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Problem
Problem
Which of the following does/do not impart characteristic colour to the flame? a.
MgSO
4
\text{MgSO}_4
MgSO
4
b.
CaCl
2
\text{CaCl}_2
CaCl
2
c.
Sr
(
NO
3
)
2
\text{Sr}(\text{NO}_3)_2
Sr
(
NO
3
)
2
d.
BeCl
2
\text{BeCl}_2
BeCl
2
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