हालिया नागरिक उड्डयन बुनियादी ढाँचे के विकास के अनुसार, राजस्थान के निम्नलिखित में से किस जिले में एक कार्यात्मक व्यावसायिक परिचालन हवाई अड्डा (commercial operational airport) नहीं है?

Which mode of transport is most suitable for carrying bulky and heavy goods over very long distances, particularly in international trade, at the lowest cost?

National Waterway-1 of India covers which of the following stretches?

The North–South corridor, which is a part of the National Highway network, links which two locations in India?