Hydrocarbons · Question 16

The cycloalkene (X) on bromination consumes one mole of bromine per mole of (X) and gives the product (Y) in which C : Br ratio is 3:1. The percentage of bromine in the product (Y) is %. (Nearest integer) (Given : molar mass in g mol-1 H : 1, C : 12, O : 16, Br : 80)

Consider the following reaction : [figure] The product Y formed is :

1. 2-methylhex-3-yne
2. 5-methylhex-2-yne
3. Isopropylbut-1-yne
4. 2-methylhex-2-yne

The dibromo compound [P] (molecular formula: C9H10Br2) when heated with excess sodamide followed by treatment with dilute HCl gives [Q]. On warming [Q] with mercuric sulphate and dilute sulphuric acid yields [R] which gives positive Iodoform test but negative Tollens' test. The compound [P] is :

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Identify A in the following reaction. [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]

[figure] 'P' is

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Choose the correct set of reagents for the following conversion. [figure]

1. Cl2/ anhy. AlCl3; Br2/Fe; alc. KOH
2. Cl2/Fe; Br2/ anhy. AlCl3; aq. KOH
3. Br2/Fe; Cl2, ; alc. KOH
4. Br2/ anhy. AlCl3; Cl2, ; aq. KOH

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below

1. Statement I is false but Statement II is true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Both Statement I and Statement II are true

Identify the structure of the final product (D) in the following sequence of the reactions : [figure] Total number of sp2 hybridised carbon atoms in product D is .

Predict the major product of the following reaction sequence: [figure]

1. [figure]
2. [figure]
3. [figure]
4. [figure]

Consider the following molecule(X). [figure] The major product formed when the given molecule (X) is treated with HBr (1 eq) is :

1. [figure]
2. [figure]
3. [figure]
4. [figure]