MCQ
The non-metallic character of the elements ________ .
- ADecreases
- ✓Increases
- CRemains the same
- DDepends on the period
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| Ion | Colour | |
| (a) | $Ni ^{+2}$ | Yellow |
| (b) | $Fe ^{+3}$ | Yellowish - brown |
| (c) | $CrO _4{ }^{2-}$ | Yellow |
| (d) | $Fe ^{+2}$ | Green |
| 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) $NaHSO _4+ HCl$ |