Q. No.
Identify the correct formula of 'oleum' from the following
1. H2S2O7
2. H2SO3
3. H2SO4
4. H2S2O8
Among the following oxoacids of phosphorus, the strongest reducing property is for:
1. H4P2O7
2. H3PO3
3. H3PO2
4. H3PO4
A compound "X", upon reaction with H2O, produces a colourless gas "Y" with a rotten fish smell. Gas 'Y' is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. The compound 'X' will be:
1. Ca3P2
2.
3.
4. Ca3(PO4)2
The given sequence among the following arrangements that is not strictly according to the property indicated against it.
| 1. | H2O < H2S < H2Se < H2Te : \(\small{\text{increasing} \ p K_{a}\ \text{values}}\) |
| 2. | \(\small{\mathrm{N H_{3} < P H_{3} < A s H_{3} < S b H_{3}} : \text{increasing acidic character}}\) |
| 3. | \(\small{\mathrm{C O_{} < S i O_{} < S n O_{} < P b O_{2}} : \text{increasing oxidising power}} \) |
| 4. | \(\small{\mathrm{H F < H C l < H B r < H I} : \text{increasing acidic strength}} \) |
Match List-I (substances) with List-II (processes) employed in the manufacture of the substances and select the correct option.
| List –I (Substances) | List – II (Processes) |
| (a) Sulphuric acid | (i) Haber's Process |
| (b) Steel | (ii) Bessemer's Process |
| (c) Sodium carbonate | (iii) Leblanc Process |
| (d) Ammonia | (iv) Contact Process |
| Options : | (a) | (b) | (c) | (d) |
| 1. | (i) | (ii) | (iii) | (iv) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iv) | (ii) | (iii) | (i) |
| 4. | (i) | (iv) | (ii) | (iii) |
Wrong statement among the following is:
1. Bond energy of F2 > Cl2
2. Electronegativity of F > Cl
3. F is more oxidizing than Cl
4. Electron affinity of Cl > F
From the given options, the compound that has a planar structure is:
1. XeF4
2. XeOF2
3. XeO2F2
4. XeO4
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