RRB Government Jobs Exams undefined

The most ideal disinfectant used for drinking water is

a.alum
b.chlorine
c.lime
d.nitrogen

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RRB Other Question

Which one of the following is not a prime no.

a.71
b.91
c.61
d.31
To be eligible for membership of Lok sabha,a person should be atleast

a.18 yrs
b.30 yrs
c.35 yrs
d.25 yrs