The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is [DCE 2000]

Question: The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is [DCE 2000]

(a) 6.023 x 10¹⁹

(b) 1.084 x 10¹⁸

(c) 4.84 x 10¹⁷

(d) 6.023 x 10²³

Correct Answer: (a) 6.023 x 10¹⁹

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