NCERT Solutions for Class 5th Maths Chapter 14 Reading the key, the coloured lines and marking two stations — Delhi Metro Train Stations
Book page 175 Updated on2026-09-19
Q1.
Read the key to the symbols and identify them on the map.
The keys from the Delhi Metro map on page 175, with a simple drawing of the part of the map used in these questions.
Answer
The key (the box marked KEYS at the bottom of the map) has ten entries. Eight are metro lines, and two tell you what the little circles mean.
No.
Symbol in the key
What it means on the map
1
a red line
Red Line
2
a yellow line
Yellow Line
3
a dark blue line
Blue Line
4
an orange line
Airport Express Line
5
a green line
Green Line
6
a purple line
Violet Line
7
a pale pink line
Pink Line
8
a bright pink line
Magenta Line
9
a small empty circle
a metro station
10
a capsule with two coloured dots inside
an interchange station, where two lines meet
Now find each one on the map:
The orange line runs from Dwarka Sec 21 through the Airport and Delhi Aerocity to New Delhi Station — that is why it is called the Airport Express Line.
Hauz Khas is drawn as a capsule with a yellow dot and a magenta dot inside. That tells you the Yellow Line and the Magenta Line both stop there.
Rajiv Chowk is a capsule with a yellow dot and a blue dot — the Yellow Line and the Blue Line meet there.
Note: In the Hindi book the fourth line is called ऑरेंज लाइन (Orange Line) instead of Airport Express Line. It is the same line and the same colour.
Q2.
What do the different coloured lines represent?
Answer
Each colour is one metro route — one line along which the trains of that colour run, from one end of the city to the other.
Every train on a line goes only along that line. A Yellow Line train never turns off on to the Blue Line.
The circles drawn on a line are the stations where that train stops.
Where two colours meet in one capsule, you can get down from one train and get into the other. That station is an interchange.
Why colours instead of names: Delhi has hundreds of stations. A traveller who cannot read the small station names can still follow a colour with a finger. Colours make a busy map easy to use — that is exactly what a map is for.
Did you know? The lines are also named after the places they join, but people find the colour easier. In a station you will hear "change here for the Blue Line", not the full list of stations.
Q3.
Mark the Qutb Minar station on the Yellow Line and the Supreme Court station on the Blue Line.
Answer
Qutb Minar is on the Yellow Line, low down on the left of the map, between Chattarpur and Saket. Supreme Court is on the Blue Line, a little to the east of Rajiv Chowk.
To find Qutb Minar: put your finger on the yellow line and follow it downwards from the middle of the map. You pass Hauz Khas, then Saket. The very next station going south-west is Qutb Minar. Draw a circle round it.
To find Supreme Court: put your finger on Rajiv Chowk, where the yellow and blue capsules meet. Follow the blue line to the right (east). Count three stations: the third one is Supreme Court. Draw a circle round it too.
The two stations to mark, and the interchange capsule that joins their lines.
Tip: The zoo the children are going to — the National Zoological Park — is close to the Supreme Court station. That is why the teacher chose it.