Q. 64.3( 6 Votes )

Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?
A. It is more than 7 metres high.

B. It weighs about 6000 kg.

C. It was built more than 1600 years ago.

D. It has not rusted after such a long period.

Class 7th NCERT - Exemplar Science 6. Physical and Chemical Changes

Answer :

Mixing other metals in iron resulting in its composition make it resistant of rusting. Therefore, Iron pillars of Qutub Minar has not rusted from such a long period.

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PREVIOUSA man painted his main gate made up of iron, to(i) prevent it from rusting.(ii) protect it from sun.(iii) make it look beautiful.(iv) make it dust free.Which of the above statement(s) is/are correct?NEXTGalvanisation is a process used to prevent the rusting of which of the following?

Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability? A. It is more than 7 metres high.B. It weighs about 6000 kg.C. It was built more than 1600 years ago.D. It has not rusted after such a long period.

Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?
A. It is more than 7 metres high.

B. It weighs about 6000 kg.

C. It was built more than 1600 years ago.

D. It has not rusted after such a long period.