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