BEE3B-Practicum-Periodic Elements
Authored by Noemi Miranda
Chemistry
7th Grade
Used 8+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Brass gets discoloured in air because of the presence of which of the following gases in air?
Oxygen
Hydrogen sulphide
Carbon dioxide
Nitrogen
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a non metal that remains liquid at room temperature?
Phosporus
bromine
chlorine
Helium
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chlorophyll is a naturally occurring chelate compound in which central metal is
Copper
Magnesium
Iron
Calcium
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is used in pencils?
Graphite
Silicon
Charcoal
Phosphorous
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following metals forms an amalgam with other metals?
Tin
Mercury
Lead
Zinc
6.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Magnesium, Calcium , Iron and Aluminum are examples of what group
7.
FILL IN THE BLANK QUESTION
30 sec • 1 pt
Chlorine, Oxygen , Bromine and lodine are examples of what group f elements.
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