2005 年
化學 · 共 46 題 · 點擊選項即時核對答案
What is the systematic name of the following hydrocarbon?
Upon cracking, one molecule of decane (C₁₀H₂₂) gives two molecules of propene and one molecule of an alkane (X). What is X?
The table below gives some information about certain components in a sample of liquefied air.
| Component | Boiling point /°C |
|---|---|
| argon | −186 |
| nitrogen | −196 |
| oxygen | −183 |
In what order are these components distilled out when the sample undergoes fractional distillation ?
What is the type of reaction involved when hydrogen bromide reacts with ethene to form bromoethane?
When a flame test is performed on copper(II) chloride, what is the colour of the flame observed?
Consider the information given in the table below:
| Element | Atomic number |
|---|---|
| w | 6 |
| x | 17 |
| y | 18 |
| z | 20 |
Which of the following pairs of elements would react with each other most readily ?
Which of the following statements concerning van der Waals' forces is correct ?
Which of the following is NOT a redox reaction ?
Which of the following chlorides has the highest melting point ?
Directions: Q.10 and Q.11 refer to the following experiment. Rust indicator solution was poured into the following glass dishes to cover the iron nails, which were wrapped with different metal strips. The dishes were allowed to stand in air for some time.
If the iron nail rusts, what would be the colour of the rust indicator around the nail ?