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Chirality (chemistry): Quiz


Question 1: Tertiary ________ (see image) are chiral in a way similar to carbon compounds: The nitrogen atom bears four distinct substituents counting the lone pair.

Question 2: [6] The term chirality itself was coined by ________ in 1873.
James Prescott JouleSir George Stokes, 1st BaronetWilliam Thomson, 1st Baron KelvinIsaac Newton

Question 3: Spearmint leaves and caraway seeds, respectively, contain L-________ and D-carvone - enantiomers of carvone.
Acetic acidCarvoneHydrogen peroxideEthanol

Question 4: Two mirror images of a chiral molecule are called enantiomers or optical ________.

Question 5: A chiral molecule is a type of ________ that lacks an internal plane of symmetry and has a non-superimposable mirror image.

Question 6: This is the basis of ________ (CD) spectroscopy.
Circular dichroismBiological small-angle scatteringX-ray crystallographyProtein structure

Question 7: Replacing one of the two 1H atoms at the CH2 position of benzyl alcohol with a ________ (²H) makes that carbon a stereocenter.

Question 8: For example, they will migrate with identical Rf in thin layer chromatography and have identical retention time in ________.
High performance liquid chromatographyLiquid chromatography-mass spectrometrySize exclusion chromatographyGas-liquid chromatography

Question 9: Human ________ are perhaps the most universally recognized example of chirality: The left hand is a non-superposable mirror image of the right hand; no matter how the two hands are oriented, it is impossible for all the major features of both hands to coincide.
ForearmArmUpper limbHand

Question 10: [4] Artificial composite materials displaying the analog of optical activity but in the ________ region were introduced by J.C.
Ku bandX-rayRadio wavesMicrowave


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