Which of the following statements about electric precipitators is false?

Rate of the burning of a good fuse is _______

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

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

Which metal is used in the galvanisation of iron in order to prevent it from rusting?

Blasting powder is a mixture of _________

Which of the following is capable of absorbing excess moisture from the air?

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