CBSE Class 10 Science MCQs: Multiple Choice Questions (MCQs) carry significant weightage in the CBSE Class 10 Science exam, with almost 20 marks assigned to this section alone. Preparing well for this ...

Q.1. Which option correctly shows the transport of oxygen to the cell? (a) Lungs →pulmonary artery →right atrium → right ventricle→ vena cava → body cells (b) Lungs →pulmonary vein →right atrium ...