c
દ્રાવણનું દળ \( = \,\,{\text{120}}\,\, + \,\,{\text{1000}}\,\, = \,\,{\text{1120}}\,\,{\text{gm}}\)

દ્રાવણનું કદ \( = \,\,\frac{{{\text{mass}}}}{{{\text{density}}}}\,\, = \,\,\frac{{1120}}{{1.15}}\,ml\,\, = \,\,\frac{{1.12}}{{1.15}}\,\) લિટર

મોલીરીટી \( = \,\,\frac{{{\text{120}}}}{{{\text{60}}\,\, \times \,\,\frac{{{\text{1}}{\text{.12}}}}{{{\text{1}}{\text{.15}}}}}}\,\, = \,\,\frac{{120\,\, \times \,\,1.15}}{{60\,\, \times \,\,1.12}}\,\,\, = \,\,2.05\)