MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Bachelor of Pharmacy (BDot Pharma) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a solution of a compound (30.0 g/100 mL of solution) has a measured rotation of +15 in a 2 dm tube, the specific rotation is: |
| A. | +50 |
| B. | +25 |
| C. | +15 |
| D. | +7.5 |
| Answer» C. +15 | |
| 2. |
Of the compounds which correspond to the general name "dichlorocyclobutane", how many are optically active? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 3. |
What is the molecular formula for the alkenes of smallest molecular weight which possesses a stereogenic center? |
| A. | C4H10 |
| B. | C5H12 |
| C. | C6H14 |
| D. | C7H16 |
| Answer» E. | |
| 4. |
For the generalized structure BrCH2CHClCH2CHClCH2Br there exists what number of stereoisomers? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 5. |
How many different compounds are there which correspond to the general name "3-(1- methylbutyl) cyclobutanol ? |
| A. | 2 |
| B. | 4 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 6. |
Thiophene is reduced with Raney nickel (Ni) which results in removal of sulphur to form______. |
| A. | 2 thiolen |
| B. | 3 thiolen |
| C. | n Butane |
| D. | Tetra hydro thiophene |
| Answer» D. Tetra hydro thiophene | |
| 7. |
Pyrrole undergoes sulfonation in presence of _______to produce pyrrole 2 sulfonic acid. |
| A. | Conc. Sulphuric acid |
| B. | SO3 and pyridine |
| C. | Dilute sulphuric acid/pyridine |
| D. | SO3 and ethanol |
| Answer» C. Dilute sulphuric acid/pyridine | |
| 8. |
Identify the reaction: when furan react with aryl diazonium chloride in the presence of strong alkali to produce 2 aryl furan. |
| A. | Mercuration |
| B. | Gattermann Koch reaction |
| C. | Kolbe reaction |
| D. | Gomberg reaction |
| Answer» E. | |
| 9. |
Oxidation of pyrrole in presence of chromium oxide (Cr2O3) and acetic acid produce_______. |
| A. | Maleinimide |
| B. | Maleic acid |
| C. | Pyrrole N-oxide |
| D. | None of the above |
| Answer» B. Maleic acid | |
| 10. |
Which would be the product when furan undergoes sulfonation in the presence of SO3 and pyridine? |
| A. | Furan 2 sulfolic acid |
| B. | Furan 3 sulfonic acid |
| C. | Mixture of (a) & (b) |
| D. | None of the above |
| Answer» B. Furan 3 sulfonic acid | |
| 11. |
__________ is the use of an optically active reagent or catalyst to convert an optically inactive starting material into an optically active product. |
| A. | Asymmetric induction |
| B. | Racemization |
| C. | Optical reduction |
| D. | Meso effection |
| Answer» B. Racemization | |
| 12. |
Which of the following groups has the highest priority according to the Cahn-Ingold-Prelog sequence rules? |
| A. | CH3 |
| B. | CH2Cl |
| C. | CH2OH |
| D. | CHO |
| Answer» E. | |
| 13. |
Those stereoisomers which can be interconverted only by breaking and remaking of covalent bonds are called as____ |
| A. | Chain isomers |
| B. | Positional isomers |
| C. | Configurational isomers |
| D. | Conformational isomers |
| Answer» D. Conformational isomers | |
| 14. |
Five membered rings come under which category of heterocycle classification on the basis of chemical behavior? |
| A. | -excessive heterocycle |
| B. | -deficient heterocycle |
| C. | -equivalent heterocycle |
| D. | Can t say about the five membered rings |
| Answer» B. -deficient heterocycle | |
| 15. |
If you wanted to form 2,3,4,5-tetrabromopyrrole from pyrrole, which of the following conditions would be the best choice? |
| A. | Br2 at 273K |
| B. | Br2 at298 K |
| C. | Br2 in the presence of radical initiator |
| D. | Br2 in the presence of Lewis acid |
| Answer» D. Br2 in the presence of Lewis acid | |
| 16. |
Which product will be produced when pyrrole undergoes catalytic reduction in presence of hydrogen gas and Ni metal? |
| A. | 2 pyrroline |
| B. | 3 pyrroline |
| C. | Pyrrolidine |
| D. | All of the above |
| Answer» D. All of the above | |