Explain browning of cut apple can be prolonged by applying lemon juice .

Answer the following : Explain, how sound of different frequencies can be produced using flute.

Why does cut apple turn brown when exposed to air?

Explain the following turmeric powder can be used as antiseptic .

Explain the action of pancreatic juice on food.

Explain the following: Can we permanently prevent the rusting of an iron article by applying a layer of paint on its surface?

What is the physical change observed when milk gets curdled on adding lemon juice?

Photoelectric effect can be explained by assuming that light