Hydrocarbons — practice questions
81 curated practice questions from Hydrocarbons (Chemistry Class 11, CBSE) — 81 easy. Every question includes the final answer free; step-by-step worked solutions with a free account.
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- Complete the following reactions by filling most stable intermediate and the product. (i) (ii)
- Which of the following reactions does not show the acidic nature of ethyne?
- Identify X and Y in the following reaction.
- Which one of the following gives only one monochloro derivative?
- One mole of 1,2-dibromopropane on treatment with X moles of NaNH 2 followed by treatment with ethyl bromide gave a…
- The correct order of reactivity towards electrophilic substitution is
- Identify the reagent from the following list which can easily distinguish between 1-butyne and 2-butyne.
- The following reaction is known as C _ 6 H _ 6 + CH _ 3 Cl [ (anhy.) ] AlCl _ 3 C _ 6 H _ 5 CH _ 3 + HCl
- Which of the following alcohols on dehydration gives most stable carbocation?
- Which of the following does not represent polymerisation of alkenes and alkynes?
- Which of the following compounds will show cis-trans isomerism?
- Answer the following question based on the given paragraph . Stability of carbocation, alkyl free radical and alkene…
- Complete the following reactions: (i) C 2 H 5 I + H 2 [ C _ 2 H _ 5 OH ] Zn - Cu X (ii) CH 3 COONa + H 2 O Y (iii) CH 3…
- Which of the following compounds gives methane on reaction with water?
- How many σ and π bonds are present in HC C – CH CH – CH 3 ?
- Which of the following has the lowest boiling point?
- What is the minimum number of carbon atoms of an alkane must have to form an isomer?
- What happens when calcium carbide is treated with water?
- The ozonolysis product(s) of the following reaction is(are) CH _ 3 CH _ 2 - C CH [ (ii) H _ 2 O ] (i) O _ 3 Product(s)
- The IUPAC name of the compound having formula is
- During halogenation of alkanes the halogens and alkane show a specific trend. Which of the following statements is not…
- An alkyl halide X reacts with sodium to form 3,8-dimethyldecane. What is X ?
- Ethane is formed during the formation of chloromethane by chlorination of methane because
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) Alkyl halide + Sodium in…
- What happens when methane reacts with conc. HNO 3 at high temperature?
- Dehydrohalogenation involves removal of the halogen atom together with a hydrogen atom from a carbon atom adjacent to…
- Fill in the blanks with appropriate words. Benzene has a planar structure. All carbon atoms in benzene are ___I___…
- Nitration of benzene is carried out with conc. HNO 3 in presence of conc. H 2 SO 4 . The role of conc. H 2 SO 4 is to…
- Identify the unknown compounds.
- Which of the following will give 2,2-dibromopropane on reaction with HBr?
- When n -butane is treated with chlorine, how many monochloro products are formed?
- Presence of unsaturation in organic compounds can be tested with
- Propanal-1 and pentan-3-one are the ozonolysis products of an alkene. What is the structural formula of alkene?
- Chlorination of methane does not occur in dark because
- Complete the reaction with suitable reagents and compounds.
- An organic compound C 6 H 12 ( X ) on reduction gives C 6 H 14 ( Y ). X on ozonolysis gives two aldehydes C 2 H 4 O (I)…
- Match the column I with column II and mark the appropriate choice. Column I Column II (A) n -Butane 2-Methylpropane (i)…
- When 1-butyne undergoes oxymercuration with the help of HgSO 4 + H 2 SO 4 , the product(s) formed is/are
- Which of the following compounds will react with Na to form 4,5-diethyloctane?
- Which of the following groups is o-p directing but deactivates benzene ring for electrophilic substitution?
- A compound X decolourises Br 2 water and reacts slowly with conc. H 2 SO 4 to give an addition product. X reacts with…
- An unsaturated hydrocarbon was treated with ozone and resulting ozonide on hydrolysis gives 2-pentanone and…
- How many structures are possible for C 5 H 8 with one triple bond?
- An alkene 3-ethylpent-2-ene will give which of the following products on ozonolysis?
- Identify the product for the following reaction: CH CH + HOCl
- Which of the following steps is not correct in the mechanism of electrophilic substitution of benzene?
- Choose the correct reagents used in the conversion.
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- The compound formed when alcoholic solution of ethylene dibromide is heated with granulated zinc is
- In the given reactions: (i) CH _ 3 Br Na , ether X [h u ] Br _ 2 Y Na , ether Z (ii) CH _ 3 COOH NaOH X [ CaO ] NaOH Y…
- Identify the unknown compounds.
- In halogenation of aromatic hydrocarbon, a halogen carrier is used which is generally a Lewis acid. The main function…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- A mixture of 1-iodoethane and 1-iodopropane is treated with sodium metal and dry ether to carry out Wurtz reaction…
- The correct trend of acidic nature of the following alkynes is
- Ozonolysis products of 2-pentyne after decomposition of ozonide with water and oxidation are
- Which of the following reactions does not show the correct products of the reaction?
- Which of the following products is formed when n -heptane is passed over (Al 2 O 3 +Cr 2 O 3 ) catalyst at 773 K?
- An alkene X is obtained by dehydration of an alcohol Y . X on ozonolysis gives two molecules of ethanal for every…
- The products for the following reactions are (i) (ii)
- Dehydrohalogenation involves removal of the halogen atom together with a hydrogen atom from a carbon atom adjacent to…
- Complete the following reaction by identifying X and Y . CH _ 3 CH _ 2 C CH NaNH _ 2 X C _ 2 H _ 5 Br Y
- Which of the following species does not show aromaticity?
- Name the products of the following reactions. (I) C 6 H 6 reacts with methyl chloride in presence of AlCl 3 . (II) C 6…
- Dehydrohalogenation involves removal of the halogen atom together with a hydrogen atom from a carbon atom adjacent to…
- Which alkane is produced when sodium salt of butanoic acid is heated with soda lime?
- The correct IUPAC name of the compound is
- Ozonolysis of 2,3-dimethylbut-1-ene followed by reduction with zinc and water gives
- Which of the following isomeric heptanes can yield seven different monochlorinated products upon free radical…
- An alkane C 6 H 14 gives two monochloro derivatives on chlorination. Its possible structure is
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- Few reactions of alkanes are given below. Identify the name of the reaction which is not correctly matched with the…
- In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice…
- Similar to alkenes and alkynes benzene also undergoes ozonolysis. In the sequence of the given reaction identify X and…
- Match the column I with column II to identify the products of oxidation of alkanes and mark the appropriate choice…
- Which of the following alkynes can be identified and distinguished from the rest of the alkynes on reaction with…
- Identify the polynuclear aromatic compound which is aromatic.
- What is the order of reactivity of hydrogen atoms attached to carbon atom in an alkene?
- Although benzene is highly unsaturated it does not undergo addition reactions. The explanation of this can be suggested…