Multiple choice

Match the entries in Column-I (elements) with those in Column-II (frequent uses) ||| |---|---| |Column-I |Column-II| |a. Boron|1. Construction material| |b. Aluminium|2. Coatings| |c. Gallium|3. Fibreglass production| |d. Indium|4. LED lighting|

  1. a - 3, b - 1, c - 4, d - 2

  2. a - 2, b - 1, c - 4, d - 3

  3. a - 3, b - 4, c - 1, c - 2

  4. a - 4, b - 2, c - 3, d - 1

  5. a - 2, b - 4, c - 3, d - 1
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A Correct answer
Explanation

A common application of boron is in fibreglass production. Fiberglass is an immensely versatile material due to its light weight, inherent strength, weather-resistant finish and variety of surface textures. Aluminium is a metal with numerous familiar uses in everyday life. Aluminium is most often encountered in construction materials, in electrical devices, especially as the conductor in cables, and in tools and vessels for cooking and preserving food. A major application of gallium is in LED lighting. Indium is used for coatings, usually combined as indium tin oxide (ITO). Hence, the correct sequence of codes is a - 3, b - 1, c - 4, d - 2.

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