Answers

Saw the questions, yah? Now the answers...
Section A
1.C
2.A
3.B
4.B
5.D
6.A
7.C
8.C
9.B
10.A
11.B
12.B
13.D
14.B
15.A

Section B
1. scientific, background, systematic, record, clear/open
2. I. Close the air-hole.
II. Light a match.
III. Place the match near the collar.
IV. Turn on the gas .
3. A strike-back occurs when the gas is burning at the jet.
4. I. Controls the amount of air in the Bunsen burner.
II. Secures the burner so it does not topple down.
III. Raises the fire to the suitable height for heating.

Section C
1. A non-luminous flame, because it is steady and produces no soot.
2. We should wear goggles and point the test-tube away from anyone.

Well, the answers. Signing off, Anthony