What is produced when an acid reacts with a metal?
a. salt and hydrogen
c. water and base
b. carbon and salt
d. carbon dioxide and water

Option (a) is the correct answer.

Explanation:

When an acid reacts with a metal then there occurs formation of a salt along with liberation of hydrogen gas.

For example,

Here, Zn (zinc) is the metal which when added to hydrogen chloride acid them it leads to the formation of salt zinc chloride and hydrogen gas.

This type of reaction is also known as single displacement reaction.

Thus, we can conclude that salt and hydrogen is produced when an acid reacts with a metal.

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.

answer; i do believe the correct answer is (river); /// good luck