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. s–1 is the unit of rate constant for the zero order reaction. a. True b. False 2 / 41 Category: chemistry 2. Williamson ether synthesis involves reaction between: (NEET 2016) a. Phenol and alkyl halide b. Alcohol and alkyl halide c. Sodium alkoxide and alkyl halide d. Ether and alkyl halide 3 / 41 Category: chemistry 3. Aldehydes are more reactive than ketones in nucleophilic addition reactions because: a. Ketones have lower boiling point b. Steric hindrance is less c. Aldehydes are less polar d. Ketones have H atom 4 / 41 Category: chemistry 4. Ethers are generally unreactive because: a. They lack acidic hydrogen b. They have strong C–O bonds c. They are non-polar d. Oxygen has lone pairs 5 / 41 Category: chemistry 5. Williamson ether synthesis is useful for preparing: a. Cyclic ethers only b. Both symmetrical and unsymmetrical ethers c. Unsymmetrical ethers only d. Symmetrical ethers only 6 / 41 Category: chemistry 6. Which reagent is used to distinguish between phenol and ethanol? a. HCl b. FeCl₃ c. Na metal d. NaOH 7 / 41 Category: chemistry 7. The increasing order of acidity is: a. Water < Ethanol < Phenol b. Phenol < Water < Ethanol c. Ethanol < Phenol < Water d. Ethanol < Water < Phenol 8 / 41 Category: chemistry 8. Which of the following does not react with sodium metal?(NEET 2017) a. Diethyl ether b. Water c. Ethanol d. Phenol 9 / 41 Category: chemistry 9. Which of the following will NOT give ether on dehydration? a. Propanol b. Methanol c. tert-Butyl alcohol d. Ethanol 10 / 41 Category: chemistry 10. Anisole undergoes bromination in the presence of FeBr₃ to give mainly: a. m-Bromoanisole b. p-Bromoanisole c. Bromobenzene d. o-Bromoanisole 11 / 41 Category: chemistry 11. Phenol on heating with zinc dust forms: (AIPMT 2013) a. Benzene b. Benzoic acid c. Chlorobenzene d. Cyclohexanol 12 / 41 Category: chemistry 12. Which alcohol gives turbidity immediately with Lucas reagent? a. 1-Propanol b. 2-Propanol c. Ethanol d. tert-Butyl alcohol 13 / 41 Category: chemistry 13. Which of the following is a ketone? a. Propanone b. Methanal c. Ethanal d. Benzaldehyde 14 / 41 Category: chemistry 14. Cannizzaro reaction is shown by aldehydes which: a. Are aromatic b. Are aliphatic c. Have α-hydrogen d. Do not have α-hydrogen 15 / 41 Category: chemistry 15. Tollens’ reagent is used to distinguish between: a. Aldehyde and ketone b. Alcohol and aldehyde c. Aldehyde and ester d. Ketone and acid 16 / 41 Category: chemistry 16. 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 17 / 41 Category: chemistry 17. In Williamson ether synthesis, which alkyl halide is least suitable? a. Isopropyl bromide b. Ethyl bromide c. Methyl bromide d. tert-Butyl bromide 18 / 41 Category: chemistry 18. F. Wohler synthesised an organic compound, urea from an inorganic compound. That is ....... a. Urea b. Uric acid c. Ammonia d. None of the above 19 / 41 Category: chemistry 19. Which reagent converts aldehydes into corresponding alcohols? a. Fehling’s solution b. KMnO₄ c. Tollens’ reagent d. NaBH₄ 20 / 41 Category: chemistry 20. 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. 16 mL b. 4 mL c. 12 mL d. 8 mL 21 / 41 Category: chemistry 21. Which of the following depends on temperature : a. Molality b. Mole Fraction c. Weight percentage d. Molarity 22 / 41 Category: chemistry 22. L mol–1 s–1 is unit of rate constant for second order reaction. a. False b. True 23 / 41 Category: chemistry 23. 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. three b. one c. zero d. two 24 / 41 Category: chemistry 24. The molarity of a solution containing 5 g of NaOH in 450 mL solution is 0.278 mol dm–3. a. True b. False 25 / 41 Category: chemistry 25. The major product formed when phenol reacts with bromine water is: a. 2,4,6-Tribromophenol b. Bromobenzene c. p-Bromophenol d. o-Bromophenol 26 / 41 Category: chemistry 26. Which compound gives a positive Fehling’s test? a. Acetophenone b. Acetone c. Benzaldehyde d. Formaldehyde 27 / 41 Category: chemistry 27. Which of the following does NOT give silver mirror test? a. Formaldehyde b. Benzaldehyde c. Acetone d. Ethanal 28 / 41 Category: chemistry 28. Aldehydes can be prepared by oxidation of: a. Tertiary alcohols b. Primary alcohols c. Phenols d. Secondary alcohols 29 / 41 Category: chemistry 29. Phenol is more acidic than ethanol because: a. Ethoxide ion is stabilized by resonance b. Phenol forms hydrogen bonds c. Phenoxide ion is stabilized by resonance d. Phenol has higher molecular mass 30 / 41 Category: chemistry 30. Which ether on reaction with excess HI gives two different alkyl iodides? a. Diethyl ether b. Dimethyl ether c. Diphenyl ether d. Methyl ethyl ether 31 / 41 Category: chemistry 31. Which of the following alcohols shows maximum intermolecular hydrogen bonding? a. Propan-2-ol b. Glycerol c. Ethanol d. Methanol 32 / 41 Category: chemistry 32. If the molarity of dilute solution is doubled, then the molal depression constant will be : a. unchanged b. half c. triple d. double 33 / 41 Category: chemistry 33. Anisole on nitration gives mainly: a. m-Nitroanisole b. p-Nitroanisole c. o-Nitroanisole d. Nitrobenzene 34 / 41 Category: chemistry 34. Which one of the following is the strongest acid? (NEET 2019) a. Ethanol b. Water c. p-Nitrophenol d. Phenol 35 / 41 Category: chemistry 35. What is the type of hybridisation of each carbon in the following compound? CH3CH=CHCN a. sp3, sp, b. sp3, sp2, sp2, sp c. sp3, sp2 d. sp3 36 / 41 Category: chemistry 36. The functional group present in aldehydes is: a. –COOH b. –CO– c. –CHO d. –OH 37 / 41 Category: chemistry 37. Which one is an ether? (NEET 2012) a. C₆H₅OH b. CH₃COOH c. CH₃CH₂OH d. CH₃OCH₃ 38 / 41 Category: chemistry 38. Major product when phenol reacts with chloroform and NaOH followed by acidification is: a. Chlorobenzene b. Benzaldehyde c. Salicylaldehyde d. Benzoic acid 39 / 41 Category: chemistry 39. The boiling point of aldehydes and ketones is higher than hydrocarbons because of: a. Ionic bonding b. Van der Waals forces c. Dipole–dipole interaction d. Hydrogen bonding 40 / 41 Category: chemistry 40. 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 41 / 41 Category: chemistry 41. Which compound is used in the preparation of bakelite? a. Benzaldehyde b. Acetophenone c. Acetone d. Formaldehyde Your score isThe average score is 72% 0% Restart quiz
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