Question

when your mother cut arum leaves , her hand begin to itch why does ts happen

Answer 1

because the leaves of arum include some poison and it is sticky

Answer 2

When your mother cut arum leaves, her hand begin to itch because it contains calcium oxalate and it is a water insoluble salt.

When it contact with skin we get an itching sensation because reaction of acid.

The chemical formula of calcium oxalate is CaC2O4 and it is a salt of oxalate.

The colour of calcium oxalate is colourless or white.

It can be by naturally from the plants in the envelope shape crystals are called raphides.