$
- C$(A) = 4.11\, D, (B) = 4.11\, D$
- D$(A) = 6.87 \,D, (B) = 6.87\, D$


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$(A)$ Hydrated $Al _2 O _3$ precipitates, when $CO _2$ is bubbled through a solution of sodium aluminate.
$(B)$ Addition of $Na _3 AlF _6$ lowers the melting point of alumina.
$(C)$ $CO _2$ is evolved at the anode during electrolysis.
$(D)$ The cathode is a steel vessel with a lining of carbon.
