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Q. No.Which of the following elements does not show allotropy?
1. Nitrogen
2. Bismuth
3. Antimony
4. Arsenic
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe maximum covalency of nitrogen is:
| 1. | 3 | 2. | 5 |
| 3. | 4 | 4. | 6 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is wrong?
| 1. | Single N—N bond is stronger than a single P—P bond. |
| 2. | can act as a ligand in the formation of coordination compound with transition elements. |
| 3. | is paramagnetic in nature. |
| 4. | Covalency of nitrogen in is four. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA brown ring is formed in the ring test for ion. It is due to the formation of:
1. [Fe(H2O)5(NO)]2+
2. FeSO4.NO2
3. [Fe(H2O)4 (NO)2]2+
4. FeSO4. HNO3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyElements of group-15 form compounds in +5 oxidation state. However, bismuth forms only one well-characterized compound in +5 oxidation state. The compound is-
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOn heating ammonium dichromate and barium azide separately we get:
| 1. | in both cases |
| 2. | with ammonium dichromate and with barium azide |
| 3. | with ammonium dichromate and with barium azide |
| 4. | with ammonium dichromate and with barium azide |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the preparation of , we get gas by catalytic oxidation of ammonia. The moles of NO produced by the oxidation of two moles of will be:
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 6 |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe oxidation state of the central atom in the anion of the compound will be-
1. +3
2. +5
3. +1
4. -3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not tetrahedral in shape?
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following are peroxoacids of sulphur?
| 1. | \(\mathrm{H_{2} SO_{5} } \text{ and } \mathrm{H_{2} S_{2} O_{8}}\) | 2. | \(\mathrm{H_{2} SO_{5 }} \text{ and } \mathrm{H_{2} S_{2} O_{7}}\) |
| 3. | \(\mathrm{H_{2} S_{2} O_{7}} \text{ and } \mathrm{H_{2} S_{2} O_{8}}\) | 4. | \(\mathrm{H_{2} S_{2} O_{6}} \text{ and } \mathrm{H_{2} S_{2} O_{7}}\) |
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