MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Boiling point of aromatic carboxylic acids are higher than that of comparable aliphatic carboxylic acids. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
If the boiling point of propanol is 370 K, predict the boiling point of acetic acid. |
| A. | 322 K |
| B. | 329 K |
| C. | 370 K |
| D. | 390 K |
| Answer» E. | |
| 3. |
What is the correct order of boiling points of the following? |
| A. | HCOOH > CH<sub>3</sub>COOH > C<sub>2</sub>H<sub>5</sub>COOH |
| B. | C<sub>2</sub>H<sub>5</sub>COOH > CH<sub>3</sub>COOH > HCOOH |
| C. | HCOOH > C<sub>2</sub>H<sub>5</sub>COOH > CH<sub>3</sub>COOH |
| D. | CH<sub>3</sub>COOH > HCOOH > C<sub>2</sub>H<sub>5</sub>COOH |
| Answer» C. HCOOH > C<sub>2</sub>H<sub>5</sub>COOH > CH<sub>3</sub>COOH | |
| 4. |
Which of the following is not a reason for carboxylic acids having higher boiling point than alcohols of comparable molecular masses? |
| A. | Presence of electron withdrawing carbonyl group |
| B. | Higher polarity of OH bond than in alcohols |
| C. | Formation of two hydrogen bonds to form cyclic dimers |
| D. | Presence of more alkyl groups in carboxylic acids |
| Answer» E. | |
| 5. |
As a result of intermolecular hydrogen bonding, carboxylic acids exists as ______ |
| A. | acetals |
| B. | aldols |
| C. | hemiacetals |
| D. | dimers |
| Answer» E. | |
| 6. |
The solubility of carboxylic acids _________ with the increase in size of alkyl groups. |
| A. | increases |
| B. | decreases |
| C. | remains same |
| D. | varies unpredictably |
| Answer» C. remains same | |
| 7. |
Benzoic acid is almost insoluble in which of the following solvents? |
| A. | Cold water |
| B. | Benzene |
| C. | Ether |
| D. | Alcohol |
| Answer» B. Benzene | |
| 8. |
Which among the following has the most unpleasant odour? |
| A. | Caproic acid |
| B. | Lauric acid |
| C. | Myristic acid |
| D. | Palmitic acid |
| Answer» B. Lauric acid | |
| 9. |
Which of the following aliphatic carboxylic acids is a solid at room temperature? |
| A. | Heptanoic acid |
| B. | Octanoic acid |
| C. | Nonanoic acid |
| D. | Decanoic acid |
| Answer» E. | |