a) Is water acidic , basic or neutral in nature ?
b) Chlorophyll is soluble in ___________ .
c) How starch gets converted into sugar?
d) Define combination reaction ? Write the chemical formula for magesium oxide .
Answers
a) neutral
b)
alcohol
c) fermentation
d) two or more elemts combine to give a single product
MgO
Answer:
1. Water is neutral as it does not change the colour of litmus solution.
2. Chlorophyll is soluble in Ethanol or Benzene.
3. Convert Starch to Sugar
Things You'll Need
Wheat or corn kernels
Hammermill
Iodine
Grind either wheat or corn kernels in the hammermill.
Transfer the ground grain into a container suitable for cooking and mix it with twice as much water.
Heat up the mixture to roughly 150 to 168 degrees Fahrenheit. Leave the mixture at this temperature for up to two hours. During this time, enzymes in the grain convert the starch to sugar.
Test Your Mixture
Take a sample of the mashed grain and set it aside.
Add a drop of iodine to the mixture.
Watch the mixture for changes in color. If the iodine turns clear or yellow, all the starch has been converted to sugar. If it stays a dark color, the mixture needs to remain at the above temperature for a longer time.
Tips
If your grain is very dry, soak it in water for a day before heating it.
If while steaming the mixture becomes a thick, stiff paste, adding a small amount of malt can soften it.
4. A reaction in which a single product is formed from two or more reactants is known as a combination reaction.
MgO is the formula of Magnesium Oxide.