Multiple choice

Choose the correct pair.

  1. Helium Nitrogen gas mixture - Artificial respiration for sea-divers

  2. Menganese bronze - Air-Craft building

  3. Thallium Bro-mide Crystals - Transmit Infrared radiation

  4. Platinum - Dental Filling

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Manganese bronze is a type of brass used in marine engineering and aircraft building due to its strength and corrosion resistance. Other options are incorrect or imprecise.