On an exam, students were shown the structure of an alkane and asked to give the IUPAC name of the compound. Of the following answers which were given, which corresponds to the correct IUPAC name of a real compound?
A) 2-ethyl-2-methylbutane
B) 2,2-dimethylbutane
C) 2,2-diethylbutane
D) none of them
B
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A mixture of cyan and yellow inks on a printed page appears
A. magenta. B. green. C. yellow. D. orange.
Members of the baby-boom generation make up ____% of all adult Americans.
A. 6 B. 16 C. 25 D. 36 E. 46
Our detailed knowledge of the glacial cycles and their duration is based primarily on ________
A) climate records B) ice cores C) land sediments D) seafloor sediments
Which numbered feature on this figure is a scarp?
A. 1, a linear or curved scar marking where the slide pulled away from the hill B. 2, small fractures within the sliding block C. 3, the intact layers below the rock slide D. 4, the front of the slide, where it overruns the land surface E. 5, a valley or other open space in front of the slide