Excise duty exemption for seviyan removes the entire central excise levy under the applicable tariff subheading via statutory power. The Government, invoking section 5A of the Central Excises and Salt Act, 1944 and relying on public interest, exempts seviyan (vermicelli) falling under the stated tariff subheading from the whole of the excise duty leviable under the Central Excise Tariff Act schedule, thereby removing the duty specified for that item.