The process of puddling is carried out in a ____

Which of the following is not a property pf wrought iron?

The reciprocal of thermal conductivity is known as ______

Blasting powder is a mixture of _________

Which chemical is used in the method of parkerizing, adopted to prevent corrosion?

Which of the following statements about low shaft blast furnace is not true?

Latin word for iron is ____

Which of the following is the correct relation between thermal transmittance and thermal time constant?