JEE Organic Compounds with Halogens PYQ, Download PDF

Which of the following potential energy (P.E.) diagrams represents the S$$_N$$1 reaction?

The major product of the following reaction is:

The major product in the given reaction is

Identify the correct set of reagents or reaction conditions 'X' and 'Y' in the following set of transformation:

Among the following compounds, which one has the shortest C-Cl bond?

Consider the following compounds

Arrange these compounds in the increasing order of reactivity with nitrating mixture.

The increasing order of the boiling points of the major products A, B and C of the following reactions will be:

2-Methyl propyl bromide reacts with C$$_2$$H$$_5$$O$$^-$$ and gives 'A' whereas on reaction with C$$_2$$H$$_5$$OH it gives 'B'. The mechanism followed in these reactions and the products 'A' and 'B' respectively are:

Arrange the following compounds in the decreasing order of their reactivity towards $$S_N1$$ substitution (rate of solvolysis in aqueous ethanol):

I.

II.

III.

IV.

What is DDT among the following:

The maximum number of RBr producing 2-methylbutane by above sequence of reactions is ________ -
(Consider the structural isomers only)

Consider the following multi-step chemical transformation:
$$\text{Chlorobenzene}\xrightarrow{\text{Mg\ /\ Dry\ Ether}}P\xrightarrow{\text{(i)\ Dry\ Ice\ (CO}_{2}\text{),\ (ii)\ H}_{3}\text{O}^{+}}Q\xrightarrow{\text{PCl}_{5}}R$$

What is the final organic product $$R$$?

Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces

The major product formed in the following reaction is:

Which of the following will most readily give the dehydrohalogenation product?

Which of the following compounds will form the precipitate with aq. AgNO$$_3$$ solution most readily?

Consider the following reaction sequence involving a haloalkane:

$$\text{CH}_{3}-\text{CH}_{2}-\text{CH}_{2}-\text{Br}\xrightarrow{\text{alc.\ KOH,\ }\Delta }X\xrightarrow{\text{HBr\ (gas),\ no\ peroxides}}Y\xrightarrow{\text{aq.\ KOH}}Z$$

Identify the correct IUPAC name of the final organic product $$Z$$:

Which of the following reaction combinations will yield a pair of enantiomers (a racemic mixture) as the major organic product?

The correct order of reactivity of the following benzyl halides towards reaction with KCN is:

The major product obtained in the following reaction is,

The increasing order of the reactivity of the following halides for the S$$_{N}$$1 reaction is

Identify the products [A] and [B], respectively in the following reaction :

An 'Assertion' and a 'Reason' is given below. Choose the correct answer from the following options:
Assertion (A): Vinyl halides do not undergo nucleophilic substitution easily.
Reason (R): Even though the intermediate carbocation is stabilized by loosely held $$\pi$$-electrons, the cleavage is difficult because of the strong bonding.

Two isomers (A) and (B) with Molar mass 184 g/mol and elemental composition C, 52.2%; H, 49% and Br 42.9% gave benzoic acid and p-bromobenzoic acid, respectively on oxidation with KMnO$$_4$$. Isomer 'A' is optically active and gives a pale yellow precipitate when warmed with alcoholic AgNO$$_3$$. Isomer 'A' and 'B' are, respectively:

The decreasing order of reactivity of the following organic molecules towards AgNO$$_3$$ solution is:

Given below are two statements:
Statement I: The dipole moment of R-CN is greater than R-NC and R-NC can undergo hydrolysis under acidic medium to produce $$O\\||\\R-C-OH$$.

Statement II: R-CN hydrolyses under acidic medium to produce a compound which on treatment with $$SOCl_{2}$$, followed by the addition of $$NH_{3}$$ gives another compound(x). This compound (x) on treatment with NaOCl/NaOH gives a product, that on treatment with $$CHCl_{3}/KOH/ \Delta$$ produces R-NC

In the Light of the above statements, choose the correct answer from the options given below

Identify $$A$$ and $$B$$ in the given chemical reaction sequence

The product formed in the first step of the reaction with excess Mg / Et$$_2$$O / Et = $$C_2H_5$$ is

Compound from the following that will not produce precipitate on reaction with AgNO$$_3$$ is