Three shining iron nails Kept unday the following conditions. a) kept open in attest tube containing А wet cotton.

B )kept in a closed container quick lime

c) About half protein of the nail is kept immrest in sodium chloride solution

questions:-

1) al which of these nails get rusted ? o

2)identify the nail which does not undergo rusting Give reason

3)Suggest a method to prevent corrosion of iron

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box