- 1(current)
Q. No.The strong reducing behaviour of H3PO2 is due to:
1. Presence of one -OH group and two P-H bonds.
2. High electron gain enthalpy of phosphorus.
3. High oxidation state of phosphorus.
4. Presence of two -OH groups and one P-H bond.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology2. Is a reducing agent
3. Is soluble in water
4. Is used as a food-preservative
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following compounds does not release oxygen when heated?
1. Zn(ClO3)2
2. K2Cr2O7
3. (NH4)2Cr2O7
4. KClO3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe incorrect statement regarding oxoacids of phosphorus is:
| 1. | Orthophosphoric acid is used in the manufacture of triple superphosphate. |
| 2. | Hypophosphorous acid is a diprotic acid. |
| 3. | All oxoacids contain tetrahedral four coordinated phosphorus. |
| 4. | All oxoacids contain at least one P=O unit and one P-OH group. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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. | \(\small{\mathrm{H F < H C l < H B r < H I} : \text{increasing acidic strength}} \) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOxidation states of P in H4P2O5, H4P2O6, H4P2O7, are respectively:
| 1. | +3, +5, +4 | 2. | +5, +3, +4 |
| 3. | +5, +4, +3 | 4. | +3, +4, +5 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTotal number of bridging oxygen atoms present in are:
1. 4
2. 2
3. 5
4. 6
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMatch 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) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe electronegativity difference between N and F is greater than that between N and H yet the dipole moment of NH3 (1.5 D) is larger than that of NF3 (0.2 D). This is because:
| 1. | In NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction |
| 2. | In NH3 the atomic dipole and bond dipole are in the same direction whereas in NF3 these are in opposite directions |
| 3. | In NH3 as well as in NF3 the atomic dipole and bond dipole are in opposite directions |
| 4. | In NH3 the atomic dipole and the bond dipole is in opposite directions whereas in NF3 these are in the same directions |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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