Question

E
B Fill in the blanks.
are obtained from natural
fuels by various physical and chemical
processes
of the fuel is the heat
liberated when one gram of fuel burns
completely in oxygen
3. Sodium shows
.combustion
4. If the amount of oxygen present is
limited, it results in
combustion of fuel.
5. Substances that catch fire easily are
called
substances.
C State whether the following statements
are TRUE or FALSE.
1. Complete combustion takes place in the
absence of air.
2 Partial combustion of wax vapours takes
place in the middle zone of a candle
flame. .
3. Primary fuels are obtained by
different chemical processes.
4. The efficiency of the fuel is judged
by its calorific value.
5. Carbon monoxide has greater
affinity to haemoglobin than oxygen​

Answer 1

Answer:

energy , incomplete , incomplete, inflammable,C. 1 false,

2 true,

3. false

4 true

5. true

Answer 2

Answer:

all correct

so

i

accept

it