MCQ
Which lanthanide compound is used as a pigment?
- ACeO2
- BCe(OH)3
- CLu(OH)3$
- DTb(OH)3
Explanation:
Ceria or cerium oxide, CeO2, a lanthanide compound is used as a pigment and as a polishing agent for glass.
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| Column I | Column II |
| (a) Non ideal solution with positive deviation | (i) $H _2 O (57 \%)+ HI (43 \%)$ |
| (b) Maximum boiling azeotrope | (ii) $CHCl _3+\left( CH _3\right)_2 CO$ |
| (c) Non ideal solution with negative deviation | (iii) $C _2 H _5 OH (95.4 \%)+ H _2 O (4.6 \%)$ |
| (d) Minimum boiling azeotrope | (iv) $CCl _4+ C _6 H _5 CH _3$ |