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

Ions of zinc are positively charged, thus while electrolytic refining of zinc, zinc is deposited at cathode (negatively charged pole).

Potassium and sodium react vigorously with oxygen in air and catch fire. These metals are stored under kerosene oil to prevent oxidation.

When the sulphur particles begin to form a colloidal solution is formed in the glass tank due to which short wavelength of light are scattered by the minute colloidal sulphur particles.

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