01. For each of the
following items, choose the most correct answer from the given alternatives and
write its letter beside the item number in your answer sheet.
i)
The condition of being hot is:
A. Temperature
B. Heat
C. A flame
D. Burners
ii)
A non-luminous flame is formed when:
A. There is
incomplete burn of fuel
B. There is an
adequate supply of carbon dioxide
C. Air holes of a
Bunsen burner are opened
D. Air holes of a
Bunsen burner are closed
iii) A small laboratory heat source consisting of a
vertical metal tube connected to a gas source is:
A. A Bunsen burner
B. Tin lamp
C. Hurricane lamp
D. Candle
iv)
The natural source of heat on the earth is:
A. The sun
B. Candle
C. Kibatari
D. Gas stove
v)
Non-luminous flame is used for cooking because:
A. It is formed when
air holes of Bunsen burner are opened
B. It is used for
flame test
C. It is very hot
and it does not form soot
D. Of adequate
supply of oxygen
Answers:
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i
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ii
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iii
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iv
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v
|
|
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|
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02. (a) Define flame
(b) Differentiate the two
types of flames formed by a Bunsen burner.
03. Draw a well
labeled Bunsen burner.
04. (a) State four
(4) uses of non-luminous flame.
(b) State one (1) use of a
luminous flame.
03. HEAT SOURCES AND FLAMES
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