Which of the following statements about electric precipitators is false?

Crushing strength should be greater than _______ for a good structural stone.

Dust of pure _____ is used to cover the article to be treated for corrosion in the method of sherardising.

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

Grey pig is produced when the blast furnace is not provided with sufficient fuel while the white pig is produced when th…

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

Rate of the burning of a good fuse is _______

For a stone to be used in road work, coefficient of hardness should be greater than _______