Question

Observe the colour change when vegetables cut in to pieces by your mother and give reasons for that and write some more such type of changes takes place in our surroundings

Answer 1

Oxidation reaction.

Explanation:

• Fruits and vegetables contains an enzyme called poly phenol oxidase, when a fruit or vegetable is cut open this enzyme is exposed to air and reacts with it.

• Poly phenol oxidase gets oxidised  and turns the surface brown. The bruising seen on some vegetables or fruit is also because of this reaction. Anti-browning solution can be used to prevent them from turning brown.

• There are various other techniques that can be used to prevent it from turning brown e.g vegetables can be soaked in cold or acidulated water while lemon juice can be applied to the fruits.

• Rusting of iron is also a case of oxidation-reduction reaction.

$4Fe + 3O_2 ->2Fe_2O_3$   (Water is necessary for the oxidation of Iron)

Learn More:

Oxidation and reduction

https://brainly.in/question/1158539

Answer 2

When vegetables are cut often it is found that the color changes as the peel of different colors are taken off and upon cooking these veggies turn to a different color.  

Explanation:  

• Apart from vegetables changing color when cut, fruits also change color in his various stages of growth.
• A mango might be green when it is half-ripe, then start turning into yellow when it is ripe and it will be orangish-yellow when it becomes overripe.
• Vegetables lose color when cooked as the heat changes the nutrient composition of the vegetables and hence the color changes.

Learn more about Vegetables:

Can fresh vegetables and fruits be stored in airtight containers for a long period of time like unckood dry pulses and rice why or why not?​

https://brainly.in/question/11933449

Riya's grandmother always dries vegetables in the Sun before pickling them. How does drying help vegetables?

https://brainly.in/question/9465986