Which of the following is not a property of an ideal preservative used for the preservation of stones?

The crude impure iron extracted from the ores of iron is called as ______

For a good stone, the percentage absorption by weight after a day in the water absorption test should not exceed _______…

According to Indian Standards, it is recommended that the overall thermal transmittance of a roof should not be more tha…

Smith’s test is used to find out ________

Latin word for iron is ____

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

Which of the following is the black oxide of iron?