Jamjang Deru gave India the firstmedal in the World Youth Weightlifting Championships Monday, as he won a silver in the 50kg boys category on the opening day at Tashkent, Uzbekistan.Deru won the silver in clean and jerk with an effort of 110 kg and finished fourth in the total lift with 195kg.In the same category, Deepak Lather finished 12th in total lift with an effort of 174kg.In the girls 44kg category, Chandrika Tarafdar finished seventh in total lift with an effort of 135kg while Poonam Dalal was 15th with a total lift of 122kg.The World Youth Championships serve as a qualification event for 2014 Youth Olympic Games.