I got 8 out of 10, but I'm not sure how indicative it is of useful knowledge - so I know an electro, proton and neutron make an atom...
And I'm confused by question 8:
What is the major use of a rotary kiln in making cement?
The correct answer is shown as:
It burns off carbon dioxide and fuses the raw materials.
How does one burn off Carbon Dioxide, considering it is incombustable?