Two or more elements make up a compound
A is is a double replacement reaction (Cations and anions switch)
B is a Decomposition reaction (Breaks down into simpler substances)
C is a Synthesis or Combination reaction (both are the same thing)
D is a Combustion reaction (compound made of carbon and hydrogen reacts with oxygen)
and E is a Single replacement reaction (Cations trade)
Hope this helps! :)
Answer: Oxidation is defined as the reaction in which there is loss of electrons. It is accompanied by increase in oxidation number.

Zinc in solid state has oxidation number of zero and on losing electrons changes to
with oxidation number of +2.
Reduction is defined as the reaction in which there is gain of electrons. It is accompanied by decrease in oxidation number.

Hydrogen ions with +1 oxidation state gains electrons and converts to molecular hydrogen with oxidation state of zero.
In the given redox reaction, both oxidation and reduction takes place. They go hand in hand.

Zinc converts to
and gets oxidized.
gains electron and convert to
.
Answer:
its answer A....that's the answer is

Explanation:
The visible light spectrum is the section of the electromagnetic radiation spectrum that is visible to the human eye. Essentially, that equates to the colors the human eye can see. It ranges in wavelength from approximately 400 nanometers (4 x 10 -7 m, which is violet) to 700 nm (7 x 10-7 m, which is red).