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What colour should the leaf turn when iodine is added?

The leaf should turn blue-black when iodine is added, indicating the presence of starch.


What colour does the leaf turn once iodine is added and is no starch?

When iodine is added to a leaf with no starch, the leaf will remain its original color (usually green). Iodine reacts with starch molecules, turning the leaf blue-black if starch is present.


What does a garden snake turn into after it has been decomposed?

a marbey


Rahul picked up a dry leaf from the school garden and try doing iodine test he observed that the colour of iodine did not turn blue or black can you explain why?

because the leaf doesnot contain starch in it


What do you turn into when you die a angel or something else?

You turn into decomposed body parts, like dust and rot away.


What colour do you turn when you die and what colour is it?

Blue...


What does the presence of blue color means in variegated leaf experiment of photosynthesis?

By blue color I assume you mean an added dye that shows how some parts of the leaf can photosynthesize and others not. The easiest of these experiments is to place the leaf in boiling ethanol (alcohol) and when drained of colour spread out on a flat surface. Soak the leaf in iodine and the green parts will turn blue/black and the non green parts will stay the yellowish brown colour of iodine. The green parts contain starch (a more compact form of glucose) which makes iodine turn blue/black. The blue/black is what will show starch is present.


Why does a person turn blue when choking?

because your oxygenated blood is what gives you colour and if you are being strangled or choking it cuts off the oxygen supply and you go the colour of your de-oxygenated blood.


Why does leaf turn light green when boiled in ethanol?

add the leaf to boiling ethanol in a water bath for a few minutes (the boiling ethanol dissolves the chlorophyll and removes the green colour from the leaf - it turns white so it is easy to see the change in colour) wash with water to rehydrate and soften the leaf


What is the role of iodine in testing a leaf for starch?

A hot bath of ethanol decolorizes the leaf by washing out the chlorophyll. If the leaf is not decolorized, you cannot see the blue-black stain that results from the iodine reacting with the starch.


How do you tell that water mixed with oil in a car?

It will turn into a grayish white sludge instead of being either amber or black in colour.


What happens when you put a leaf in boiling alcohol?

When a leaf is placed in boiling alcohol, the alcohol will extract the pigments from the leaf, resulting in coloration of the alcohol solution. This process is used in laboratories for pigment extraction and analysis.