TRACK YOUR PROGRESS
3. State TRUE or FALSE.
a. Lead is used to make paints.
b. The composition of solder is 65% copper and 35% zinc.
c. Silver is used in thermometers.
d. Nitrogen is used in the manufacturing of fertilisers.
e. Gold is used to make machine tools because of its low cost
and very high strength.
Answers
Answered by
30
Answer:
a. false
b. true
c. false
d. true
e. false
Answered by
11
Answer:
a. True
c. false
I know only these
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