Font size
WorksheetsMetals and non metals and chemical effects
Total questions: 15
Worksheet time: 8mins
Can the Element present in CFL bulbs displace copper
Yes
No
In some situations it can
NOTA
The two long metal ends protruding from a LED are called
Wires
Poles
leads
NOTA
Which needs least current
Incandescent bulb
CFL bulbs
LED's
All use the same
Other name for electrolytic cell is
Voltmeter
Water splitter
Ion splitter
Voltameter
Al2O3 Is called
Aluminum Oxide
Corundum
Fused Bauxite
Bauxite
What ore do we get Calcium from?
CaO2
Ca2O3
CaCl
CaCl2
What is the minimum requirement (in voltage) for a electrolytic cell to function.
(a)
Name any non-noble metal used for electroplating.
(a)
1 gram of gold can be drawn into
100 meters
200 meters
1000 meters
2000 meters
Which of these metal's isn't highly conductive
Aluminum
Gold
Lead
Copper
We we add carbon dioxide to water we get __________ and it's chemical formula is
Carbonic acid,H22CO5
Carbolic acid,H22CO5
Carbolic acid,H2CO3
Carbonic acid,H2CO3
Potassium oxide when mixed with water forms __________ and it's chemical formula is
Potassium Di hydroxide,2K(OH)2
Potassium hydroxide,2K(OH)2
Potassium Di hydroxide,2KOH
Potassium hydroxide,2KOH
Which is the 5th least reactive metal?
Iron
Copper
Mercury
Silver
Which metal doesn't occur in the free state
Gold
Silver
Copper
Platinum
(a) metal is used to make mirrors for lab purposes
