| 1 |
Oxidation of NO in air produces |
- A. N<sub>2</sub>O
- B. N<sub>2</sub>O<sub>3</sub>
- C. N<sub>2</sub>O<sub>4</sub>
- D. N<sub>2</sub>O<sub>5</sub>
|
| 2 |
The oxidation of NO in air produces |
- A. N<sub>2</sub>O<sub>3</sub>
- B. NO<sub>2</sub>
- C. N<sub>2</sub>O<sub>3</sub>
- D. N<sub>2</sub>O<sub>4</sub>
|
| 3 |
SO2 is not absorbed in water directly to form H2SO4 because. |
- A. The reaction does not go to completion
- B. The reaction is quite slow
- C. The reaction is exothermic
- D. SO3 is insoluble in water
|
| 4 |
The composition of oleum is. |
- A. H2SO4
- B. H2S2O3
- C. H2S2O7
- D. H2S3O7
|
| 5 |
Basicity of ortho phosphoric acid is. |
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| 6 |
When concentrated H2SO4 and solid sodium chloride react together at room temperature the product are. |
- A. Two salts only
- B. A salt and a base
- C. A salt and an acid
- D. A salt and water
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| 7 |
Maximum number of unpaired electrons is in |
- A. O<sub>2</sub>
- B. O<sub>2</sub><sup>+</sup>
- C. O<sub>2</sub><sup>-</sup>
- D. O<sub>2</sub><sup>2-</sup>
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| 8 |
The brown gas formed when metal reduces HNO3 is |
- A. N2O5
- B. N2O3
- C. NO2
- D. NO
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| 9 |
What is %age of calcium phosphate in bone ash |
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| 10 |
The reaction between concentrated H2SO4 and glucose give carbon and water. In this reaction H2SO4 acts as. |
- A. An acid
- B. An oxidising agent
- C. Dehydrating agent
- D. A reducing agent
|