Chemistry · Oct / Nov 2017 · Paper 11 · Question 30

The diagram shows a circuit used to test the electrical conductivity of strips of solid materials. If the material conducts, the bulb lights. Strips of brass, nylon and zinc are each tested separately by connecting them into the circuit. For which strips does the bulb light?

1. Abrass, nylon and zinc
2. Bbrass and nylon only
3. Cnylon and zinc only
4. Dzinc and brass only

As printed in the paper