Which of the following is wrong in respect of the law of Copyright?

The statement "There is no copyright in a government work" is wrong, because under section 17(dd) of the Copyright Act, 1957 the Government is the first owner of copyright in a government work, and section 28 prescribes its term; section 52(1)(q) only exempts certain acts in relation to such works from infringement. The other statements, "Copyright protects only the expression and not idea", "There is no copyright in respect of a fact" and "Copyright doesn't require registration", correctly state the law.