MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Alkanes containing a methyl group on main chain at 2nd carbon are called |
| A. | Iso-alkane |
| B. | Normal-alkane |
| C. | Neo-alkane |
| D. | Branched-alkane |
| Answer» B. Normal-alkane | |
| 2. |
When one hydrogen atom of alkane is removed then it is called |
| A. | Alkene |
| B. | Alkyl |
| C. | Aldehyde |
| D. | Saturated hydrocarbon |
| Answer» C. Aldehyde | |
| 3. |
Alkanes are also known as |
| A. | Saturated hydrocarbon |
| B. | Unsaturated hydrocarbon |
| C. | Paraffins |
| D. | Both a & c |
| Answer» D. Both a & c | |
| 4. |
Sabatier Senderns reaction involve _________ in presence of Ni |
| A. | Aalkene & H2 |
| B. | Alkene & O2 |
| C. | Alkene & N2 |
| D. | Alkyne & Cl2 |
| Answer» B. Alkene & O2 | |
| 5. |
Hydrogenolysis results in the formation of |
| A. | Alkane |
| B. | Alkene |
| C. | Alkyne |
| D. | Aldehydes |
| Answer» B. Alkene | |
| 6. |
Clemmensens reduction infolves the reduction of |
| A. | Ketone |
| B. | Aldehyde |
| C. | Alkane |
| D. | All of the above |
| Answer» B. Aldehyde | |
| 7. |
Order of ease of halogenation in alkane is |
| A. | I2>Cl2>Br2>F2 |
| B. | F2>Cl2>I2>Br2 |
| C. | F2>Cl2>Br2>I2 |
| D. | Cl2>F2>Br2>I2 |
| Answer» D. Cl2>F2>Br2>I2 | |
| 8. |
The gas used in manufacturing of urea fertilizer |
| A. | C2H6 |
| B. | C2H4 |
| C. | C2H2 |
| D. | CH4 |
| Answer» E. | |
| 9. |
Which of the following will be acidic |
| A. | Propyne |
| B. | 1-butyne |
| C. | Ethyne |
| D. | All of the above |
| Answer» E. | |
| 10. |
Removal of halogen and hydrogen atom is |
| A. | Halogenation |
| B. | Dehalogenation |
| C. | Dehydrohalogenation |
| D. | Hydrohalogenation |
| Answer» D. Hydrohalogenation | |
| 11. |
Alkenes are produced from dehalogenation of |
| A. | Dihalo alkane |
| B. | Trihalo alkane |
| C. | Vicinal dihalo alkane |
| D. | Vicinal trihalo alkane |
| Answer» D. Vicinal trihalo alkane | |
| 12. |
Reactivity due to pi-electrons is present in |
| A. | Alkane |
| B. | Alkene |
| C. | Alkyne |
| D. | Both b & c |
| Answer» E. | |
| 13. |
In unsaturated hydro carbons ?-electrons favour |
| A. | Less reactivity |
| B. | Addition reactions |
| C. | Substitution reactions |
| D. | None |
| Answer» C. Substitution reactions | |
| 14. |
Raney nickel is prepared from __________ by treating with caustic soda |
| A. | Ni-Cu alloy |
| B. | Ni-Fe alloy |
| C. | Ni-Al alloy |
| D. | Ni-Mg alloy |
| Answer» D. Ni-Mg alloy | |
| 15. |
Which one is Chloroform |
| A. | CH2Cl2 |
| B. | CH3Cl |
| C. | CHCl3 |
| D. | CCl4 |
| Answer» D. CCl4 | |
| 16. |
Vinylacetylene combines with HCI to form |
| A. | Polyacetylene |
| B. | Benzene |
| C. | Chloroprene |
| D. | Divinyl acetylene |
| Answer» D. Divinyl acetylene | |
| 17. |
? ? -dichloroethyl sulphide is commonly known as |
| A. | Laughing gas |
| B. | Bio-gas |
| C. | Mustard gas |
| D. | Phosgene gas |
| Answer» D. Phosgene gas | |
| 18. |
Which is used for artificial ripening of fruit? |
| A. | Ethane |
| B. | Ethene |
| C. | Ethyne |
| D. | Methane |
| Answer» C. Ethyne | |
| 19. |
Which is methyl cyanide |
| A. | CH3NH2 |
| B. | CH3NO2 |
| C. | CH3CN |
| D. | CH2 = CH - CN |
| Answer» D. CH2 = CH - CN | |
| 20. |
Preparation of vegetable ghee involves |
| A. | Halogenation |
| B. | Hydroxylation |
| C. | Hydrogenation |
| D. | Hydration |
| Answer» D. Hydration | |
| 21. |
Removal of CO2 is called |
| A. | Carboxylation |
| B. | Decarboxylation |
| C. | Esterification |
| D. | Hydroxylation |
| Answer» C. Esterification | |
| 22. |
Soda lime is a mixture of |
| A. | CaO and KOH |
| B. | CaO and NaOH |
| C. | NaOH and Na2O |
| D. | Na2O and KOH |
| Answer» C. NaOH and Na2O | |
| 23. |
Molozonide is unstable and changes into ozonide on |
| A. | Reduction |
| B. | Oxidation |
| C. | Hydrolysis |
| D. | Rearrangement |
| Answer» E. | |
| 24. |
Dehalogenation of ethyl tetrahalide will give |
| A. | Ethene |
| B. | Ethyne |
| C. | Ethyl halide |
| D. | All of the above are possible |
| Answer» C. Ethyl halide | |
| 25. |
R-Mg-Br is called |
| A. | Grignard reagent |
| B. | Metallic alkyl halide |
| C. | Both a & b |
| D. | Alkyl |
| Answer» D. Alkyl | |
| 26. |
Upto ______ C atoms alkanes are gases |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 27. |
Which of the following is the most reactive |
| A. | Ethane |
| B. | Ethyne |
| C. | Ethene |
| D. | Benzene |
| Answer» D. Benzene | |
| 28. |
Incomplete oxidation of methane in the limited supply of air forms. |
| A. | CO2 and H2O |
| B. | CH3OH |
| C. | CO + H2 + C |
| D. | CO + H2O + C |
| Answer» C. CO + H2 + C | |
| 29. |
Introduction of nitro group in a molecule is called |
| A. | Nitration |
| B. | Halogenation |
| C. | Sulphonation |
| D. | Amination |
| Answer» B. Halogenation | |