Question
Complete the analogy :
Ca : alkaline earth metal : : Cs : ………… .
Ca : alkaline earth metal : : Cs : ………… .
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| Group 'A' Substance | Group 'B' Refractive index | ||
| i. | Air | a. | 1.33 |
| b. | 1.46 | ||
| C. | 1.0003 |