Question

9
Choose the incorrect statement :
(1 Point)
Digestion causes breakdown of
complex molecules of carbohydrates,
fats and proteins into smaller
molecules
Rusting is a reddish-brown flaky
substance that forms on the surface of
any substances
Chemical change is permanent and
irreversible change.
Digestion is regarded as a
decomposition reaction.​

Answer 1

Answer:

second and last statement is wrong because,

rusting is of different colours in different metals.ex:iron reddish brown,copper greenish.

Digestion is not decomposition of reactions.

It is a process in which food is break down into several pieces and number of nutrients are extracted from it.

Answer 2

Answer:

Rusting is a reddish-brown flaky substance that forms on the surface of any substances

AND

Digestion is regarded as a decomposition reaction

.​ IS WRONG STATEMENT.

Explanation:

second and last statement is wrong because,

Rusting is a reddish-brown flaky substance that forms on the surface of any substances- FALSE

rusting is of different colors in different metals.ex:iron reddish brown,copper greenish. and it does not happen on every surface. It is only happen in metals.

Digestion is not decomposition of reactions.-FALSE

It is a process in which food is break down into several pieces and number of nutrients are extracted from it.

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