Halogen Displacement and Reactivity Quiz

Which of the following halogens is the most reactive?

• Iodine

• Bromine

• Chlorine

• Fluorine

What is the general trend in reactivity as you move down the group of halogens in the periodic table?

• Reactivity increases

• Reactivity decreases

• Reactivity remains the same

• Reactivity first increases then decreases

Which halogen can displace bromine from a solution of potassium bromide?

• Iodine

• Chlorine

• Fluorine

• Astatine

What is the colour of chlorine gas?

• Red

• Greenish-yellow

• Purple

• Colourless

Which of the following is a property of halogens?

• They are all metals

• They are good conductors of electricity

• They form salts when combined with metals

• They are all gases at room temperature

In a displacement reaction, which halogen will displace iodine from potassium iodide?

• Bromine

• Chlorine

• Fluorine

• Astatine

What is the state of iodine at room temperature?

• Gas

• Liquid

• Solid

• Plasma

Which halogen is used in water purification due to its reactivity?

• Iodine

• Bromine

• Chlorine

• Fluorine

What is the molecular formula for chlorine gas?

Which of the following halogens is least reactive?

• Fluorine

• Chlorine

• Bromine

• Iodine