Most Indians are unhappy with Prime Minister Narendra Modi’s government over its handling of exam scandals that touched off student protests across the country, according to a nationwide survey by one of the country’s largest pollsters.Just over half of Indian adults polled by CVoter last week said they were “not happy” with the government’s handling of recent leaks of the country’s medical exam, which resulted in the invalidation of tests for millions of exam-takers, the polling firm said on...