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CTET 2 Math and Science Feb 2016 Paper
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Question : 67
Total: 120
“Copper cannot displace zinc from its salt solution. Give the reason.”
The following reasons are given by Class VIII students
A. Copper is more reactive than zinc.
B. Copper is less reactive than zinc.
C. Zinc is one of the noble metals.
D. Zinc appears below copper in reactivity series.
Select the correct reason(s) from the reasons given by Class VIII students.
A and D
Only B
Only A
C and D
Validate
Solution:
Copper is less reactive than hydrogen and do not replace hydrogen from water or acid. Zinc can displace copper from copper sulphate solution. So, Zinc is more reactive than copper.
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