Correct option is A
The correct answer is S1 is observation and S2 is inference.
Observation refers to the direct or indirect information gathered through our senses or measurements.
In this case, S1 states the boiling point of water as 102°C. This is a specific measurement that can be directly observed or measured, making it an observation. On the other hand, inference refers to drawing conclusions or making interpretations based on observations or existing knowledge.
S2 suggests that there may be impurities present in the water sample. This is an inference because it is a conclusion drawn based on the observation of the boiling point being higher than the expected boiling point of pure water (which is 100°C at standard atmospheric pressure). The presence of impurities is not directly observable but inferred based on the deviation from the expected boiling point.
Hence, it can be concluded that S1 is an observation (boiling point measured as 102°C), and S2 is an inference (impurities