MCQ
When sulphur trioxide gas is passed through conc. sulphuric acid :
- Ait just dissolved in it
- Bit bubbles out of it
- ✓it reacts chemically to form pyro-sulphuric acid
- Dnone of these
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| 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) $NaHSO _4+ HCl$ |