JEE Main 2021 — S Block Elements Question with Solution
From: JEE Main 2021 (Online) 18th March Evening Shift
Question
Match List - I with List - II :
Choose the most appropriate answer from the option given below :
| List - I | List - II | ||
|---|---|---|---|
| (a) | Be | (i) | treatment of cancer |
| (b) | Mg | (ii) | extraction of metals |
| (c) | Ca | (iii) | incendiary bombs and signals |
| (d) | Ra | (iv) | windows of X-ray tubes |
| (v) | bearings for motor engines |
Choose the most appropriate answer from the option given below :
Choose an option
Show full solutionCorrect option: D
Correct answer
D(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
Step-by-step explanation
Beryllium is used in the manufacture of alloys. Metallic beryllium is used for making windows of
X-ray tubes. Radium salts are used in radiotherapy, for example, in the treatment of cancer. Magnesium
(powder and ribbon) is used in flash powders and bulbs, incendiary bombs and signals. Calcium is used
in the extraction of metals from oxides which are difficult to reduce with carbon.
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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.