Which one of the following statements is NOT true of all alkanes?
A) All alkanes burn to produce carbon dioxide and water.
B) All alkanes consist of carbon and hydrogen.
C) All alkanes exist as two or more isomers.
D) All alkanes fit the general molecular formula CnH₂n₊₂.
Correct Answer:
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Q30: The chemical formula of cyclopentane is
A)C₅H₆.
B)C₅H₈.
C)C₅H₁₀.
D)C₅H₁₂.
Q31: Alkanes are often called
A)unsaturated hydrocarbons.
B)saturated hydrocarbons.
C)carbohydrates.
D)saturated fats.
Q32: The condensed structural formula for the molecule
Q33: Compounds with the same number and kinds
Q34: The condensed structural formula for the molecule
Q36: The formula for cyclopropane is
A)C₃H₈.
B)C₇H₁₆.
C)C₃H₆.
D)C₇H₁₂.
Q37: The compounds CH₃CH₃ and CH₃CH₂CH₃ are
A)isomers.
B)allotropes.
C)isotopes.
D)homologs.
Q38: The formula for heptene is
A)C₇H₁₄.
B)C₃H₈.
C)C₄H₁₀.
D)C₅H₁₂.
Q39: Which of the following alkanes will have
Q40: The chemical formula of cyclohexane is
A)C₆H₆.
B)C₆H₈.
C)C₆H₁₀.
D)C₆H₁₂.
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