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JEE Main202118 Mar 2021Evening ShiftChemistrys Block ElementsActual

Match list-I with 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, the option given below :

Options

  1. Aa - iv ,   b - iii ,   c - i ,   d - ii
  2. Ba - iv , b - iii , c - ii , d - i
  3. Ca - iii ,   b - iv ,   c - v ,   d - ii
  4. Da - iii ,   b - iv ,   c - ii ,   d - v

Correct answer

B. a - iv , b - iii , c - ii , d - i

Step-by-step solution

(a) Be → it is used in the Windows of X -ray tubes (b) Mg → it is used in the Incendiary bombs and signals (c) Ca → it is used in the Extraction of metals (d) Ra → it is used in the Treatment of cancer

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