化學 2008 年 DSE、CE 選擇題

1.

Which of the following statements concerning acid rain is INCORRECT?

2.

J and Q are two alkaline earth metals in the Periodic Table. If the atomic number of J is x, then the atomic number of Q could be

3.

Consider the ionic equation below: 2MnO₄⁻ + x Sn²⁺ + y H⁺ → 2Mn²⁺ + x Sn⁴⁺ + 8H₂O What is the value of x ?

4.

In which of the following compounds is the oxidation number of nitrogen lowest ?

5.

An organic compound has the following structure:

The systematic name of this compound is

6.

30.0 cm³ of 0.10 M KOH is completely neutralized by 20.0 cm³ of dilute H₂SO₄ to form K₂SO₄ solution. What is the molarity of the salt solution obtained?

7.

Nitrogen, instead of air, is used to fill the packets of potato chips. It is because

8.

Which of the following has the greatest number of ions ?

9.

In which of the following processes does sulphur dioxide act as a reducing agent ?

10.

Green patches appear on the surface of a metallic statue in a museum. It can be deduced that the statue may contain