Coal is a very useful rock that formed over millions of years from the remains of plants. Is coal a mineral? No, coal is not a mineral because coal can be burned to produce electricity and heat.

Yes, coal is a mineral because all rocks are nonliving solid minerals.

Yes, coal is a mineral because all rocks that are useful to people are minerals.

No, coal is not a mineral because coal is made of dead plants.

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.