MCQ
Duralumin is an alloy of :
- ✓Al and Cu
- BCu and Sn
- CAl and Ag
- DAl and Fe
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| Reaction | Products |
| (i) $NaCl + H _2 SO _4 \xrightarrow{\text { below } 200^{\circ} C }$ | (p) $Na _2 SO _4+2 HCl$ |
| (ii) $2 NaCl + H _2 SO _4 \xrightarrow{\text { above } 200^{\circ} C }$ | (q) $Na _2 SO _4+ HCl$ |
| (iii) $NaHSO _4+ NaCl ^\xrightarrow{\text {above } 200^{\circ} C }$ | (r) $NaHSO _4+ HCl$ |