Question

Statement 1: Air, lemonade and milk are mixtures.
Statement 2: Copper, aluminium and iron are elements.

• A. Both statement 1 and statement 2 are incorrect.
• B. Both statement 1 and statement 2 are correct.
• C. Statement 1 is correct and statement 2 is incorrect.
• D. Statement 2 is correct and statement 1 is incorrect.

Answer 1

The correct option is B Both statement 1 and statement 2 are correct.

Mixture is a combination of two or more different substances. Its components can be separated by simple physical means.
Air (primarily made up of nitrogen, oxygen, water vapour, carbon dioxide), lemonade (made up of lemon juice, water, and sugar) and milk (primarily made up of water, fats, minerals, proteins) are mixtures.

The substances consisting of only one kind of atoms or molecules throughout are termed as pure substances. Elements and compounds are pure substances. Copper, aluminium and iron are elements as they contain only one type of atoms.