2:07 What is the difference between noise and music? Can music become noise sometimes? MyNotesg 1 views - 3 weeks ago
1:01 What are the two important properties of sound that help us to recognise a person by his voice? MyNotesg 2 weeks ago
1:39 Fresh milk has a pH of 6. How do you think the pH will change as it turns into curd? MyNotesg 5 views - 1 month ago
1:31 Cite an experiment to show that sound needs a material medium for propagation. MyNotesg 3 weeks ago
1:17 Which gas is usually liberated when an acid reacts with a metal? test for the presence of this gas? MyNotesg 17 views - 1 month ago
2:14 Why do different musical instruments produce different sounds even when they play the same note? MyNotesg 3 weeks ago