Gold (Ag) and copper (Cu) obtained after extraction are in impure form. So, metals like gold and copper are refined by electrolytic refining. Other than gold and copper, electrolytic refining is used for metals such as Zn and Ag. Sodium ...

All we know that, when an object moves closer to a concave lens the image will be away from the lens on the same side of an object.

Bleaching powder is produced by the action of chlorine on dry slaked lime. Ca(OH)₂ + Cl → CaOCl₂ + H₂O

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

The absence of amylase in the saliva thus affects the breakdown of starch into simpler sugar molecules. As we know that, the process of digestion begins in the mouth. The mouth contains a digestive enzyme, salivary amylase. This enzyme breaks ...