Which of the following statement is correct ? a)Ionisation energiest of elements decrease along the period. b)Ionisation energies of the IIA group elements are less than that of the corresponding III A group elements. c)Ionisation energies of group 15 elements are less than that of the corresponding group 16 elements. d)Ionisation energy of Ga is greater than Al.

Options

A. E.coli gram –ve bacterium while Rhizobium japonicum is gram +ve bacterium
B. Both E.coli and Rhizobium japonicum are gram +ve
C. Both E.coli and Rhizobium japonicum are gram –ve
D. E.coli is gram +ve, Rhizobium japonicum is gram –ve

Answer

C

Explanation

Both E. coli and Rhizobium are the example of Gram –ve bacteria that lose the crystal violet stain due to the presence of liposaccharide layer in gram –ve bacteria and have a cell wall composed of a thin layer of peptidoglycan.