problem 1:
Describe the biochemical consequences of lead, mercury and cyanide.
problem 2:
With the use of the chemical equations, illustrate the setting and hardening of the cement.
problem 3:
What do you understand by the term Portland cement? Why is it called so? Provide its composition.
problem 4:
prepare down the significant properties of the refractories.
problem 5:
prepare down the different methods of producing metal powders.
problem 6:
prepare down a note on the categorization of explosives.