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

Cordite is prepared from _______

Which of the following is also called white mica?

Which tool is used to remove dust from blast holes in the process of blasting?

Thermal damping is given by the equation D = (T-t/T) x 100. Here, T denotes _____

Smith’s test is used to find out ________

Which of the following statements about electric precipitators is false?

The material obtained at the end of the shingling process is called as ____