Esters are commonly used as?
- Preservatives
- Flavouring agents & perfumes
- Fuels
- Fertilizers
Explanation
Flavorings and Fragrances:
Esters with distinctive, often fruity or floral, smells are used to create pleasant aromas in perfumes, cosmetics, and food products.
Solvents:
Many esters, such as ethyl acetate and butyl acetate, are used as industrial solvents in the production of paints, varnishes, and adhesives.
Polymers:
Esters form the basis of polyesters, which are used to create synthetic fibers for clothing, as well as plastics for bottles and cans.
Plasticizers:
Esters are added to rigid polymers like PVC to increase their flexibility, allowing for the production of soft and pliable materials like cling film.
Cosmetics:
In addition to fragrances, esters act as emollients, thickeners, and solvents in personal care products.
Lubricants:
Due to their lubricating properties, esters are used in lubricants.
Natural Applications
Fats and Oils: Naturally occurring fats and oils are fatty acid esters of glycerol.
Pheromones: Some esters found in nature act as pheromones.
Biological Molecules: Phosphoesters form the backbone of DNA molecules.
Related MCQs
- Temporary water connections
- Underground and permanent water-supply lines
- High-temperature steam lines
- Drainage of rainwater only
اس سوال کو وضاحت کے ساتھ پڑھیں
- 10–20 minutes
- 30–60 minutes
- 2–4 hours
- 12–24 hours
اس سوال کو وضاحت کے ساتھ پڑھیں
- Vertical drop fall
- Glacis fall
- Montague type fall
- Inglis fall
اس سوال کو وضاحت کے ساتھ پڑھیں
آکسیجن زیادہ تر عناصر کے ساتھ عمل کرکے دو عنصری مرکبات بناتی ہے جنہیں کیا کہتے ہیں؟
- Bases
- Oxides
- Acids
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
پانی اور کاربن ڈائی آکسائڈ کے سالمے مل کر کیا بناتے ہیں؟
- Nitric acid
- Carbonic acid
- Sulfuric acid
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
