MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 40 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Normally, the ratio of ammonia and chlorine in chloramine is? |
| A. | 1:1 |
| B. | 1:2 |
| C. | 1:4.5 |
| D. | 1:3.5 |
| Answer» D. 1:3.5 | |
| 2. |
The process of chlorination with hypochlorites is called ___________ |
| A. | Super chlorination |
| B. | Pre chlorination |
| C. | Post chlorination |
| D. | Hypo-chlorination |
| Answer» E. | |
| 3. |
Bleaching powder contains ______ of available chlorine. |
| A. | 16% |
| B. | 33.3% |
| C. | 66.6% |
| D. | 99.9% |
| Answer» C. 66.6% | |
| 4. |
What is the chemical formula of bleaching powder? |
| A. | Ca (OCl)2 |
| B. | Ca (OCl) |
| C. | Ca (OCl)3 |
| D. | CaCl2 |
| Answer» B. Ca (OCl) | |
| 5. |
The permissible limit of free residual chlorine is ___________ |
| A. | 0.02ppm |
| B. | 0.2ppm |
| C. | 1ppm |
| D. | 2ppm |
| Answer» C. 1ppm | |
| 6. |
The chlorine, which serves as a disinfectant is ___________ |
| A. | Free chlorine |
| B. | Free Residual chlorine |
| C. | Chlorine demand |
| D. | Residual demand |
| Answer» C. Chlorine demand | |
| 7. |
Chlorine which gets consumed in the oxidation of impurities before disinfection is ______________ |
| A. | Free chlorine |
| B. | Residual chlorine |
| C. | Chlorine demand |
| D. | Residual demand |
| Answer» D. Residual demand | |
| 8. |
Which of the following is termed as free available chlorine? |
| A. | Hypochlorous acid |
| B. | Hypochlorite ions |
| C. | Molecular chlorine |
| D. | Hypochlorous acid, Hypochlorite ions, Molecular chlorine |
| Answer» E. | |
| 9. |
The step in which Cl-Cl bond homolysis occurs is called __________ |
| A. | Initiation step |
| B. | Propagation step |
| C. | Intermediate step |
| D. | Termination step |
| Answer» B. Propagation step | |
| 10. |
Chlorination of cyclobutane gives which among the following in addition to hydrogen chloride? |
| A. | Cyclobutyl chloride |
| B. | Cyclobutyl chlorite |
| C. | 1-chlorobutene |
| D. | 1,1-chlorobutene |
| Answer» C. 1-chlorobutene | |
| 11. |
p-nitrotoluene on reaction with chlorine forms hydrogen chloride and __________ |
| A. | p-Nitrobenzyl chloride |
| B. | o-Nitrobenzyl chloride |
| C. | m-Nitrobenzyl chloride |
| D. | Nitrobenzyl chloride |
| Answer» B. o-Nitrobenzyl chloride | |
| 12. |
In the presence of red phosphorous, chlorine converts the fatty acids having alpha hydrogen atoms into __________ |
| A. | Halo acids |
| B. | Alpha-halo acids |
| C. | Alpha,alpha-dihalo acids |
| D. | Trihalo acids |
| Answer» C. Alpha,alpha-dihalo acids | |
| 13. |
Which among the following on chlorination undergoes substitution at the alkyl group? |
| A. | Ethers |
| B. | Hydroxyl groups |
| C. | Carbonyl compounds |
| D. | Carboxylic acids |
| Answer» B. Hydroxyl groups | |
| 14. |
Identify the one which is not a type of chlorination? |
| A. | Free radical chlorination |
| B. | Electrophobic chlorination |
| C. | Ketone chlorination |
| D. | Chlorine addition reaction |
| Answer» C. Ketone chlorination | |
| 15. |
Methane reacts more readily with chlorine than with Fluorine. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
The methyl chloride undergoes substitution to form __________ |
| A. | CHCl |
| B. | CH2Cl |
| C. | CHCl2 |
| D. | CH2Cl2 |
| Answer» E. | |
| 17. |
When chlorine gas reacts with methane, Which of the product is formed? |
| A. | CHCl |
| B. | CH2Cl |
| C. | CH3Cl |
| D. | CH4Cl |
| Answer» D. CH4Cl | |
| 18. |
WHAT_IS_THE_CHEMICAL_FORMULA_OF_BLEACHING_POWDER??$ |
| A. | Ca (OCl)<sub>2</sub> |
| B. | Ca (OCl) |
| C. | Ca (OCl)<sub>3</sub> |
| D. | CaCl<sub>2</sub> |
| Answer» B. Ca (OCl) | |
| 19. |
CHLORINATION_OF_CYCLOBUTANE_GIVES_WHICH_AMONG_THE_FOLLOWING_IN_ADDITION_TO_HYDROGEN_CHLORIDE?$ |
| A. | Cyclobutyl chloride |
| B. | Cyclobutyl chlorite |
| C. | 1-chlorobutene |
| D. | 1,1-chlorobutene |
| Answer» C. 1-chlorobutene | |
| 20. |
The process of chlorination with hypochlorites is called$ |
| A. | Super chlorination |
| B. | Pre chlorination |
| C. | Post chlorination |
| D. | Hypo-chlorination |
| Answer» E. | |
| 21. |
Bleaching_powder_contains________of_available_chlorine.$ |
| A. | 16% |
| B. | 33.3% |
| C. | 66.6% |
| D. | 99.9% |
| Answer» C. 66.6% | |
| 22. |
The_step_in_which_Cl-Cl_bond_homolysis_occurs_is_called:$ |
| A. | Initiation step |
| B. | Propagation step |
| C. | Intermediate step |
| D. | Termination step |
| Answer» B. Propagation step | |
| 23. |
What is the contact period for disinfection with chloramine? |
| A. | 1hour |
| B. | 2hours |
| C. | 3hours |
| D. | 4hours |
| Answer» C. 3hours | |
| 24. |
Which type of chloramine is formed when pH of water is 4.4? |
| A. | Monachloramine |
| B. | Dichloramine |
| C. | Trichloramine |
| D. | Both monochloramine and dichloramine |
| Answer» C. Trichloramine | |
| 25. |
Normally, the ratio of ammonia and chlorine in chloramine is |
| A. | 1:1 |
| B. | 1:2 |
| C. | 1:4.5 |
| D. | 1:3.5 |
| Answer» D. 1:3.5 | |
| 26. |
The permissible limit of free residual chlorine i? |
| A. | 0.02ppm |
| B. | 0.2ppm |
| C. | 1ppm |
| D. | 2ppm |
| Answer» C. 1ppm | |
| 27. |
p-nitrotoluene on reaction with chlorine forms hydrogen chloride an? |
| A. | p-Nitrobenzyl chloride |
| B. | o-Nitrobenzyl chloride |
| C. | m-Nitrobenzyl chloride |
| D. | Nitrobenzyl chloride |
| Answer» B. o-Nitrobenzyl chloride | |
| 28. |
The chlorine, which serve as a disinfectant is |
| A. | Free chlorine |
| B. | Free Residual chlorine |
| C. | Chlorine demand |
| D. | Residual demand |
| Answer» C. Chlorine demand | |
| 29. |
Chlorine in the presence of which among the following generates positively charged species? |
| A. | Ferric chloride |
| B. | Anhydrous ferric chloride |
| C. | Ferrous chloride |
| D. | Anhydrous ferrous chloride |
| Answer» C. Ferrous chloride | |
| 30. |
Chlorine which gets consumed in the oxidation of impurities before disinfection is |
| A. | Free chlorine |
| B. | Residual chlorine |
| C. | Chlorine demand |
| D. | Residual demand |
| Answer» D. Residual demand | |
| 31. |
In the presence of red phosphorous, chlorine converts the fatty acids having alpha hydrogen atoms into |
| A. | Halo acids |
| B. | Alpha-halo acids |
| C. | Alpha,alpha-dihalo acids |
| D. | Trihalo acids |
| Answer» C. Alpha,alpha-dihalo acids | |
| 32. |
The hypochlorous acid is ______ times effective as hypochorite ions. |
| A. | 10 |
| B. | 30 |
| C. | 50 |
| D. | 80 |
| Answer» E. | |
| 33. |
Which among the following on chlorination undergoes substitution at the alkyl group |
| A. | Ethers |
| B. | Hydroxyl groups |
| C. | Carbonyl compounds |
| D. | Carboxylic acids |
| Answer» B. Hydroxyl groups | |
| 34. |
At what pH, chlorine in water acts as only hypochlorite ions? |
| A. | <5 |
| B. | >5 |
| C. | >10 |
| D. | <3 |
| Answer» D. <3 | |
| 35. |
Identify the one which is not a type of chlorination |
| A. | Free radical chlorination |
| B. | Electrophobic chlorination |
| C. | Ketone chlorination |
| D. | Chlorine addition reaction |
| Answer» C. Ketone chlorination | |
| 36. |
When the pH is between 5 and 10, the chlorine in the water acts as ______ |
| A. | Hypochlorous acid |
| B. | Hypochlorite ions |
| C. | Molecular chlorine |
| D. | Hypochlorous acid hypochlorite ions |
| Answer» E. | |
| 37. |
Methane reacts more readily with chlorine than with Fluorine. State true or false |
| A. | True |
| B. | False |
| Answer» C. | |
| 38. |
At what pH, chlorine exists as molecular chlorine? |
| A. | 3 |
| B. | 5 |
| C. | <5 |
| D. | <10 |
| Answer» D. <10 | |
| 39. |
The methyl chloride undergoes substitution to form |
| A. | CHCl |
| B. | CH<sub>2</sub>Cl |
| C. | CHCl<sub>2</sub> |
| D. | CH<sub>2</sub>Cl<sub>2</sub> |
| Answer» E. | |
| 40. |
When chlorine gas reacts with methane, the product formed is |
| A. | CHCl |
| B. | CH<sub>2</sub>Cl |
| C. | CH<sub>3</sub>Cl |
| D. | CH<sub>4</sub>Cl |
| Answer» D. CH<sub>4</sub>Cl | |