Which of the Following Molecules Are Constitutional Isomers A) I, II, IV
B) II, III, IV
C) I

question 27

Multiple Choice

Which of the following molecules are constitutional isomers? $$\begin{array} { c c c c } \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { OH } & \mathrm { CH } _ { 3 } \mathrm { CH } ( \mathrm { OH } ) \mathrm { CH } _ { 3 } & \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { OCH } _ { 3 } & \mathrm { CH } _ { 3 } \mathrm { COCH } _ { 3 } \\\text { I } & \text { II } & \text { III } & \text { IV }\end{array}$$

• A) I, II, IV
• B) II, III, IV
• C) I, III, IV
• D) I, II, III

---

Definitions:

National Average

The average of a specific set of measurements or data points across the entire nation.

Confidence Interval

An estimate indicating the range within which a population parameter is likely to lie, with a certain degree of certainty, based on data from a smaller sample.

Margin of Error

An expression of the amount of random sampling error in survey results, indicating a range within which the true population parameter is expected to lie.

Sample Size

The number of individual observations or data points collected and used in a statistical analysis.