What did the people think about Gopal and why?

The people, including his wife, thought that suddenly Gopal had gone crazy. This opinion was formed because: he had only partially shaved his face, he had smeared himself with ash, and, he had put on rags.

Why did the king congratulate Gopal?

The Hilsa-fish had been bought by Gopal and no one had asked him about it on his way to the palace. He had done, what the king had thought was impossible by dressing himself in a strange disguise.

Which challenge of the king did Gopal accept?

Gopal’s cleverness was doubted by the king. The king did not think that Gopal would be able to buy a huge Hilsa-fish and bring it to the palace without anyone asking him about it. The same challenge was accepted by Gopal.