A) 1018 bacteria
B) 1010 bacteria
C) 106 bacteria
D) 1012 bacteria
Correct Answer: D
Solution :
Since 1 ml volume of pipette \[={{10}^{6}}\] cubic metre. Diameter of 1 bacterium \[={{10}^{3}}mm={{10}^{6}}metre\] Hence the volume of 1 bacterium \[={{10}^{6}}\times {{10}^{6}}\times {{10}^{6}}={{10}^{18}}\] Therefore number of bacterium \[=\frac{{{10}^{-6}}}{{{10}^{-18}}}={{10}^{-6+18}}={{10}^{12}}.\]
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