| 1 |
Each of the following is true for white and red phosphorus except one. |
- A. Both are soluble in CCl4
- B. Both can be oxidized by heating in air
- C. Both consists of same kind of atoms
- D. Both can be converted into each other
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| 2 |
Which one of the following does not react with dilute sulphuric acid. |
- A. Mg (OH)2
- B. Mg
- C. MgO
- D. Mg(NO3)2
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| 3 |
NH4NO3 on heating at 200 <sup>o</sup>C changes to |
- A. N2O
- B. NO
- C. NO2
- D. N2O4
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| 4 |
An element has oxidation state -2, +4, +6 in its compounds. In which group in the periodic table is this element likely to be. |
- A. Grooup III A
- B. Group IV A
- C. Group V A
- D. Group VI A
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| 5 |
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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| 6 |
Chemical formula of stibnite on. |
- A. BaSO4
- B. Sb2S3
- C. FeS2
- D. ZnS
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| 7 |
In group VA elements the most electronegative elements is. |
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| 8 |
Role of H2S in the given chemical reaction is H2S + I2--------------- 2HI+S |
- A. Oxidising agent
- B. Reducing agent
- C. Dehydrating agent
- D. As an acid
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| 9 |
The brown gas formed, when metal reduce HNO<sub>3</sub> |
- A. NO
- B. NO<sub>2</sub>
- C. N<sub>2</sub>O<sub>3</sub>
- D. N<sub>2</sub>O<sub>5</sub>
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| 10 |
Which catalyst is used in contact process |
- A. Fe<sub>2</sub>O<sub>3</sub>
- B. V<sub>2</sub>O<sub>5</sub>
- C. SO<sub>3</sub>
- D. Ag<sub>2</sub>O
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