Question

plz explain que no.2
1) and 3)
tomorrow's my exam plz help..

Answer 1

They are called fossil duels because they are formed from the fossils or dead remains of plants named animals...
The next one will be...
Except 3 and 4 all are unsaturated..
Hope it helps..
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Answer 2

1) Coal, Oil and Gas are called "fossil fuels" because they have been
formed from the fossilized remains of prehistoric plants and animals.
• Fossil fuels are a nonrenewable energy source since they take millions
of years to form.
2) sodium bicarbonate, also known as baking soda,
is used as antacid, used as neutralizer to neutralise acids, used for making baking powder
3) ethane- saturated
propene- unsaturated
ethyne - unsaturated
propyne - unsaturated


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