Hydrocarbons — practice questions
85 curated practice questions from Hydrocarbons (Chemistry JEE Main, NTA Exams) — 53 easy, 30 medium, 2 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- In electrophilic aromatic substitution reaction, a phenyl substituent on the aromatic ring is
- The gas liberated by the electrolysis of dipotassium succinate solution is:
- When a hydrocarbon A undergoes complete combustion it requires 11 equivalents of oxygen and produces 4 equivalents of…
- The major product formed in the Friedel-Craft acylation of chlorobenzene is (Jee Main 2023)
- In case of addition of HX to an alkene, Markovnikov originally stated that
- Given below are two statements: Statement I: Nitration of benzene involves the following step – Statement II: Use of…
- On mixing a certain alkane with chlorine and irradiating it with ultraviolet light, it forms only one monochloroalkane…
- HBr reacts with CH 2 = CH – OCH 3 under anhydrous conditions at room temperature to give
- Arrange the following in decreasing order of reactivity towards EAS (electrophilic aromatic substitution) array l (a)…
- The treatment of CH 3 MgX with CH 3 C C – H produces
- Ozonolysis of an organic compound given formaldehyde as one of the products. This confirms the presence of
- In the chain propagation steps in the free-radical chlorination of methane. which of the following is not possible…
- Arrange the following in the increasing order of reactivity towards nitration array l (I) (II) (III) (IV) (V) array
- Compound (X) O _ 3 , Zn - H _ 2 O Find the structure of (X).
- Which of the following reacts with Tollen’s reagent giving white precipitate ?
- What will be the major product of following sequence of reactions? (JEE Main 2022) n- Bu -= [( fin ) sind m st _ 1 , H…
- The correct order of reactivity in electrophilic substitution reaction of the following compounds is: array l A B C D…
- The one giving maximum number of isomeric alkenes on dehydrohalogenation reaction is (excluding rearrangement) (Jee…
- Which of the following compound does not evolve CO 2 gas, when undergo oxidative ozonolysis ?
- The hydrocarbon which can react with sodium in liquid ammonia to yield ionic compounds is
- Consider the following statements I: Hyperconjugation helps in increasing electron-density at ortho and para-sites in…
- reagent used for the reaction :
- Choose the correct set of reagents for the following conversion trans ( Ph - CH = CH - CH _ 3 ) cis ( Ph - CH = CH - CH…
- One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular mass of 44 u. The…
- Decreasing order of reactivity towards electrophilic substitution for the following compound is array l (a) (b) (c) (d)…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: Treatment…
- Which one of the following has the smallest heat of hydrogenation per mole?
- Given below are two statements. Statement I: The presence of weaker π-bonds make alkenes less stable than alkanes…
- Above reaction is an example of :
- Which of the following compounds will undergo bromination most rapidly using Br 2 , FeBr 3 ?
- On catalytic reduction with H 2 /Pt how many alkenes will give iso-pentane ?
- The product of following reaction is C 6 H 6 + Cl 2 hv ?
- (A) + Cl 2 hv monochloro product To maximise the yield of monochloro product in the above reaction ?
- In desulphonation of benzene sulphonic acid, on treatment with steam, electrophile is
- Elimination of bromine from 2-bromobutane results in the formation of
- Catalytic dehydrogenation of n–heptane in the presence of Cr 2 O 3 /Al 2 O 3 at 750 K gives
- Which cycloalkane has the lowest heat of combustion per CH 2 group?
- Product (B) of the reaction is :
- Identify (B) and (C) and how are (A) and (C) related? (Jee Main 2024)
- Given below are two statements: Statement (I): The group in Aniline is ortho and para directing and a powerful…
- Major product of the following reaction is - (Jee Main 2024)
- Which of the following is the major product when 1-butanol is heated with concentrated H 2 SO 4 ?
- The reaction of toluene with Cl 2 in presence of FeCl 3 gives predominantly
- On heating a mixture of sodium benzoate and sodalime, the following is obtained
- The major organic compound formed by the reaction of 1,1,1-trichloroethane with silver powder is
- In the following sequence of reactions CH _ 3 CH = CHCH _ 3 O _ 3 ~A [ Zn ] H _ 2 O ~B . The compound B is
- Which is the most suitable reagent among the following to distinguish compound (3) from the others ? (1) CH _ 3 C C …
- The reagent needed for converting is:
- Alkene + H 2 O H ^ Alcohol Which of the following statements about this reaction is correct ?
- Decreasing order of dehydration of the following alcohols is array l a b c d array (Jee Main 2023)
- Rank the following compounds with respect to increasing acidity (1) 1-butene (2) butane (3) 1-butyne (4) NH 3
- 2-herente [( m ) H_ 2 ] ( o O_ 1 . Products The two products formed in above reaction are – (Jee Main 2023)
- But-2-yne is reacted separately with one mole of Hydrogen as shown below: Bq . Hz ~B o Br CH _ 3 - C _ + B _ 2 C - CH _…
- Consider the following compound array l (I) (II) (III) array The relative reactivity towards halonium ion is such that :
- [ ] Conc. H _ 2 SO _ 4 Major product :
- The arenium ion which is not involved in the bromination of Aniline is. (Jee Main 2024)
- array l (a) array array l (b) array array l (c) array Arrange the above in the decreasing order of reactivity towards…
- In the following reaction ‘X’ is CH _ 3 ( CH _ 2 )_ 4 CH _ 3 [ A HC ] Anor ANCO _ 3 ' X _ mequer produr (Jee Main 2023)
- Which of the following is the major product from bromination of meta-nitrobenzene sulphonic acid ?
- Cyclohexene is ______ type of an organic compound. (Jee Main 2024)
- The major product obtained in the photocatalysed bromination of 2-methylbutane is:
- array l । array Compound X, is :
- Which of the following compound will most easily be attacked by an electrophile? (Jee Main 2024)
- Choose the reagent to carry out the reaction.
- ‘A’ and ‘B’ respectively are: A [ (2) Zn = H _ 2 O ] (1) O _ 3 Ethane-1,2-dicarbaldehyde + Glyoxal/Oxaldehyde B [ (2)…
- An organic compound C 4 H 6 on ozonolysis give HCHO, CO 2 , CH 3 CHO. Compound will be :
- Br ^ * will abstract which of the hydrogen most readily.
- In electrophilic aromatic substitution reactions,–N=O substituent on the aromatic ring is
- Arrange the following compounds in increasing order of rate of aromatic electrophilic substitution reaction array l a b…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. STATEMENT-1…
- Two isomers ‘A’ and ‘B’ with molecular formula C 4 H 8 give different products on oxidation with KMnO 4 in acidic…
- Trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces
- Give the major product of the following reaction 3,3-dimethyl-1-butene + HCl ⟶ Major
- The final product, formed in the following reaction sequence is: (Jee Main 2024)
- Halogenation of which one of the following will yield m-substituted product with respect to methyl group as a major…
- H 3 C CH = CH 2 + HCl Peroxide Product, the intermediate of reaction is :
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. STATEMENT-1…
- Arrange the following in increasing order of reactivity towards nitration A. p-xylene B. bromobenzene C. mesitylene D…
- The major product of the following reaction is (JEE Main 2022)
- Which of the following compounds will not undergo Friedel–Craft acylation when treated with CH 3 CH 2 COCl, AlCl 3 ?
- A hydrocarbon ‘X’ with formula C _ 6 H _ 7 uses two moles of H _ 2 on catalytic hydrogenation of its one mole. On…
- Which of the following compounds can be best prepared by Wurtz-reaction ?
- Identify product A and product B: (Jee Main 2024)
- Reaction of one molecule of HBr with one molecule of 1,3-butadiene at 40ºC gives predominantly
- The major product in. the following reaction (JEE Main 2022)