What is the length of broad gauge railway?

In how many zones has the Indian Railways system been divided?

Which one of the following is the longest highway of India?

On which river and between which two places does the National Waterways No. 1 lie?

In which of the following year, the first radio programme was broadcasted?

Which activity does transportation convey? Name three major modes of transportation.

Discuss advantages and disadvantages of pipeline transportation.

What do you mean by communication?

Discuss the contribution of Air India and Indian Airlines in the air transport of India.

Which are the chief means of transportation in India? Discuss the factors affecting their development.

Give a detailed account of the development of railways in India and highlight their importance.