Multiple choice general knowledge science & technology

Chemical formula for water is

  1. NaA1O2

  2. H2O

  3. Al2O3

  4. CaSiO3
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B Correct answer
Explanation

Water consists of two hydrogen atoms bonded to one oxygen atom, giving it the chemical formula H2O. NaAlO2 is sodium aluminate, Al2O3 is aluminum oxide, and CaSiO3 is calcium silicate.

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