Science · Communication Technology
In India, the first STD (Subscriber Trunk Dialing) service was started between which two cities?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Delhi-Mumbai
- 2Mumbai-Chennai
- 3Kanpur-Lucknow✓
- 4Delhi-Kolkata
Correct answer
Kanpur-Lucknow
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