JEE Main 2021 — s Block Elements Question with Solution
JEE Main 2021 (27 Jul Shift 2)
Question
Match List - I with List II :
| List-I | List-II | ||
| a | Li | i | photoelectric cell |
| b | Na | ii | absorbent of |
| c | K | iii | coolant in fast breeder nuclear reactor |
| d | Cs | iv | treatment of cancer |
| v | bearings for motor engines |
Choose the correct answer from the options given below:
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Show full solutionCorrect option: D
Correct answer
D
Step-by-step explanation
Li makes alloy with Lead to make white metal, bearings for motor engines. Liquid Na metal is used as coolant in fast breeder nuclear reactor. is a very absorbent of . is used in making photoelectric cell.
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This is a previous-year question from JEE Main 2021, covering the s Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.