ES Kerboodle Test (MCQ's) Flashcards
Which precaution is not necessary in the event of an escape of chlorine?
- wear breathing apparatus
- wear eye protection
- avoid contact of the gas with skin
- keep away from naked flames
- keep away from naked flames
Which statement is not correct about a dynamic equilibrium?
- The concentration of reactants and products are equal
- There are reactions occuring all the time
- It only occurs in a closed system
- The rate of the forward reaction is equal to the rate of the back reaction.
- The concentration of reactants and products are equal
Which row describes the colours of the halogens in aqueous solution?
- C
Hydrogen iodide reacts as follows with conc. sulfuric acid.
8HI + H2SO4 –> 4I2 + H2S + 4H2O
Which row correctly describes the oxidation number changes of iodine and sulfur?
- B
Which substances are produced (with sodium sulfate) by the action of sulfuric acid on sodium chloride?
- HCl
- HCl, SO2, and Cl2
- HCl and Cl2
- HCl, H2S, and Cl2
- HCl
Which substance has the correct systematic name?
- D
Electrolysis of which substance will produce hydrogen at the cathode and oxygen at the anode?
- hydrochloric acid
- sodium sulfate solution
- potassium chloride solution
- molten sodium oxide
- sodium sulfate solution
Which statement is correct for the halogens chlorine, bromine, iodine, and their halides?
- bromide can oxidise iodine
- iodide is the best oxidising agent
- chlorine can oxidise bromide and iodide
- iodine can oxidise bromide and chloride
- chlorine can oxidise bromide and iodide
Which is not a use of chlorine?
- reducing metal oxides
- bleaching
- sterilising water
- killing bacteria
- reducing metal oxides
In which reaction does nitrogen have the largest change in oxidation state?
- N2 + 3H2 –> 2NH3
- 3Mg + 8HNO3 –> 3Mg(NO3)2 + 2NO + 4H2O
- Ca + 4HNO3 –> Ca(NO3)2 + 2NO2 + 2H2O
- 3NO3- + 8Al + 5OH- +18H2O –> 3NH3 + 8Al(OH)4-
- 3NO3- + 8Al + 5OH- +18H2O –> 3NH3 + 8Al(OH)4-
