Ethylene has the formula C2H4. Which of the following is a correct description of ethylene?
A) Ethylene has only single bonds.
B) Ethylene has one double bond.
C) Ethylene has one triple bond.
D) None of these is correct.
B
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What type of deformation is shown in this photograph?
A) Displacement
B) Rotation
C) Internal strain of the rock
D) Columnar joints
After the Gulf of Mexico began to form in the Late Triassic, the shallow restricted basin became
the site of extensive _______ deposition. Fill in the blank(s) with the appropriate word(s).
The largest amount of tropical rainforest is on the continent of ________
A) Africa B) Asia C) South America D) North America E) Australia
Compared with falling on a wooden floor, a wine glass may not break when it falls to a carpeted floor because of the
A) lesser impulse in stopping. B) longer time to stop. C) both A and B D) neither A nor B