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Subjects
Science CBSE
Class 8
Materials: Metals and Non-metals
Textbook questions
2.
Exercises II
Exercise condition:
5
m.
Answer the following question
:
Fill in the blanks.
(a).
Phosphorus is a very
active
passive
reactive
non-reactive
non-metal.
(b).
Metals are
passve
good
worst
bad
conductors of heat and
density
electricity
thermal
acoustical
.
(c).
Iron is
more
active
worst
less
reactive than copper.
(d).
Metals react with acids to produce
oxygen
nitrogen
hydrogen
sulphur
gas.
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