UPSC Government Jobs Exams

Bleaching powder is added in water
used for drinking purpose. The role
of bleaching powder in this case is
(a) of disinfectant
(14 of bleaching agent
(c) to remove impurity
(d) to decrease the pH

Read Solution (Total 1)

option (a) ans
chlorine acts as a bleaching agent
11 years agoHelpfull: Yes(0) No(0)

UPSC Other Question

When an iron nail is dipped in a
solution of copper sulphate, the
iron nail becomes brownish in
colour and the blue colour of
copper sulphate solution fades after
some time. The reaction is an
example of chemical
(a) combination
(b) decomposition
(c) displacement
(d) double displacement
If four balloons A, B, C and D are
filled with hydrogen, oxygen,
helium and nitrogen gases
respectively and left in air, which
balloon reaches to the highest
distance from the Earth?
(a) Balloon A
(b) Balloon B
(c) Balloon C
(d) Balloon D