| 1 |
Nitrogen oxide is also known a s what?
|
Rotten egg gas<br>
Laughing gas <br>
Smelly gas<br>
Hot air balloon gas<br>
|
| 2 |
Which of the chemical symbol for the element mercury?
|
My
Hg
Me
Mc
|
| 3 |
Which of the following gases would you find a soft drink?
|
CO<sub>2</sub>
HCI
CO
H<sub> </sub>SO<sub>4</sub>
|
| 4 |
What is the main constituent of coal gas?
|
O<sub>2</sub>
H<sub>2</sub>O
N<sub>2</sub>
CH<sub>4</sub>
|
| 5 |
Which variety of coal contains the highest percentage of carbon?
|
Lignite<br>
Bituminous<br>
Anthracite<br>
Peat<br>
|
| 6 |
Coal is formed due to the process of
|
Evaporation<br>
Centrifugation<br>
Conjugation<br>
Carbonization<br>
|
| 7 |
Which of these has the highest calorific value?
|
Rubber!
Hydrogen<br>
Coal <br>
Wood<br>
|
| 8 |
What is the main component of biogas and natural gas?
|
Ethane<br>
Butane<br>
Propane<br>
Methane<br>
|
| 9 |
What colour flame does Lithium ave when it is it
|
yellow<br>
Crimson<br>
Turquoise<br>
Sandy<br>
|
| 10 |
Which of theses is liquid at room temperature?
|
Chlorine <br>
Oxygen<br>
Iodine <br>
Bromine<br>
|
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