Grand Trunk road was built during the period of 

The road which connects Kolkata and Amritsar is

All the important towns and cities are connected by the

Which type of energy is used for moving the bicycles?

The 'lifetime' of our country are

The best means of transport in desert areas is

Who invented Aeroplane?

The roads in India are of

Underground railways are called 

Which is the cheapest and best way to transport heavy objects?