Sindh borders Indian states and is in India.
Sindh [ sɪnd ] ( سنڌ ; [ ) is one of the four provinces of Pakistan , in the southeast of the country . Sindh is the third largest province of Pakistan by area , and second largest province by population after Punjab . Sindh is also the centre of Pakistan 's pharmaceutical industry . Sindh 's capital , Karachi , is Pakistan 's most ethnically diverse city , with Muhajirs , or descendants of those who migrated to Pakistan from India after 1947 and throughout the 1950s and 1960s , making up the majority of the population .