Subject :NSO Class : Class 5
Some iron nails were stored in containers for a few weeks as shown in the diagram below.
Only the nails in bottle X rusted. What will be a suitable conclusion for the given experiment?
A Rusting requires water only.
B Rusting requires air only.
C Rusting requires both water and air.
D Rusting requires neither air nor water.
Ans 1:
Class : Class 5
As only nails in bottle X got rusted,this means both water and airare required for rusting (as bottle X is fulfilling both the conditions) bottle W has only air, bottle Y has only water and bottle Z has oil.i.e., neither air nor water
Ans 2:
Class : Class 5
Ans 3:
Class : Class 6
Ans 4:
Class : Class 6
Then how is Mars(Planet) rusted?
Ans 5:
Class : Class 7
C is the answer to this question