The formation of brown coloured flaky layer (rust) on iron nail when kept in air for a long time is a _________.

chemical change

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

physical change

No worries! We‘ve got your back. Try BYJU‘S free classes today!

reversible change

No worries! We‘ve got your back. Try BYJU‘S free classes today!

fast change

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A chemical change
Chemical changes can be defined as the change in which the chemical composition of substances is altered and some new product is formed.

Iron nail in the presence of moist air forms a brown coloured flaky layer on the surface called rust. Rust has different chemical composition and properties as compared to that of an iron nail. Thus, it is a chemical change.

Suggest Corrections

Similar questions

Q. The formation of brown coloured flaky layer (rust) on iron nail when kept in air for a long time is a _________.

When iron (Fe) is exposed to moist atmosphere for a long time, rust is formed which is a layer of a brown flaky substance. What is the chemical composition of this iron rust?

Q. Assertion :Polished iron nails do not rust when kept immersed in a test tube containing boil water covered with a layer of oil. Reason: Rust formation can be controlled with coatings such as paint or varnish that isolate the iron from environment. When only temporary protection is needed for storage or transport a thin layer of oil, grease can be applied to an iron surface.

Q. Iron when exposed to moist air forms a reddish brown layer of iron oxide, which is known as rust.

Q. Iron when reacts with moist air forms a reddish brown layer of iron oxide which is known as rust.

Join BYJU'S Learning Program