Select the correct combination from the given options.

PYQ SSC JE (Junior Engineer) 2022

Select the correct combination from the given options.

  1. A.

    Rhizobium – Pathogenic bacteria

  2. B.

    Rhizobium – Symbiotic bacteria

  3. C.

    E. coli – Bioleaching

  4. D.

    Clostridium – Symbiotic bacteria

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