Group 17

What is the meaning of halogens in Greek words?

• Acid-maker

• Basic-maker

• Salt-maker

• Sugar-maker

Which element has a yellow colour at room temperature?

• Fluorine

• Chlorine

• Bromine

• Iodine

Which of the following is a solid at room temperature?

• Fluorine

• Chlorine

• Bromine

• Iodine

Which of the following properties decreases going down the group?

• Boiling point

• Reactivity

• Melting point

• Atomic radius

Which of the following has the lower van der waals forces than chlorine?

• fluorine

• bromine

• iodine

• astatine

Which of the following is correct relating to volatility of halogens?

• Volatility increases going down the group

• Volatility decreases going down the group

• Volatility is not affected by van der waals forces

• Volatility of halogens is not vary

Which one of the following is the correct reaction between halogens and hydrogen?

• $H\ +\ Cl\ \rightarrow\ HCl$

• $\frac{\text{1}}{\text{2}}H_2\ +\frac{\text{1}}{\text{2}}Cl_2\ \rightarrow HCl$

• $H_2\ +\ Cl_2\ \rightarrow\ 2HCl$

• $H_2\ +\ Cl_2\ \rightarrow\ H_2Cl_2$

What happens when hydrogen reacts with chlorine?

• explode in bright sunlight but react slowly in the dark

• react slowly on heating with a catalyst

• combines partially and very slowly

• does not react at all

Which of the following has the highes thermal stability?

• HF

• HCl

• HBr

• HI

Which of the following displacement reaction is correct?

• $Cl_2\ +2HF\ \rightarrow\ 2HCl\ +\ F_2$

• $Cl_2\ +\ 2KI\ \rightarrow\ 2KCl\ +\ I_2$

• $Br_2\ +\ 2HCl\ \rightarrow\ 2HBr\ +\ Cl_2$

• $Br_2\ +\ 2NaF\ \rightarrow\ 2NaBr\ +\ F_2$