Class 10th Science Session 2022-23 Class 10 Science Terminal Exams MCQ Solutions Class X Science MCQ Extra Questions Answers 10th Science Terminal Exam Based MCQ Extra Questions

We can see the sky because the sunlight gets scattered by the particles present in the atmosphere. Without it, the sky would be dark and black with just the sun and the stars as bright objects in space.

(i) Ca(OH)₂ + CO₂ → CaCO₃ + H₂O (ii) Fe + CuSO₄ → FeSO₄ + Cu (iii) KClO₄⁻ → KCl + 2O₂ (iv) Cu + 2HNO₃ → ...

The principle of separation is based on the difference in physical or chemical properties of the components of a mixture. Depending on the type of components and their respective properties, different techniques are used.

Ethyl alcohol and water are completely miscible liquids, having different boiling points can be separated by the process of distillation.