Add 1/4 cup grated red cabbage or beetroot to 2 cups water and boil for around 10 minutes or until the water turns purple. You could also chop up the vegetables with the water in a food blender. Strain the liquid and remove the vegetables (you can eat these now if you're a bit weird and want to).
yeah it is a natural indicator
asthalavistha
no
They way that you prepare an indicator using and onion and beetroot depends on what type of indicator you want to prepare (i.e.: Litmus, pH, redox or other). Generally, you will cut pieces off of the onion and beetroot and put them each in separate flasks adding ethanol or other liquid you want to use for your indicator project.
The juice of red beetroot change the color from red to yellow at a pH greater than 10.
A pH indicator can be made out of grape juice or beetroot or even eggplant. Grate 1/4 cup of beetroot or eggplant into 2 cup water, boil for 10 min and strain for the dark liquid, by the way grape juice could be used right out of carton. Add indicator to the substance that is being tested, it will be more red for pH of 2 and greener for pH of 12, and test for better knowledge of all colors that pH indicator can turn.
You can make your own onion powder easily by dicing onion finely and drying in a single layer at 150C (use oven or dehydrator). When they are dry and crumbly they can be turned to powder using a blender or mortor/pestle.
yes, unless there is a very good stain remover out there!
The usual ingredients in a typical onion soup recipe are onions, lots of vegetable stock, some herbs, garlic, white wine and some butter. I've found a recipe using the above ingredients and it will take about an hour to prepare and cook.
Yes, the indicator react with the solution.
ferroin indicator
A universal indicator is an indicator that changes color along with changes in pH level. The purpose of using it is to find a point at which a mixture of acid and base becomes neutral.
You could make a plant indicator using ur forhead
Using an indicator.
The temperature indicator is called a thermometer. The birds flying south are a good indicator of winter's approach.