Carbohydrates
Carbohydrates are the organic compounds that are obtained in foods and living matters in the shape of sugars, cellulose, and starch. The general formula of carbohydrates is Cn(H2O)2. The ratio of H and O present in carbohydrates is identical to water.
Starch
Starch is a polysaccharide carbohydrate that belongs to the category of polysaccharide carbohydrates.
Mutarotation
The rotation of a particular structure of the chiral compound because of the epimerization is called mutarotation. It is the repercussion of the ring chain tautomerism. In terms of glucose, this can be defined as the modification in the equilibrium of the α- and β- glucose anomers upon its dissolution in the solvent water. This process is usually seen in the chemistry of carbohydrates.
L Sugar
A chemical compound that is represented with a molecular formula C6H12O6 is called L-(-) sugar. At the carbon’s 5th position, the hydroxyl group is placed to the compound’s left and therefore the sugar is represented as L(-)-sugar. It is capable of rotating the polarized light’s plane in the direction anticlockwise. L isomers are one of the 2 isomers formed by the configurational stereochemistry of the carbohydrates.
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Multiple choice. Circle the best choice: [Hint draw the named molecule before answering.]
2. How many ethyl groups are found in 3,4-diethylhexane
1. In 2,4-hexadiyne how many atoms lie in a straight line?
April 25, 2022
(a] two [b] three [c] four [d] five [e] six
(a] two (b] three [c] four [d] five [e] Six
3. In 1-pentene-3-yne how many atoms lie in a plane
[a] four [b] five
[c] six [d] seven [e] eight
4. 1,2,3-heptanetriol has how many stereoisomers.
[a] three [b] four [c] five
[d] six [e] seven
S. The reason chloroacetic acid has a lower pKa than acetic acid is
[aj resonance [b] chirality [c] inductive effect [d] conformation
6. Human steroid hormones derived from cholesterol are known to have all but which one of the
following carbon skeleta. Which one is not found?
[a] 18 [b] 19 [c] 20 [d] 21 [e] 24
7. A compound which contains two chiral carbons but is superimposable on its mirror image is called
[a] a stereoisomer [b] an enantiomer [c] a meso form [d] an R,R/S,S pair [e] Z/E isomers
8. In your mouth and the taste of acids (hydronium ions) are
[a] sweet [b] sour [c] bitter [d] salty [e] spicy hot
9. When bicarbonate anion [HCO,] gains one proton in water, it will form an equilibrium with
[a] tricarbonate ion [b] carbonic acid [c] acetic acid [d] formic acid
10. Catalytic hydrogenation of a diene gives which of the following:
[a] a saturated hydrocarbon [b] an alkane [c] a triene [d] all of the above [e] A and B only.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdf759e51-a04e-400b-b54c-c0d008df5757%2F3ef41027-8a95-45ff-924c-83d2419575d6%2Ftocky1_processed.jpeg&w=3840&q=75)
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