MCQOPTIONS
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MCQOPTIONS
This section includes 55 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Chlorination of alkanes is an example of __________ |
| A. | Radical |
| B. | Elimination |
| C. | Free radical |
| D. | Addition |
| Answer» D. Addition | |
| 2. |
Liquid hydrocarbon is converted into gaseous hydrocarbon by __________ |
| A. | Oxidation |
| B. | Hydrolysis |
| C. | Cracking |
| D. | Distillation |
| Answer» D. Distillation | |
| 3. |
The hydrocarbon in which all the 4 valencies of carbon are fully occupied is called as __________ |
| A. | Alkene |
| B. | Alkyne |
| C. | Alkane |
| D. | Cycloalkane |
| Answer» D. Cycloalkane | |
| 4. |
Name the process associated with acylation of benzene. |
| A. | Friedel craft reaction |
| B. | Wurtz reaction |
| C. | Wurtz fitting reaction |
| D. | Debey Huckel reaction |
| Answer» B. Wurtz reaction | |
| 5. |
Calcium carbide on reaction with water gives? |
| A. | Methane |
| B. | Ethane |
| C. | propane |
| D. | Acetylene |
| Answer» E. | |
| 6. |
“Methane is a product of aerobic respiration”. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 7. |
Ethane is obtained by electrolyzing __________ |
| A. | Potassium formate |
| B. | Potassium succinate |
| C. | Potassium acetate |
| D. | Potassium fumarate |
| Answer» C. Potassium acetate | |
| 8. |
The simplest member of organic compounds is? |
| A. | Methanol |
| B. | Methane |
| C. | Formaldehyde |
| D. | Formic acid |
| Answer» C. Formaldehyde | |
| 9. |
Hydrocarbons are organic compounds with element __________ |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Carbon |
| D. | Both hydrogen and carbon |
| Answer» E. | |
| 10. |
Generally alkanes are said to have been |
| A. | reactive |
| B. | unreactive |
| C. | highly reactive |
| D. | stable |
| Answer» C. highly reactive | |
| 11. |
Hydrocarbons containing double bonds are called |
| A. | Alkanes |
| B. | alkenes |
| C. | arenes |
| D. | ketone |
| Answer» C. arenes | |
| 12. |
Layers of rock under surface of earth is present in |
| A. | water |
| B. | calcium |
| C. | crude oil |
| D. | gold |
| Answer» D. gold | |
| 13. |
Lower molar mass of hydrocarbons have increased |
| A. | polarity |
| B. | volatility |
| C. | both A and B |
| D. | boiling point |
| Answer» C. both A and B | |
| 14. |
Alkenes mostly follow reaction of |
| A. | addition reaction |
| B. | elimination reaction |
| C. | substitution reaction |
| D. | all of them |
| Answer» B. elimination reaction | |
| 15. |
If ethene is reactant, then product will be |
| A. | ethanol |
| B. | triol |
| C. | butanol |
| D. | propanol |
| Answer» B. triol | |
| 16. |
Alcoholic drinks are manufactured by fermentation of |
| A. | sugar cane |
| B. | glucose |
| C. | ethene |
| D. | all of them |
| Answer» C. ethene | |
| 17. |
Maximum number of hydrogen atoms are present in molecules of alkanes hence they are |
| A. | saturated hydrocarbons |
| B. | unsaturated hydrocarbons |
| C. | super saturated hydrocarbons |
| D. | super unsaturated hydrocarbon |
| Answer» B. unsaturated hydrocarbons | |
| 18. |
Cars releases unburnt hydrocarbons, carbon monoxide, acidic nitrogen oxides and |
| A. | carcinogens |
| B. | bacteria |
| C. | noise |
| D. | pathogens |
| Answer» B. bacteria | |
| 19. |
Under certain conditions ethene molecule reacts to give |
| A. | isomer |
| B. | polymer |
| C. | isotope |
| D. | monomer |
| Answer» C. isotope | |
| 20. |
An estimated amount of 10,000 ethene monomers bond together to make polymer chain of |
| A. | poly(ethene) |
| B. | PVC |
| C. | polymers |
| D. | monomers |
| Answer» B. PVC | |
| 21. |
Carbon dioxide is |
| A. | toxic |
| B. | pollutant |
| C. | enhance global warming |
| D. | both B and C |
| Answer» E. | |
| 22. |
Hydrocarbons which contain ring of three or more carbon atoms are called |
| A. | alkanes |
| B. | cycloalkanes |
| C. | aromatic compounds |
| D. | all of them |
| Answer» C. aromatic compounds | |
| 23. |
Non-polar alkanes do not react with |
| A. | polar compounds |
| B. | water |
| C. | base |
| D. | both A and B |
| Answer» E. | |
| 24. |
If alkane is supplied with plenty of oxygen it will undergo |
| A. | complete combustion |
| B. | substitution |
| C. | addition |
| D. | hydrolysis |
| Answer» B. substitution | |
| 25. |
A toxic gas which binds with human hemoglobin and inhibit oxygen binding to blood is |
| A. | oxygen |
| B. | carbon dioxide |
| C. | carbon monoxide |
| D. | nitrogen |
| Answer» D. nitrogen | |
| 26. |
Major portion of mixture of hydrocarbons like crude oil is composed of |
| A. | ester |
| B. | alcohol |
| C. | alkanes |
| D. | propane |
| Answer» D. propane | |
| 27. |
Double bond in ethene is formed from |
| A. | a sigma-bond |
| B. | a pi-bond |
| C. | lone pairs |
| D. | both A and B |
| Answer» E. | |
| 28. |
After bubbling through concentrated solution of any hydrogen halide, product obtained is |
| A. | halogen |
| B. | alkane |
| C. | halogen alkane |
| D. | halogen alkene |
| Answer» E. | |
| 29. |
If hydrogen and alkene are passed over finely divided nickel, it gives off |
| A. | alcohol |
| B. | alkanes |
| C. | aldehydes |
| D. | ketone |
| Answer» C. aldehydes | |
| 30. |
Useful alkenes for chemical industries is supplied by |
| A. | oil refineries |
| B. | coal mines |
| C. | oil wells |
| D. | flour mill |
| Answer» B. coal mines | |
| 31. |
Compounds of alkanes which are in high demands are |
| A. | gasoline fraction |
| B. | naphtha fraction |
| C. | both A and B |
| D. | gasohol |
| Answer» D. gasohol | |
| 32. |
Alcohols are produced by passing alkenes through |
| A. | steam |
| B. | acid |
| C. | base |
| D. | alkali |
| Answer» B. acid | |
| 33. |
Mixture of hexane and water is |
| A. | unreactive |
| B. | immiscible |
| C. | miscible |
| D. | both A and B |
| Answer» E. | |
| 34. |
Hydrocarbons contain |
| A. | carbon |
| B. | hydrogen |
| C. | both A and B |
| D. | oxygen |
| Answer» D. oxygen | |
| 35. |
Alkenes can be oxidized by help of powerful oxidizing agent, acidified |
| A. | potassium mangnate |
| B. | sodium mangnate |
| C. | calcium mangnate |
| D. | all of them |
| Answer» B. sodium mangnate | |
| 36. |
In combustion reactions alkanes react with |
| A. | oxygen |
| B. | nitrogen |
| C. | water |
| D. | all of them |
| Answer» B. nitrogen | |
| 37. |
A long chain made up of small repeating units is a |
| A. | polymer |
| B. | isomer |
| C. | isotope |
| D. | allotrope |
| Answer» B. isomer | |
| 38. |
Disposal of poly(ethene) bag is extremely difficult and it can cause pollution for coming |
| A. | years |
| B. | days |
| C. | months |
| D. | centuries |
| Answer» E. | |
| 39. |
Breaking of large less useful hydrocarbons into smaller less useful hydrocarbons is known as |
| A. | decomposition |
| B. | addition |
| C. | cracking |
| D. | breaking |
| Answer» D. breaking | |
| 40. |
Crude oil is a complex mixture of |
| A. | alkanes |
| B. | cycloalkanes |
| C. | aromatic compounds |
| D. | all of them |
| Answer» E. | |
| 41. |
Hydrocarbons are main source of |
| A. | petrol |
| B. | diesel |
| C. | kerosene |
| D. | all of them |
| Answer» E. | |
| 42. |
Wide range of different hydrocarbons are separated into fractions |
| A. | fractional decomposition |
| B. | fractional distillation |
| C. | fractional substitution |
| D. | fractional polarization |
| Answer» B. fractional distillation | |
| 43. |
Alkane molecules are not attacked by electrophiles or neutrophils because they are |
| A. | polar |
| B. | non-polar |
| C. | volatile |
| D. | unstable |
| Answer» C. volatile | |
| 44. |
Due to presence of double bonds, alkenes are |
| A. | unsaturated |
| B. | saturated |
| C. | polar |
| D. | non-polar |
| Answer» B. saturated | |
| 45. |
Carbon monoxide is a gas which is |
| A. | colorless |
| B. | odorless |
| C. | tasteless |
| D. | all of them |
| Answer» E. | |
| 46. |
Chlorination of alkanes is an example of |
| A. | Radical |
| B. | Elimination |
| C. | Free radical |
| D. | Addition |
| Answer» D. Addition | |
| 47. |
Liquid hydrocarbon is converted into gaseous hydrocarbon by: |
| A. | Oxidation |
| B. | Hydrolysis |
| C. | Cracking |
| D. | Distillation |
| Answer» D. Distillation | |
| 48. |
The hydrocarbon in which all the 4 valencies of carbon are fully occupied is called as |
| A. | Alkene |
| B. | Alkyne |
| C. | Alkane |
| D. | Cycloalkane |
| Answer» D. Cycloalkane | |
| 49. |
Name the process associated with acylation of benzene |
| A. | Friedel craft reaction |
| B. | Wurtz reaction |
| C. | Wurtz fitting reaction |
| D. | Debey Huckel reaction |
| Answer» B. Wurtz reaction | |
| 50. |
Calcium carbide on reaction with water gives? |
| A. | Methane |
| B. | Ethane |
| C. | propane |
| D. | Acetylene |
| Answer» E. | |