Question

magic tricks with scientific reason

Answer 1

take a Lemon and cut with knife you can get blood from it because before you have dipped knife in phenolthaphen indicator secretly

Answer 2

There are a few tricks I know-
!.Fire breathing trick-you have to keep Kerocene in your mouth.Then take stick and light a fire on it.Wave the fire in front of your mouth and after sometime blow it out.Pure fire will come out.This is because kerocene is a supporter of burning.
2.Candle trick-you have to light a candle.Take a glass and put it over the candle.After sometime the fire go out.This is because air consist  of one part of oxygen and four parts of nitrogen.The fire goes out as the one part of oxygen is used up for burning and what is left in the glass is nitrogen.
3.Candle and fire trick-take a bowl and fill a bit water in it. light a candle and put it in the bowl. Light a candle,after somtime the fire will go out and the water will get filled in the glass. The example is same as the second trick.