MCQOPTIONS
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MCQOPTIONS
This section includes 30 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. |
Which one of the following is termed as benzul alcohol? |
| A. | C6H5OH |
| B. | C6H5CH(OH)2 |
| C. | C6H5CH2OH |
| D. | C6H5COOH |
| Answer» D. C6H5COOH | |
| 2. |
Which one of the following is also known as lactic acid? |
| A. | 3-Hydroxy propanoic acid |
| B. | 2-Hydroxy propanoic acid |
| C. | 2-hydroxy butanoic acid |
| D. | 3-hydroxy butanoic acid |
| Answer» C. 2-hydroxy butanoic acid | |
| 3. |
Which one of the following is also known as tartaric acid? |
| A. | 2 3-dihydroxy butance 1 4 -dioic acid |
| B. | 2 3 -dihydroxy butanedioic acid |
| C. | 2 3 -dihydroxy butanioc acid |
| D. | 2 2 -dihydroxy butanoic acid |
| Answer» B. 2 3 -dihydroxy butanedioic acid | |
| 4. |
Water gas heated at 450?C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce |
| A. | Methanal |
| B. | Methanol |
| C. | Carbonic acid |
| D. | Methane |
| Answer» C. Carbonic acid | |
| 5. |
The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called |
| A. | Mother liquor |
| B. | Filterate |
| C. | Extract |
| D. | Molasses |
| Answer» E. | |
| 6. |
The formula of starch is |
| A. | C12H22O11 |
| B. | C6H10O5 |
| C. | (C6H10O5)n |
| D. | C6H12O6 |
| Answer» D. C6H12O6 | |
| 7. |
The rectified spirit contains |
| A. | 12% alcohol |
| B. | 90% alcohol |
| C. | 95% alcohol |
| D. | 100% alcohol |
| Answer» D. 100% alcohol | |
| 8. |
The process of fermentation of starch involve many enzymes the sequence of enzymes used are |
| A. | Diastase-maltase-zymase |
| B. | Zymase-maltase-diastase |
| C. | Maltase-diastase-zymase |
| D. | Diastase-zymase-maltase |
| Answer» B. Zymase-maltase-diastase | |
| 9. |
K2Cr2O7/H2SO4 generate |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Nascent oxygen[O] |
| D. | Nascent hydrogen[H] |
| Answer» D. Nascent hydrogen[H] | |
| 10. |
The oxidation of isopropyl alcohol will yield |
| A. | Propane |
| B. | Propanol |
| C. | Propanone |
| D. | Propanoic acid |
| Answer» D. Propanoic acid | |
| 11. |
Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate? |
| A. | Primary alcohol |
| B. | Secondary alcohol |
| C. | Tertiary alcohol |
| D. | All of above |
| Answer» D. All of above | |
| 12. |
The distinction test for primary secondary and tertiary alcohol required to react each of them is |
| A. | Cone. HCI and anhydrous SOCl2 |
| B. | Cone. HCI and anhydrous CaCl2 |
| C. | Cone. HCI and anhydrous PCl2 |
| D. | Cone. HCI and anhydrous ZnCl2 |
| Answer» E. | |
| 13. |
Which compound is also known by the name of carbolic acid? |
| A. | C2H2OH |
| B. | H2CO3 |
| C. | C6H5OH |
| D. | H3PO3 |
| Answer» D. H3PO3 | |
| 14. |
The given dissociation constant (Ka) value 1.3 10-10 is of |
| A. | Alcohol |
| B. | Acetic acid |
| C. | Water |
| D. | Phenol |
| Answer» E. | |
| 15. |
Heating phenol with Zn will yield |
| A. | Benzene |
| B. | Benzoic acid |
| C. | Phenoxide |
| D. | Cyclohexane |
| Answer» B. Benzoic acid | |
| 16. |
When phenol is heated with concentrated nitric acid the product is |
| A. | Picric acid |
| B. | O-nitrophenol |
| C. | 1 3 5 -trinitro benzene |
| D. | P-nitrophenol |
| Answer» B. O-nitrophenol | |
| 17. |
Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is |
| A. | Oxidation |
| B. | Elimination |
| C. | Condensation polymerization |
| D. | Additional polymertization |
| Answer» D. Additional polymertization | |
| 18. |
Which compound shows hydrogen bonding? |
| A. | C2H6 |
| B. | C2H5Cl |
| C. | CH3OCH3 |
| D. | C2H5OH |
| Answer» E. | |
| 19. |
Ethanol can be converted into ethanoic acid by |
| A. | Hydrogenation |
| B. | Hydration |
| C. | Oxidation |
| D. | Fermentation |
| Answer» D. Fermentation | |
| 20. |
Methyl alcohol is not used |
| A. | As a solvent |
| B. | As an antifreezing agent |
| C. | As a substitute for petrol |
| D. | For denaturing of ethyl alcohol |
| Answer» D. For denaturing of ethyl alcohol | |
| 21. |
Methanol can be obtained from |
| A. | Water gas |
| B. | Destructive distillation of wood |
| C. | Methane |
| D. | All |
| Answer» E. | |
| 22. |
An alcohol which can be prepared by fermentation is |
| A. | CH3OH |
| B. | C3H7OH |
| C. | CH3 - CH2 - OH |
| D. | C6H5OH |
| Answer» D. C6H5OH | |
| 23. |
Absolute alcohol is obtained when rectified spirit is treated with |
| A. | Ca(OH)2 |
| B. | CaCO3 |
| C. | CaCl2 |
| D. | CaO |
| Answer» E. | |
| 24. |
When alcohol reacts with phosphorous halides it geive |
| A. | Alkyl halides |
| B. | Alkyl amine |
| C. | Alkanes |
| D. | Alkynes |
| Answer» B. Alkyl amine | |
| 25. |
Which one of the following compound does not have OH group |
| A. | Ethylene glycol |
| B. | Glycerol |
| C. | Picric acid |
| D. | Ethyl acetate |
| Answer» E. | |
| 26. |
Phenol was isolated by Runge from |
| A. | Vegetable oil |
| B. | Coaltar |
| C. | Wood |
| D. | None of these |
| Answer» C. Wood | |
| 27. |
The hydrogenation of phenol in the presence of Ni and heat gives |
| A. | Cyclohexane |
| B. | N - hexane |
| C. | 1 - hexanol |
| D. | Cyclohexanol |
| Answer» E. | |
| 28. |
Ethanol and methanol can be distinguished by a |
| A. | Iodoform test |
| B. | Lucas test |
| C. | Benedicts test |
| D. | Tollens test |
| Answer» B. Lucas test | |
| 29. |
Ethers show functional group isomerism with |
| A. | Aldehydes |
| B. | Ketones |
| C. | Alcohols |
| D. | Carboxylic acid |
| Answer» D. Carboxylic acid | |
| 30. |
Which one of the following alcohol has greater boiling point |
| A. | Ethanol |
| B. | Ethylene glaycol |
| C. | Glycerol |
| D. | Methanol |
| Answer» D. Methanol | |