Question : Silk fibre chemically is:
Option 1: carbohydrate
Option 2: Fat
Option 3: Protein
Option 4: Cellulose
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Correct Answer: Protein
Solution : The correct option is - protein
Silk is primarily composed of fibroin, a protein based polymer. Chemically, fibroin consists of amino acids, including glycine, alanine, and serine, linked together in a specific sequence. These amino acids form the repeating units of the fibroin protein chain. Additionally, silk fibers often contain a coating of sericin, which is another protein that binds the fibroin strands together and gives silk its characteristic luster. So, chemically, silk is primarily a protein-based fiber composed of fibroin and sericin.
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Question : Pick out the correct match:
Option 1: Fleshy foods - Calcium and Protein
Option 2: Fish - Starch and Vitamin
Option 3: Milk - Fibre and Minerals
Option 4: Egg yolk - Protein and Fat
Question : The food in the onion is stored in the form of _____.
Option 1: cellulose
Option 2: protein
Option 3: starch
Option 4: sugar
Question : Which of the following fibres is considered as the strongest natural fibre ?
Option 1: Cotton
Option 2: Jute
Option 3: Wool
Option 4: Silk
Question : Silk is obtained from:
Option 1: Mulberry tree
Option 2: Saliva of the silk worm
Option 3: Larvae of silk worm
Option 4: Cocoon of silk worm
Question : In which of the following classes can we put Adrenaline?
Option 1: Hormone
Option 2: Enzyme
Option 4: Fat
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