Question

(b) Name a few scientists /explorers /social reformers/inventors / discoverers,
who spent most of their lives to find solutions to some major problems
setbacks, that mankind faced.​

Answer 1

Robert Hooke invented balance spring and a machine that cut teeth for cogs. Benjamin Franklin invented electricity. Raja Ram Mohan Roy abolished sati pratha, caste system. Swami Dayanand was against untouchability and child marriage. Vasco da gama explored the route to India.