We must know that – During the preparation of hydrogen chloride gas on a humid day, the role of calcium chloride (CaCl₂) taken in the guard tube is to absorb moisture from gas. This is because CaCl₂ is used gas ...

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

The cell theory was proposed by Schleiden and Schwann in 1839, postulating that all living beings are composed of cells and their products. In 1855, Rudolf Virchow modified the cell theory with his postulate, “Omnis cellula-e-cellula”, which means, a new ...