Chemistry Question Bank

X is heated with soda-lime and gives propane, X is

Assertion: Rates of nitration of benzene and hexadeuterobenzene are different. Reason: The C—H bond is stronger than the C—D bond.

Assertion: Friedel-Craft’s reaction is used to introduce an alkyl or acyl group in the benzene nucleus. Reason: Benzene is a solvent for Friedel-Craft’s alkylation of bromobenzene.

Assertion: Alkynes are more reactive towards nucleophilic addition reaction as compared to alkenes. Reason: Alkynes contain two pi bonds, while alkenes have only one bond.

Which of the following hydrocarbons have only one structure?

Assertion:1-butene on reaction with HBr in the presence of a peroxide produces 1-bromobutane. Reason: It involves the formation of a primary radical.

Which of the following compounds can be best prepared by Wurtz-reaction?

X is heated with soda lime and gives ethane. X is

Butane (C4H10) has ...A... chain isomers. Here, A refers to

Structural isomers which differ in chain of carbon atoms are known as

Assertion: The addition of HBr on 2-butene gives two isomeric products. Reason: Addition of HBr on 2-butene follows Markownikoff’s rule.

For the formation of toluene by Friedal Craft reaction, reactants used in presence of anhydrous AlCl3 are

Select the true statement about benzene amongst the following

Which among the following groups when attached to benzene ring will direct the incoming electrophile predominantly to the meta position? (I) – CH3 (II) –CH2Cl (III) (IV) –CCl3 (V) –NHCOCH3

Product The main product is (a) (b) (c) (d)

Ethylbenzene with bromine in presence of FeBr3, predominantly gives (a) (b) (c) (d)

Alkanes having difference in properties due to difference in their structures are known as

An aromatic compound ‘X’ with molecular formula C8H10 on nitration gives one mononitro derivative and three dinitro derivatives. Compound ‘X’ would be

Consider the following statements : A hydrocarbon of molecular formula C5H10 is a I. monosubstituted alkene II. disubstituted alkene III. trisubstituted alkene Which of the following statement(s) is(are) correct?

Which one of the following reactions is expected to readily give a hydrocarbon product in good yields? (a) Electrolytic RCOOK oxidation -> (b) Br2 RCOO Ag -> (c) Br2 RCOO Ag ->

In the given reactions : Br Na,ether Na,ether (i)CH Br X Y Z hv Br NaOH NaOH (ii)CH COOH X Y Z CaO hv -> -> -> -> -> -> Identify X, Y and Z. X Y Z

Match the column I with column II and mark the appropriate choice. Column I Column II (A) n-butane 2-methylpropane (i) Free radical substitution (B) hv CH Cl CH Cl -> (ii) Wurtz reaction (C) RCOONa + soda lime RH (…

Which of the following statements is true ?

Consider the below reaction and identify the missing reagent/chemical (NEET 2021) + NaOH + ? CH CH COO Na Heat CH CH Na CO ->

The number of chain isomers of C5H12 are