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