How are underground railways built? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.
How are underground railways built?
Under the cities lie the foundations of large buildings and many pipes which transport water, gas electricity and telephone cables. Underground railway builders have two options. They can either dig deep tunnels or they can run the railway under the existing roads. In the latter, a large trench is dug along the road and closed again after the railway is built.
Related posts:
What is the riddle of the Nile? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9,...
General Knowledge
What is a boll weevil? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
GK Question "How The Mountains Were Formed?" general knowledge book English 2021 current affairs qui...
General Knowledge
When were bacteria discovered? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, ...
General Knowledge
GK Question "Can Animals See In Colour?" general knowledge book English 2021 current affairs quiz an...
General Knowledge
Do you know “Sarpakatu, a fort that a serpent cannot climb”.
Do you know
What kind of clothes did the Mayans wear? Complete General Knowledge Question and Answer for Class 6...
General Knowledge
What is a volcano? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 1...
General Knowledge
Do you know “An introduction to one of the translated poems reads”.
Do you know
GK Question "What Do You Know About Fossils?" general knowledge book English 2021 current affairs qu...
General Knowledge
GK Question "How Glass Was Discovered?" general knowledge book English 2021 current affairs quiz and...
General Knowledge
What did small dinosaurs feed on? Complete General Knowledge Question and Answer for Class 6, 7, 8, ...
General Knowledge
How does a caterpillar spin a cocoon? Complete General Knowledge Question and Answer for Class 6, 7,...
General Knowledge
Did the Celts raise cattle? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
Who was Nebuchadnezzar?Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 a...
General Knowledge
Which is the biggest polar mammal? Complete General Knowledge Question and Answer for Class 6, 7, 8,...
General Knowledge
Why do boy's voices change? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10,...
General Knowledge
GK Question "How Does A Caterpillar Become A Butterfly?" general knowledge book English 2021 current...
General Knowledge
What is cataract of the eye? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10...
General Knowledge
Why do camels have humps? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 1...
General Knowledge
What was a vomitorium? Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.
Which birds are good talkers?Complete General Knowledge Question and Answer for Class 6, 7, 8, 9, 10, 11 and 12 Students CBSE Exams.
Do you know “Measuring the earth’s diameter”.
About Author
