By babulal1988.com@gmail.com / 02/10/2025 0% 0 votes, 0 avg 16 Complete chemistry Chemistry Quiz Present time is the best time to initiate the tast 1 / 41 Category: chemistry 1. Which reagent is used to distinguish between phenol and ethanol? a. HCl b. NaOH c. FeCl₃ d. Na metal 2 / 41 Category: chemistry 2. Phenol on heating with zinc dust forms: (AIPMT 2013) a. Benzoic acid b. Benzene c. Cyclohexanol d. Chlorobenzene 3 / 41 Category: chemistry 3. Aldehydes can be prepared by oxidation of: a. Secondary alcohols b. Tertiary alcohols c. Primary alcohols d. Phenols 4 / 41 Category: chemistry 4. Anisole on nitration gives mainly: a. Nitrobenzene b. m-Nitroanisole c. o-Nitroanisole d. p-Nitroanisole 5 / 41 Category: chemistry 5. Tollens’ reagent is used to distinguish between: a. Alcohol and aldehyde b. Ketone and acid c. Aldehyde and ester d. Aldehyde and ketone 6 / 41 Category: chemistry 6. Which alcohol gives turbidity immediately with Lucas reagent? a. Ethanol b. tert-Butyl alcohol c. 2-Propanol d. 1-Propanol 7 / 41 Category: chemistry 7. Ethers are generally unreactive because: a. Oxygen has lone pairs b. They lack acidic hydrogen c. They have strong C–O bonds d. They are non-polar 8 / 41 Category: chemistry 8. Which one is an ether? (NEET 2012) a. CH₃CH₂OH b. C₆H₅OH c. CH₃COOH d. CH₃OCH₃ 9 / 41 Category: chemistry 9. The boiling point of aldehydes and ketones is higher than hydrocarbons because of: a. Ionic bonding b. Hydrogen bonding c. Dipole–dipole interaction d. Van der Waals forces 10 / 41 Category: chemistry 10. Cannizzaro reaction is shown by aldehydes which: a. Have α-hydrogen b. Are aliphatic c. Do not have α-hydrogen d. Are aromatic 11 / 41 Category: chemistry 11. The major product formed when phenol reacts with bromine water is: a. p-Bromophenol b. 2,4,6-Tribromophenol c. Bromobenzene d. o-Bromophenol 12 / 41 Category: chemistry 12. L mol–1 s–1 is unit of rate constant for second order reaction. a. False b. True 13 / 41 Category: chemistry 13. Williamson ether synthesis involves reaction between: (NEET 2016) a. Ether and alkyl halide b. Phenol and alkyl halide c. Alcohol and alkyl halide d. Sodium alkoxide and alkyl halide 14 / 41 Category: chemistry 14. 10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount HCl solution (the same solution as before) required to neutralise it will be a. 8 mL b. 4 mL c. 16 mL d. 12 mL 15 / 41 Category: chemistry 15. Which of the following will NOT give ether on dehydration? a. Methanol b. Ethanol c. tert-Butyl alcohol d. Propanol 16 / 41 Category: chemistry 16. F. Wohler synthesised an organic compound, urea from an inorganic compound. That is ....... a. None of the above b. Uric acid c. Ammonia d. Urea 17 / 41 Category: chemistry 17. Which of the following does NOT give silver mirror test? a. Formaldehyde b. Ethanal c. Acetone d. Benzaldehyde 18 / 41 Category: chemistry 18. The increasing order of acidity is: a. Water < Ethanol < Phenol b. Phenol < Water < Ethanol c. Ethanol < Water < Phenol d. Ethanol < Phenol < Water 19 / 41 Category: chemistry 19. In Williamson ether synthesis, which alkyl halide is least suitable? a. Ethyl bromide b. Isopropyl bromide c. tert-Butyl bromide d. Methyl bromide 20 / 41 Category: chemistry 20. The functional group present in aldehydes is: a. –CHO b. –COOH c. –OH d. –CO– 21 / 41 Category: chemistry 21. Which of the following alcohols shows maximum intermolecular hydrogen bonding? a. Propan-2-ol b. Glycerol c. Methanol d. Ethanol 22 / 41 Category: chemistry 22. Which compound gives a positive Fehling’s test? a. Acetophenone b. Acetone c. Formaldehyde d. Benzaldehyde 23 / 41 Category: chemistry 23. Anisole undergoes bromination in the presence of FeBr₃ to give mainly: a. m-Bromoanisole b. o-Bromoanisole c. Bromobenzene d. p-Bromoanisole 24 / 41 Category: chemistry 24. The mixture Which forms Azeotropic with highest boiling point will be : a. Ethanol + Water b. Heptane + Octane c. Water + Nitric acid d. Acetone + Carbon disulphide 25 / 41 Category: chemistry 25. Which of the following depends on temperature : a. Molality b. Mole Fraction c. Weight percentage d. Molarity 26 / 41 Category: chemistry 26. Which of the following does not react with sodium metal?(NEET 2017) a. Phenol b. Diethyl ether c. Ethanol d. Water 27 / 41 Category: chemistry 27. Which one of the following is the strongest acid? (NEET 2019) a. Ethanol b. Phenol c. Water d. p-Nitrophenol 28 / 41 Category: chemistry 28. Which ether on reaction with excess HI gives two different alkyl iodides? a. Diphenyl ether b. Diethyl ether c. Dimethyl ether d. Methyl ethyl ether 29 / 41 Category: chemistry 29. Aldehydes are more reactive than ketones in nucleophilic addition reactions because: a. Aldehydes are less polar b. Ketones have H atom c. Steric hindrance is less d. Ketones have lower boiling point 30 / 41 Category: chemistry 30. s–1 is the unit of rate constant for the zero order reaction. a. True b. False 31 / 41 Category: chemistry 31. What is the type of hybridisation of each carbon in the following compound? CH3CH=CHCN a. sp3, sp, b. sp3, sp2 c. sp3, sp2, sp2, sp d. sp3 32 / 41 Category: chemistry 32. Which of the following is a ketone? a. Ethanal b. Propanone c. Benzaldehyde d. Methanal 33 / 41 Category: chemistry 33. Phenol is more acidic than ethanol because: a. Phenol forms hydrogen bonds b. Ethoxide ion is stabilized by resonance c. Phenoxide ion is stabilized by resonance d. Phenol has higher molecular mass 34 / 41 Category: chemistry 34. Williamson ether synthesis is useful for preparing: a. Both symmetrical and unsymmetrical ethers b. Unsymmetrical ethers only c. Cyclic ethers only d. Symmetrical ethers only 35 / 41 Category: chemistry 35. Which reagent converts aldehydes into corresponding alcohols? a. KMnO₄ b. Fehling’s solution c. NaBH₄ d. Tollens’ reagent 36 / 41 Category: chemistry 36. 1.00 mol kg–1 (or 1.00 m) solution of KCl means that 1 mol (74.5 g) of KCl is dissolved in 1 kg of water. a. False b. True 37 / 41 Category: chemistry 37. For the given reaction 2A + B → C + D, the rate constant is 1.5 × 10–4 s –1. What is the order of the reaction? a. two b. zero c. three d. one 38 / 41 Category: chemistry 38. If the molarity of dilute solution is doubled, then the molal depression constant will be : a. double b. triple c. half d. unchanged 39 / 41 Category: chemistry 39. Which compound is used in the preparation of bakelite? a. Formaldehyde b. Acetone c. Acetophenone d. Benzaldehyde 40 / 41 Category: chemistry 40. Major product when phenol reacts with chloroform and NaOH followed by acidification is: a. Benzoic acid b. Chlorobenzene c. Benzaldehyde d. Salicylaldehyde 41 / 41 Category: chemistry 41. The molarity of a solution containing 5 g of NaOH in 450 mL solution is 0.278 mol dm–3. a. True b. 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