BPSC 53-55th Exam Prelims 17 Apr 2011 Solved Paper

In 1850 experimental electric telegraph started for first time in India between Calcutta (Kolkata) and Diamond Harbor (southern suburbs of Kolkata, on the banks of the Hooghly river). In $1851,$ it was opened for the use of the British East India Company. Subsequently, construction of telegraph started throughout India. A separate department was opened to the public in 1854