Q. Consider the following statements:
1.Copper turns to liquid when heated and can be shaped to the desired shape.
2.The production of steel is the result of repeated heating and cooling of iron with controlled carbon removal.
3.Strain is defined as the material’s ability to resist deformation.
How many of the statements given above are correct?
Answer: B
Notes:
Explanation –
Statements 1 and 2 are correct. Copper melts at a temperature of around 1085°C and once it is in a liquid state, it can be cast into molds to form desired shapes. The production of steel involves processes such as basic oxygen steelmaking (BOS) and electric arc furnace (EAF) methods, where iron is repeatedly heated and cooled, and carbon content is controlled to produce steel.
Statement 3 is incorrect. Strain is defined as the deformation or change in shape of a material in response to an applied stress.
Source: The Hindu
