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Q: Which of the following is a natural flame retardant?
  • A. RNA
  • B. Skin
  • C. DNA
  • D. Flowers
Correct Answer: Option C - DNA is a natural flame retardant. DNA (Deoxyribonucleic Acid). It is made of an alternating phosphate and sugar backbone with nitrogen bases- A, T, G, C. The nitrogen containing bases in DNA release ammonia, which in turn dilutes flammable gases and inhibits combustion reactions.
C. DNA is a natural flame retardant. DNA (Deoxyribonucleic Acid). It is made of an alternating phosphate and sugar backbone with nitrogen bases- A, T, G, C. The nitrogen containing bases in DNA release ammonia, which in turn dilutes flammable gases and inhibits combustion reactions.

Explanations:

DNA is a natural flame retardant. DNA (Deoxyribonucleic Acid). It is made of an alternating phosphate and sugar backbone with nitrogen bases- A, T, G, C. The nitrogen containing bases in DNA release ammonia, which in turn dilutes flammable gases and inhibits combustion reactions.