The reciprocal of thermal conductivity is known as ______

Which of the following is not a property of cast iron?

The process of puddling is carried out in a ____

Which of the following is not a classification of rocks from which building stones are obtained?

Remelting of pig iron with limestone and coke to manufacture cast iron is carried out in a ________

Which of the following is not a variety of pig iron?

Reflective sheet materials used as thermal insulating material have _______ reflectivity and ______ emissivity.

Which of the following statements about dynamite is not correct?