Objective Questions
All objective questions for CHM 102
Questions (1999)
| # | Question | Topic | Actions |
|---|---|---|---|
| 401 |
What does the prefix 'carboxy-' indicate?
|
IUPAC Nomenclature and Functional Group Classes of Organic Compounds | View |
| 402 |
What is the common name for CH3-O-CH3?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 403 |
What is the approximate bond angle around the oxygen atom in dimethyl ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 404 |
Which of the following is the best method for preparing unsymmetrical ethers?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 405 |
In the Williamson ether synthesis, which combination gives the best yield?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 406 |
What is the product of the reaction of sodium ethoxide (CH3CH2ONa) with methyl …
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 407 |
Which reagent is commonly used to deprotonate an alcohol to form an alkoxide fo…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 408 |
What is the industrial preparation method for diethyl ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 409 |
What is the major product when ethyl ether is heated with excess concentrated H…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 410 |
Which acid is most effective for cleaving ethers?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 411 |
What is a cyclic ether with a three-membered ring called?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 412 |
What is the common name for oxirane?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 413 |
How is ethylene oxide industrially prepared?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 414 |
What is the product of acid-catalyzed ring-opening of an epoxide with water?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 415 |
Why are epoxides much more reactive than acyclic ethers?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 416 |
What is the product of the reaction of epoxide with HBr (anhydrous)?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 417 |
What is a crown ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 418 |
Which of the following is a common cyclic ether solvent?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 419 |
What is the product when a Grignard reagent reacts with ethylene oxide, followe…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 420 |
In the Williamson ether synthesis, what byproduct is formed?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 421 |
What is the IUPAC name for CH3CH2OCH2CH3?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 422 |
What is the IUPAC name for CH3OCH2CH2CH3?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 423 |
Why do ethers have lower boiling points than alcohols of similar molecular weig…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 424 |
Are ethers generally soluble in water?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 425 |
Which of the following is a significant hazard of many ethers?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 426 |
What type of hybridization does the oxygen atom have in an ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 427 |
What is the product of the reaction of methyl tert-butyl ether (MTBE) with exce…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 428 |
What is the name for the cyclic ether with a 6-membered ring containing two oxy…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 429 |
What is the leaving group in the Williamson ether synthesis when using an alkyl…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 430 |
Which of the following statements about ethers is FALSE?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 431 |
What is the product of the reduction of an epoxide with LiAlH4?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 432 |
What is the common name for CH2=CH-O-CH3?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 433 |
What is the chemical formula of 18-crown-6?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 434 |
What is the major product when tert-butyl methyl ether is treated with excess H…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 435 |
Which of the following is a method for preparing epoxides from alkenes?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 436 |
What is the product when cyclohexene is treated with mCPBA?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 437 |
In the ring-opening of an epoxide under basic conditions (e.g., alkoxide), the …
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 438 |
What is the name of the reaction that converts a halohydrin to an epoxide?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 439 |
What is the product of the reaction of epoxide with ammonia?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 440 |
Why is tetrahydrofuran (THF) a good solvent for Grignard reagents?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 441 |
What is the IUPAC name for the compound with structure CH3-O-C6H5?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 442 |
Which of the following is a polar aprotic solvent commonly used in SN2 reaction…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 443 |
What is the product of the reaction of sodium phenoxide (C6H5O-Na+) with methyl…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 444 |
What is the name for a three-membered ring containing one oxygen atom?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 445 |
What is the name for a 4-membered cyclic ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 446 |
What is the name for a 5-membered cyclic ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 447 |
What is the name for a 6-membered cyclic ether?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 448 |
What is the product of the reaction of silver oxide (Ag2O) with an alkyl halide…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 449 |
Which of the following best describes the odor of many ethers?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 450 |
What is the major product when an epoxide is treated with a Grignard reagent?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 451 |
Which of the following is NOT a typical property of ethers?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 452 |
What is the common name for the cyclic ether dioxane?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 453 |
In the acidic cleavage of an unsymmetrical ether like CH3OCH2CH3 with HI, which…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 454 |
What is the hybridization of the carbon atoms in the ring of an epoxide?
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 455 |
What is the name for a compound with two ether groups on a benzene ring at posi…
|
General Chemistry II: Properties and Reactions of Ethers | View |
| 456 |
What is the inductive effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 457 |
Which of the following groups shows a negative inductive effect (-I effect)?
|
Introductory Reaction Mechanism and Kinetics | View |
| 458 |
Which of the following groups exhibits a positive inductive effect (+I effect)?
|
Introductory Reaction Mechanism and Kinetics | View |
| 459 |
What is the electromeric effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 460 |
Which of the following statements about the electromeric effect is TRUE?
|
Introductory Reaction Mechanism and Kinetics | View |
| 461 |
What is resonance (mesomeric) effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 462 |
What type of double bonds are said to be conjugated?
|
Introductory Reaction Mechanism and Kinetics | View |
| 463 |
Which of the following is an example of a conjugated system?
|
Introductory Reaction Mechanism and Kinetics | View |
| 464 |
In writing resonance structures, which of the following can be shifted?
|
Introductory Reaction Mechanism and Kinetics | View |
| 465 |
A group that donates electrons by resonance has what designation?
|
Introductory Reaction Mechanism and Kinetics | View |
| 466 |
Which of the following groups withdraws electrons by resonance (-M effect)?
|
Introductory Reaction Mechanism and Kinetics | View |
| 467 |
What is a free radical?
|
Introductory Reaction Mechanism and Kinetics | View |
| 468 |
How are free radicals formed from covalent bonds?
|
Introductory Reaction Mechanism and Kinetics | View |
| 469 |
What is the correct order of stability for free radicals?
|
Introductory Reaction Mechanism and Kinetics | View |
| 470 |
What is a carbocation?
|
Introductory Reaction Mechanism and Kinetics | View |
| 471 |
What is the correct order of stability for carbocations?
|
Introductory Reaction Mechanism and Kinetics | View |
| 472 |
What is a carbanion?
|
Introductory Reaction Mechanism and Kinetics | View |
| 473 |
What is the correct order of stability for carbanions?
|
Introductory Reaction Mechanism and Kinetics | View |
| 474 |
Which of the following species is the most stable?
|
Introductory Reaction Mechanism and Kinetics | View |
| 475 |
What type of arrow is used to show the shift of a pair of electrons in resonanc…
|
Introductory Reaction Mechanism and Kinetics | View |
| 476 |
What type of arrow is used to show the shift of a single electron?
|
Introductory Reaction Mechanism and Kinetics | View |
| 477 |
In a polar covalent bond like H-Cl, where is the electron cloud displaced?
|
Introductory Reaction Mechanism and Kinetics | View |
| 478 |
Which of the following best describes the inductive effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 479 |
Which of the following is NOT a characteristic of the inductive effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 480 |
What is the relative magnitude of +I effect among alkyl groups?
|
Introductory Reaction Mechanism and Kinetics | View |
| 481 |
What happens to the electrons in a multiple bond during the electromeric effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 482 |
Which of the following compounds contains isolated double bonds?
|
Introductory Reaction Mechanism and Kinetics | View |
| 483 |
In resonance structures, which of the following remains fixed?
|
Introductory Reaction Mechanism and Kinetics | View |
| 484 |
Which of the following is an example of a group with -I effect?
|
Introductory Reaction Mechanism and Kinetics | View |
| 485 |
How can a carbanion be formed from a C-H bond?
|
Introductory Reaction Mechanism and Kinetics | View |
| 486 |
What is the formal charge on a carbon atom in a carbocation?
|
Introductory Reaction Mechanism and Kinetics | View |
| 487 |
What is the formal charge on a carbon atom in a carbanion?
|
Introductory Reaction Mechanism and Kinetics | View |
| 488 |
Which of the following groups is electron-withdrawing by induction (-I) but ele…
|
Introductory Reaction Mechanism and Kinetics | View |
| 489 |
Which of the following is the most stable carbocation?
|
Introductory Reaction Mechanism and Kinetics | View |
| 490 |
Which of the following is the most stable free radical?
|
Introductory Reaction Mechanism and Kinetics | View |
| 491 |
Which of the following is the most stable carbanion?
|
Introductory Reaction Mechanism and Kinetics | View |
| 492 |
What type of bond cleavage produces free radicals?
|
Introductory Reaction Mechanism and Kinetics | View |
| 493 |
What type of bond cleavage produces carbocations and carbanions?
|
Introductory Reaction Mechanism and Kinetics | View |
| 494 |
In the resonance hybrid of 1,3-butadiene, what is the bond order between C2 and…
|
Introductory Reaction Mechanism and Kinetics | View |
| 495 |
What does a double-headed arrow between resonance structures indicate?
|
Introductory Reaction Mechanism and Kinetics | View |
| 496 |
Which separation technique is based on particle size and solubility, commonly u…
|
Isolation and Purification of Organic Compounds | View |
| 497 |
Which technique is used to remove a liquid solvent by heating, leaving behind a…
|
Isolation and Purification of Organic Compounds | View |
| 498 |
Distillation separates compounds based on differences in which physical propert…
|
Isolation and Purification of Organic Compounds | View |
| 499 |
Which type of distillation is used when the boiling points of the liquids in a …
|
Isolation and Purification of Organic Compounds | View |
| 500 |
In steam distillation, why do the liquids boil at a lower temperature than thei…
|
Isolation and Purification of Organic Compounds | View |