McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Pharmacy (B. Pharma) , Pharmacy .
Chapters
| 1. |
Which represents an alkane……… |
| A. | C5H8 |
| B. | C6H8 |
| C. | C9H10 |
| D. | C7H16 |
| Answer» D. C7H16 | |
| 2. |
The decreasing order of boiling points is ………. |
| A. | n-Pentane > iso-Pentane > neo-Pentane |
| B. | iso-Pentane > n-Pentane > neo-Pentane |
| C. | neo-Pentane > iso-Pentane > n-Pentane |
| D. | n-Pentane > neo-Pentane > iso-Pentane |
| Answer» A. n-Pentane > iso-Pentane > neo-Pentane | |
| 3. |
To prepare a pure sample of n-hexane using sodium metal as one reactant, the other reactant will be……… |
| A. | n-propyl bromide |
| B. | Ethyl bromide and n-butyl bromide |
| C. | Ethyl chloride and n-butyl chloride |
| D. | Methyl bromide and n -pentyl chloride |
| Answer» A. n-propyl bromide | |
| 4. |
In the preparation of Grignard reagent from haloalkane, the metal |
| A. | Mg |
| B. | Zn |
| C. | Li |
| D. | K |
| Answer» A. Mg | |
| 5. |
Sodium acetate can be converted to ethane by………. |
| A. | Heating with LiAlH4 |
| B. | Electrolysing its aqueous solution |
| C. | Heating with sodalime |
| D. | Heating with calcium acetate |
| Answer» B. Electrolysing its aqueous solution | |
| 6. |
Which of the following compounds is used in antiknock compositions to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe……. |
| A. | Glycerol |
| B. | Glycol |
| C. | 1, 2-dibromoethane |
| D. | Benzene |
| Answer» C. 1, 2-dibromoethane | |
| 7. |
Which of petroleum corresponds to kerosene oil……… |
| A. | C15-C18 |
| B. | C10 – C12 |
| C. | C5 - C9 |
| D. | C1 –C9 |
| Answer» B. C10 – C12 | |
| 8. |
In the reaction CH3- Br+ 2Na+ Br-CH3 , the product called …….. |
| A. | Wurtz reaction |
| B. | Aldol condensation |
| C. | Perkin’s reaction |
| D. | Levit reaction |
| Answer» A. Wurtz reaction | |
| 9. |
Iodoethane reacts with sodium in the presence of dry ether. The product is…….. |
| A. | Pentane |
| B. | Propane |
| C. | Butene |
| D. | Butane |
| Answer» D. Butane | |
| 10. |
Which of the following is oxidised by KMnO4 |
| A. | Methane |
| B. | Pentane |
| C. | Isobutane |
| D. | Neopentane |
| Answer» C. Isobutane | |
| 11. |
The most volatile compound is………. |
| A. | 2, 2-dimethyl propane |
| B. | 2-methyl butane |
| C. | Isobutane |
| D. | n-pentane |
| Answer» A. 2, 2-dimethyl propane | |
| 12. |
In Wurtz reaction, the reagent used is……….. |
| A. | Na |
| B. | liquid NH3Na |
| C. | ether dry Na |
| D. | alcohol dry Na |
| Answer» C. ether dry Na | |
| 13. |
Which of the following has highest octane number………… |
| A. | n-hexane |
| B. | n-heptane |
| C. | n-pentane |
| D. | 2, 2, 4-trimethyl pentane |
| Answer» D. 2, 2, 4-trimethyl pentane | |
| 14. |
What is freon-12……. |
| A. | Pesticide |
| B. | Refrigerant |
| C. | Solvent |
| D. | Lubricant |
| Answer» B. Refrigerant | |
| 15. |
The petrol having octane number 80 has………… |
| A. | 20% normal heptane + 80% iso-octane |
| B. | 80% normal heptane + 20% iso-octane |
| C. | 20% normal heptane + 80% normal octane |
| D. | 80% normal heptane + 20% normal octane |
| Answer» A. 20% normal heptane + 80% iso-octane | |
| 16. |
The shape of methane molecule is……….. |
| A. | Linear |
| B. | Trigonal planar |
| C. | Square planar |
| D. | Tetrahedral |
| Answer» D. Tetrahedral | |
| 17. |
. Which of the following shows only one brominated compound………… |
| A. | Butene-2 |
| B. | 2, 2-dimethylpropane |
| C. | Butyne-1 |
| D. | Butanol-3 |
| Answer» B. 2, 2-dimethylpropane | |
| 18. |
Kerosene is used as fuel because it is…………. |
| A. | Less volatile |
| B. | More volatile |
| C. | Cheap |
| D. | Abundantly available |
| Answer» B. More volatile | |
| 19. |
Which of the following statements is not true for ethane…………. |
| A. | It can be chlorinated with chlorine |
| B. | It can be catalytically hydrogenated |
| C. | When oxidised produces CO2 and H2O |
| D. | It is a homologue of iso-butane |
| Answer» B. It can be catalytically hydrogenated | |
| 20. |
Petroleum refining is …………… |
| A. | Distillation of petroleum to get different fractions |
| B. | Obtaining aromatic compounds from aliphatic compounds present in petroleum |
| C. | Cracking of petroleum to get gaseous hydrocarbons |
| D. | Purification of petroleum |
| Answer» A. Distillation of petroleum to get different fractions | |
| 21. |
The chemical added to leaded petrol to prevent the deposition of lead in the combustion chamber is…… |
| A. | Iso-octane |
| B. | Ethylene dibromide |
| C. | Tetraethyl lead |
| D. | Mercaptan |
| Answer» B. Ethylene dibromide | |
| 22. |
In the commercial gasolines, the type of hydrocarbons which are more desirable is……….. |
| A. | Branched hydrocarbon |
| B. | Straight-chain hydrocarbon |
| C. | Linear unsaturated hydrocarbon |
| D. | Toluene |
| Answer» A. Branched hydrocarbon | |
| 23. |
Which of the following is not formed by the reaction of Cl2 on CH4 in sunlight………. |
| A. | CHCl3 |
| B. | CH3Cl |
| C. | CH3CH3 |
| D. | CH3CH2CH3 |
| Answer» D. CH3CH2CH3 | |
| 24. |
Which of the following has the highest boiling point……….. |
| A. | Neopentane |
| B. | n-butane |
| C. | n-heptane |
| D. | Isobutane |
| Answer» C. n-heptane | |
| 25. |
Which gives CH4 when treated with water…….. |
| A. | Silicon carbide |
| B. | Calcium carbide |
| C. | Aluminium carbide |
| D. | Iron carbide |
| Answer» C. Aluminium carbide | |
| 26. |
Which of the following does not react with PCl5 |
| A. | CH3OH |
| B. | CH3COOH |
| C. | CH3CHO |
| D. | C2H6 |
| Answer» D. C2H6 | |
| 27. |
Which of the following compounds is insoluble even in hot concentrated H2SO4……… |
| A. | Ethylene |
| B. | Benzene |
| C. | Hexane |
| D. | Aniline |
| Answer» C. Hexane | |
| 28. |
A reaction between methyl magnesium bromide and ethyl alcohol gives………. |
| A. | Methane |
| B. | Ethane |
| C. | Propane |
| D. | Butane |
| Answer» A. Methane | |
| 29. |
Methane and ethane both can be obtained in single step from ………… |
| A. | CH3 I |
| B. | C2H5I |
| C. | CH3OH |
| D. | C2H5OH |
| Answer» A. CH3 I | |
| 30. |
Paraffin wax is……….. |
| A. | Ester |
| B. | Alcohol |
| C. | Unsaturated hydrocarbon |
| D. | Saturated Hydrocrabon |
| Answer» D. Saturated Hydrocrabon | |
| 31. |
The number of possible enantiomeric pairs that can be produced during monochlorination of 2- methylbutane is …….. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 1 |
| Answer» A. 2 | |
| 32. |
Petroleum consists mainly of………… |
| A. | Aliphatic hydrocarbons |
| B. | Aromatic hydrocarbons |
| C. | Aliphatic alcohols |
| D. | None of these |
| Answer» A. Aliphatic hydrocarbons | |
| 33. |
Petroleum ether can be used as………. |
| A. | Solvent for fat, oil, varnish and rubber |
| B. | As a fuel |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» A. Solvent for fat, oil, varnish and rubber | |
| 34. |
Which of the following are produced from coaltar……….. |
| A. | Synthetic dyes |
| B. | Drugs |
| C. | Perfumes |
| D. | All the three |
| Answer» D. All the three | |
| 35. |
In alkanes, the bond angle is…….. |
| A. | 109.5 o |
| B. | 109 o |
| C. | 120 o |
| D. | 180 o |
| Answer» A. 109.5 o | |
| 36. |
In the preparation of alkanes; a concentrated aqueous solution of sodium or potassium salts of saturated carboxylic acid are subjected to……… |
| A. | Hydrolysis |
| B. | Oxidation |
| C. | Hydrogenation |
| D. | Electrolysis |
| Answer» D. Electrolysis | |
| 37. |
Halogenation of alkanes is an example of……….. |
| A. | Electrophilic substitution |
| B. | Nucleophilic substitution |
| C. | Free-radical substitution |
| D. | Oxidation |
| Answer» C. Free-radical substitution | |
| 38. |
Propionic acid is subjected to reduction with hydroiodic acid in the presence of a little P, the product formed is………… |
| A. | Ethane |
| B. | Propane |
| C. | Butane |
| D. | None of these |
| Answer» B. Propane | |
| 39. |
When ethyl iodide and propyl iodide react with Na in the presence of ether, they form……… |
| A. | One alkane |
| B. | Two alkanes |
| C. | Four alkanes |
| D. | Three alkanes |
| Answer» D. Three alkanes | |
| 40. |
The alkane that yields two isomeric monobromo derivatives is…………… |
| A. | Neopentane |
| B. | Ethane |
| C. | Methane |
| D. | Propane |
| Answer» D. Propane | |
| 41. |
Kerosene is a mixture of…………. |
| A. | Alkanes |
| B. | Aromatic compounds |
| C. | Alcohols |
| D. | Aliphatic acids |
| Answer» B. Aromatic compounds | |
| 42. |
When petroleum is heated the vapours contain mainly…………. |
| A. | Kerosene |
| B. | Petroleum ether |
| C. | Diesel |
| D. | Machine oil |
| Answer» D. Machine oil | |
| 43. |
Iso-octane is mixed to the petrol…………. |
| A. | To precipitate inorganic substances |
| B. | To prevent freezing of petrol |
| C. | To increase boiling point of petrol |
| D. | As an antiknock |
| Answer» D. As an antiknock | |
| 44. |
Cyclohexane, a hydrocarbon floats on water because………… |
| A. | It is immiscible with water |
| B. | Its density is low as compared to water |
| C. | It is non-polar substance |
| D. | It is immiscible and lighter than water |
| Answer» A. It is immiscible with water | |
| 45. |
Natural gas contains mainly…………. |
| A. | Methane |
| B. | n-butane |
| C. | n-octane |
| D. | Mixture of octane |
| Answer» D. Mixture of octane | |
| 46. |
Which compound is not inflammable……….. |
| A. | CCl4 |
| B. | C2H5OH |
| C. | CH4 |
| D. | C6H6 |
| Answer» A. CCl4 | |
| 47. |
Propane is obtained from propene, by which of the following methods………. |
| A. | Wurtz reaction |
| B. | Dehydrogenation |
| C. | Frankland reaction |
| D. | Catalytic hydrogenation |
| Answer» A. Wurtz reaction | |
| 48. |
LPG is a mixture of…………. |
| A. | C6H12+ C6H6 |
| B. | C4H10+ C3H8 |
| C. | C2H4 + C2H2 |
| D. | C2H4 + CH4 |
| Answer» B. C4H10+ C3H8 | |
| 49. |
Carbon black, which is used in making printer's ink, is obtained by decomposition of…………. |
| A. | Acetylene |
| B. | Benzene |
| C. | Carbon tetrachloride |
| D. | Methane |
| Answer» D. Methane | |
| 50. |
The addition of tetraethyl lead to petrol………… |
| A. | Lowers its octane number |
| B. | Raises its octane number |
| C. | May raise or lower the octane number |
| D. | Has no effect on octane number |
| Answer» B. Raises its octane number | |
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