Which of the following cannot be used in electronic devices?

Aluminium gallium arsenide

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Indium gallium arsenide

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Gallium arsenide

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Quasicrystals.

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Solution

The correct option is D Quasicrystals.
Aluminum gallium arsenide, indium gallium arsenide, and gallium arsenide are used in Laser diodes, LEDs, whereas Quasicrystals have poor heat conductivity which makes them good insulators, so not used in electronic devices.

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