NMDCAT Practice test + Notes Chapter #9NMDCAT Practice Test Chapter no 9Attempt your practice test and evaluate the preparation level. This Chapter includes Alkyl Halide+ Alcohol & Phenol + Aldehyde & Ketone 30 Dear Students 25 minutes are given to solve 25 MCQs.Your result will be displayed at the end of the quiz.Created on September 01, 2022 By Umair Ali khan NMCAT Chemistry Chapter 9 Practice Test 1 / 25Why is it necessary to distil aldehyde formed from oxidation of primary alcohol through acidified potassium dichromate (VI) solution or acidified sodium dichromate (VI) solution? a) Aldehyde formed is unstable and decomposes back to the original precursor i.e. primary alcohol. b) Aldehyde formed may react with primary alcohol, the original reactant c) Aldehyde may be oxidized further to a ketone. d) Aldehyde formed may be oxidized further to Carboxylic acid 2 / 25The reaction of aldehydes and ketones with ammonia derivative ***G-NH₂ to form compounds containing the group C=N-G and water is known as _______reaction. a) Nucleophilic addition b) Electrophilic addition c) Nucleophilic substitution d) Addition Elimination 3 / 25Which of the following gives a positive iodoform test as well as a silver mirror test? a) 3-pentanone b) Propanal c) Ethanal d) Acetone 4 / 25Aldehydes and small methyl ketones react with a saturated aqueous solution of sodium bisulphite to form a crystalline a) Yellow precipitate b) Brick red precipitate c) Wine red precipitate d) White precipitate 5 / 25Aldehyde and ketone react with hydroxylamine to form _______ a) Hydrazone b) Acetal c) Oxonium ion d) Oxime 6 / 25Reaction of ethanal and propanone with HCN is example of ____________ reaction. a) Nucleophilic substitution b) Addition-Elimination c) Electrophilic addition d) Nucleophilic addition 7 / 25Aldehyde and ketone react with 2,4-DNPH to form ________ a) Hydrazone b) Acetal c) Oxonium ion d) Oxime 8 / 25When aliphatic aldehyde is treated with Fehling's solution, a brick-red precipitate of _________ is formed a) Copper (I) oxide b) Copper (II) oxide c) Copper (II) hydroxide d) Copper (I) hydroxide 9 / 25Upon hydrogenation of phenol at 150°C in the presence of Ni catalyst, we get a) Benzene-1,3-diol b) Benzoic acid c) Benzene d) Cyclohexanol 10 / 25Which pair is incorrectly matched? a) Iso-Propyl alcohol, Secondary alcohol b) Propanol, Primary alcohol c) Iso-Butyl alcohol, Secondary alcohol d) Neopentyl alcohol, primary alcohol 11 / 25Due to the involvement of the negative charge of oxygen in the ring of benzene a) Phenoxide ion attains stability b) Four resonating structures form c) pH of its solution becomes less than 4 d) Reactivity of phenol increases 12 / 25Ethers can be obtained from alcohols by which type of reaction? a) Oxidation b) Esterification c) Dehydration d) Dehydrogenation 13 / 25In the reaction of alcohol, if the intermediate form is a carbocation, this means that a) Alcohols is reacting with Na b) Alcohol is reacting with acetic acid c) Alcohol ionizes as carbocation and OH- in water d) C-O bond of alcohol breaks. 14 / 25Hydroxy derivatives of paraffins are a) Ethers b) Alkanone c) Alcohols d) Phenol 15 / 2550% retention of molecule configuration is observed in a) SN1 b) SN2 c) E1 d) E2 16 / 25The first step is the same for which mechanism a) SN1 and SN2 b) E1 and E2 c) SN2 and E2 d) SN1 and E1 17 / 25CN-attacks on which alkyl halide to give propane nitrile? a) Propyl Chloride b) Iso-propyl chloride c) Bromobutane d) Chloroethane 18 / 25In β-Elimination reaction, nucleophile attacks on a) α - Carbon b) β - Carbon c) β -Hydrogen d) Electrophilic halogen atom 19 / 25The product formed, when excess of ammonia is allowed to react with ethyl bromide. a) Ethyl amine b) Diethyl amine c) Triethyl amine d) Triethyl aQuaternary ethyl aminemine 20 / 25In tertiary alkyl halides, the halogen atom is attached to a carbon atom which is further attached to _______ carbon atoms. a) 1 b) 2 c) 3 d) 4 21 / 25The rate equation, Rate = k [Alkyl Halide] can be considered for a) E1 mechanism b) E1 and SN1 c) SN2 and E1 d) SN2 only 22 / 25Attacking of Nucleophile and leaving of leaving group happens simultaneously in: a) E1 b) E2 c) SN1 d) SN2 23 / 25In SN reactions of alkyl halides, Nucleophile attacks on a) Nucleophilic Halogen atom b) Electrophilic carbon atom c) Leaving group d) can attack on both carbon atom and halogen atom 24 / 252-Iodo-2-methylpentane is an example of a) 1° alkyl halide b) 2° alkyl halide c) 3° alkyl halide d) Dihaloalkane 25 / 25Which of the following is deciding factor for reactivity of alkyl halide a) Bond polarity b) Bond energy c) Bond length d) Both 'A' and 'B' Write your Name and see your result. 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Your score isThe average score is 63%Share to your social media, or take a screenshot Facebook 0% Restart quiz Exit Send feedback NMDCAT PreparationPages: 1 2 3 4 5 6 7 8 9 10 11 Tags: Alcohol and phenol, aldehyde and ketones, Alkyl halide, KETS, NMDCAT chapter 9, online KIPS NMDCAT, Online NMDCAT Practice Tests, Online NMDCAT PreparationPost author:Umair Ali khanPost published:September 1, 2022Post category:Latest Posts / MDCAT Preparation / Online MCQs (Quiz) Please Share This Useful Info Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Read more articles Previous PostOnline NMDCAT Practice test Chapter # 8 Next PostNMDCAT Practice test + Notes Chapter #10 You Might Also Like How to prepare FSc part 1 chapter 3 Chemistry through notes and quizzesNovember 29, 2021 Reaction Kinetics Notes Class11 ChemistryOctober 1, 2023 How to solve questions from experimental techniques in chemistry (quiz, Short questions) from class 11 chemistryNovember 3, 2021Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment. 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