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