Advertisements
Advertisements
प्रश्न
Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?
पर्याय
It is more than 7 metres high.
It weighs about 6000 kg.
It was built more than 1600 years ago.
It has not rusted after such a long period.
Advertisements
उत्तर
It has not rusted after such a long period.
Explanation:
Iron pillar near Qutub Minar in Delhi is famous for its stability because it has not rusted over a long period.
APPEARS IN
संबंधित प्रश्न
Why do we apply paint on iron articles?
What special name is given to the corrosion of iron?
With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
State whether the statement given below is true or false. If false write the correct statement.
Graphite is a lustrous non-metal which conducts electricity.
Stainless steel is an alloy of _______.
Find the correlation:
Bronze : ______ :: Tin : Cu+Zn.
Write scientific reason.
Anodization method is useful for prevention of the corrosion of the aluminium.
Complete flow chart given below.

The diagram shows the reaction between metal and dil. acid.

What is the reason for different behaviour of Mg in test tube B?
The table shown below gives information about four substances: A, B, C and D.
| SUBSTANCE | MELTING POINT (K) | ELECTRICAL CONDUCTIVITY | |
| SOLID | LIQUID/ AQUEOUS | ||
| A | 295 | Good | Good |
| B | 1210 | Poor | Good |
| C | 1890 | Poor | Good |
| D | 1160 | Poor | Poor |
Identify Ionic compounds from the above given substances.
