what the difference is/what the difference is

Is this your question?

Is only one of these correct, or ar both?

1. Can you tell me what the difference is between kerosene and gasoline?

2. Can you tell me what is the difference between kerosene and gasoline?



If so, the answer is only (1) is correct . Can you tell me + required information (not question form)
Will you tell me what your name is? (not Will you tell me what is your name?)

Thanks, Tes yeux noirs.

Is it correct to say:

Can you tell me the difference between kerosene and gasoline? (without "what is".) If it is possible, is there a difference in meaning?

Yes it is possible to omit 'what is' without any change of meaning.

Thanks, Tes yeux noirs.