Home PYQs UPPSC UPPSC MCQs Prelims 2023 (GS Paper I)

Question

Which among the following is a constituent of natural silk?

  1. Phosphorus
  2. Nitrogen
  3. Magnesium
  4. Potassium

Answer:

Option B: Nitrogen

Detailed Solution:

The correct answer is “Nitrogen”.

Natural silk is primarily made of proteins, and proteins are composed of amino acids, which contain nitrogen. The primary protein in silk is fibroin, which is rich in nitrogen as part of its amino acid composition.