Question

iron and coal ________ useful for industry... is or are​

Answer 1

Explanation:

are is the answer

hope it helps you dear

Answer 2

Answer:

Iron and coal are useful for industry.

Explanation:

Iron and coal are useful for industry. We use 'are' when we are speaking about more than one object or subject.

In the sentence:

Iron and coal are useful for industry. Here we have two objects, which are iron and coal.

Another example will be-

Pam, Ram, and Sam are walking. Here we have three people so we use 'are'.