| Date | November 2013 | Marks available | 3 | Reference code | 13N.3.sl.TZ0.10 |
| Level | SL | Paper | 3 | Time zone | TZ0 |
| Command term | Suggest | Question number | 10 | Adapted from | N/A |
Question
Liquid-crystal displays are used in many electronic appliances. The molecule below has liquid-crystal display properties.
Suggest three reasons why the molecule is suitable for use in liquid-crystal display devices.
Markscheme
rod shape / rigid;
chemically stable (due to hydrocarbon rings and chain);
polar (due to the presence of F) / OWTTE;
can change orientation / rapid switching in electric field/when voltage is applied;
Examiners report
Examiners reported an average understanding of liquid crystal properties.
