Hoxhle NEU
4 Burning is also called .... ..... (combustion/rusting).
on burning, fuels release.................. (carbon dioxide/oxygen).
Circle the odd one. One has been done for you.
1. Oxygen Carbon monoxide, Sulphur dioxide (Hint: Impurities in air: circle the one that is
an impurity in ant)
2 Nitrogen, Carbon dioxide, Helium (Hint: Inert gases)
Neon, Angon, Oxygen (Hint: Inert gases)
4 Respiration, Combustion. Photosynthesis (Hint: Require oxygen)
5. Deforestation, Automobile exhaust, Eco-friendly products (Hint: Lead to air pollution)
SECTION II
Give reasons for the following
1. Air is a mixture.
2. Fuel is required for cooking food.
3. CNG is the preferred mel in running automobiles.
4. We should grow more trees.
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Answer:
1. BURNING IS ALSO CALLED COMBUSTION.
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