Maharashtra State Board Solution Chemistry Solution Chapter 1 Some Basic Concepts of Chemistry
1. Choose the most correct option. Question A.A sample of pure water, whatever the source always contains …………. by mass of oxygen and 11.1 % by mass of hydrogen.a. 88.9b. 18c. 80d. 16Answer:a. 88.9 Question B.Which of the following compounds can NOT demonstrate the law of multiple proportions?a. NO, NO2b. CO, CO2c. H2O, H2O2d. Na2S, … Read more