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

Which of the following is the red oxide of iron?

Dolerite is an example of ____ rock.

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

Cordite is prepared from _______

Which of the following is the correct relationship between thermal resistance and thermal conductivity?

Smith’s test is used to find out ________

The process of extraction of the certain required amount of water from air is known as _______