Q. Which of the following is/are pure substance/s?
Choose the correct answer from below given codes:
Explanation: Pure substances have characteristics different from mixtures. Constituent particles of pure substances have fixed composition.
- Copper, silver, gold, water and glucose are some examples of pure substances.
- Glucose contains carbon, hydrogen and oxygen in a fixed ratio and its particles are of same composition.
- Hence, like all other pure substances, glucose has a fixed composition.
- Also, its constituents—carbon, hydrogen and oxygen—cannot be separated by simple physical methods.
Source: Science NCERT