Question: The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of [AMU 1982, 92]
(a) Constant proportions
(b) Conservation of mass
(c) Multiple proportions
(d) Reciprocal proportions
Correct Answer: (a) Constant proportions
![Question: The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of [AMU 1982, 92] (a) Constant proportions (b) Conservation of mass (c) Multiple proportions (d) Reciprocal proportions](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGZEWEykk3koHcr4dvuKnEUgRX5cFMqni_AAYC-xpZ5A-UKAAvGTBvG3SglQpbtAJH4yBJLYbugoNOH54CzDPzmWvBz15oOKpUSbhc92QTkxpZ9pBajyB7jTCHWW2uWOmItN8ExdC9sD7_mJa-58Z2OuE91nbInQp8wndEwAZRS3dSESUjK77qGFVc/s1920/The%20percentage%20of%20copper%20and%20oxygen%20in%20samples%20of%20CuO%20obtained%20by%20different%20methods%20were%20found%20to%20be%20the%20same.%20This%20illustrates%20the%20law%20of%20%5BAMU%201982,%2092%5D.jpg "Question: The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. This illustrates the law of [AMU 1982, 92] (a) Constant proportions (b) Conservation of mass (c) Multiple proportions (d) Reciprocal proportions")