| 1 |
Some organic compound are soluble in water due to the presence of . |
- A. -OH
- B. H<sup>+</sup>
- C. Botha a and b
- D. Covalent bond
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| 2 |
The formula which represents the actual number of atoms in one molecule of organic compound is called. |
- A. Molecular formula
- B. Structural formula
- C. Condensed formula
- D. Dot and cross formula
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| 3 |
Molecular formula of butane is |
- A. C<sub>4</sub>H<sub>8</sub>
- B. C<sub>4</sub>H<sub>10</sub>
- C. C<sub>4</sub>H<sub>12</sub>
- D. C<sub>4</sub>H<sub>6</sub>
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| 4 |
Ethen is prepared by heating a mixture of ethanol and excess of concentrated sulphuric acid at: |
- A. 150°C
- B. 180°C
- C. 250°C - 300°C
- D. 400°C - 450°C
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| 5 |
Which one of these pollutants are not found in car exhaust fumes? |
- A. CO<sub>2</sub>
- B. O<sub>3</sub>
- C. NO<sub>2</sub>
- D. SO<sub>2</sub>
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| 6 |
The % age of carbon in coke is |
|
| 7 |
Percentage of nitrogen in atmosphere is: |
- A. 20.94%
- B. 78.09%
- C. 0.93%
- D. 0.03%
|
| 8 |
An equilibrium is achievable only in a: |
- A. big system
- B. small system
- C. open system
- D. closed system
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| 9 |
The reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are |
- A. mol<sup>-2</sup>
- B. dm<sup>3</sup>
- C. mol<sup>2</sup>
- D. mol dm<sup>-1</sup>
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| 10 |
Boiling point of water is: |
- A. 0<sup>o</sup>C
- B. 25<sup>o</sup>C
- C. 80<sup>o</sup>C
- D. 100<sup>o</sup>C
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