MCQ
Which gas is evolved when dilute $MgSO _4$ react with active metals such as Mg ?
- ✓$H _2$
- B$CO _2$
- C$SO _2$
- D$H _2 S$
✓
Answer
Correct option: A.
$H _2$
(a) $H _2$
Explanation : Dilute acids react with active metals such as Mg to liberate hydrogen gas.
$2 H _2 SO _4+ Mg \rightarrow MgSO _4+ H _2 \uparrow$
Sulphuric Magnesium Magnesium Hydrogen acid sulphate gas.
Explanation : Dilute acids react with active metals such as Mg to liberate hydrogen gas.
$2 H _2 SO _4+ Mg \rightarrow MgSO _4+ H _2 \uparrow$
Sulphuric Magnesium Magnesium Hydrogen acid sulphate gas.
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