REDOX REACTIONS
Authored by shaurya thakur
Chemistry
11th Grade
NGSS covered
Used 838+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Is calcium oxidized or reduced in the following reaction?
2CaO--> 2Ca + O2
Tags
NGSS.HS-PS1-2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
If in a reaction, copper is reduced; its number of electrons has:
Tags
NGSS.HS-PS1-2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is oxidation number of Cr in Cr2O72-?
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is oxidation number of H in CaH2?
Tags
NGSS.HS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An increase in oxidation number.
more acidic
reduction
less basic
oxidation
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a half-reaction of this equation, Na + Cl --> NaCl ?
Cl + e- --> Cl-
Cl - e- --> Cl-
Na --> Na + e-
Na° + Cl°--> Na+1Cl-1
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The sum of the oxidation numbers in SCN- is equivalent to
0
-1
+1
+3
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