Solution:There are so many achievements of Non-Cooperation Movement.The Non-Cooperation Movement led by Gandhi was a mass Movement which was never seen before.
The popularity of the Congress and the Movement increased among the masses. The Non-Cooperation Movement certainly demonstrated that the Indian National Congress commanded the support and sympathy of vast sections of the Indian people.
Participation of Muslims in the Movement and the maintenance of communal harmony was also a great achievement. Muslim participation gave the Movement a mass character.
People became conscious of their political rights. People lost their trust in the British Government. They became confident of self-reliance. The Government failed to create fear in the mind of the public.