Hydrocarbons

n-Butane on monochlorination under photochemical condition gives an optically active compound "P". "P" on further chlorination gives dichloro compounds. The number of dichloro compounds obtained (ignore stereoisomers) is :

1. 3
2. 4
3. 5
4. 6

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

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

An optically active alkyl bromide C4H9Br, reacts with ethanolic KOH to form major compound [A] which reacts with bromine to give compound [B]. Compound [B] reacts with ethanolic KOH and sodamide to give compound [C]. One molecule of water adds to compound [C] on warming with mercuric sulphate and dilute sulphuric acid at 333 K to form compound [D]. The functional group in compound D will be confirmed by :

1. Haloform test
2. Lucas test
3. Silver mirror test
4. Benedict test

An alkane (Y) requires 8 moles of oxygen for complete combustion and on chlorination with Cl2/h , (Y) gives only one monochlorinated product (Z). The total number of primary carbon atoms in (Y) is .

For the following Friedel Craft's alkylation reaction, which of the statements are correct? [figure] Choose the correct answer from the options given below :

1. A and D only
2. B and C only
3. A and C only
4. B and D only

An alkene (X) on ozonolysis followed by reduction gives following products. H- O \|C-H (2 moles), H- O \|C- O \|C- O \|C-H, CH3- O \|C- O \|C- O \|C-CH3 The alkene (X) is :

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

[figure] Compound (X) is subjected to the sequence of reactions as shown above. Molar mass of the major product (Y) formed is g mol-1. (Given molar mass in g mol-1 C : 12, H : 1, O : 16 )

1. 90
2. 118
3. 160
4. 125

One mole of an alkane (x) requires 8 mole oxygen for complete combustion. Sum of number of carbon and hydrogen atoms in the alkane (x) is .

The compound (X) on (i) on heating in the presence of anhydrous AlCl3 and HCl gas gives 2,4-dimethyl pentane (ii) aromatization gives toluene and (iii) cyclisation gives methyl cyclohexane The correct name of compound (X) is:

1. Hept-2-ene
2. Hept-1,3,5-triene
3. Heptane
4. Hept-2,4,6-triene

Given below are two statements for the following reaction sequence. [figure] In the light of the above statements, choose the correct answer from the options given below :

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

Ph-CH=CH2 [HBr](PhCOO)2 Product Consider the above reaction Identify the correct statements. Choose the correct answer from the options given below :

1. A & E Only
2. A, B & D Only
3. A, C & E Only
4. C, D & E Only

The reactions which produce alcohol as the product are : Choose the correct answer from the options given below :

1. B, D and E Only
2. A and D Only
3. A, C and E Only
4. C and D Only

Consider the following compounds : [figure] Arrange these compounds in the increasing order of reactivity with nitrating mixture.

1. c < b < a
2. b < c < a
3. c < a < b
4. b < a < c

But-2-yne and hydrogen (one mole each) are separately treated with (i) Pd/C and (ii) Na/ liq. NH3 to give the products X and Y respectively. [figure] Identify the incorrect statements. Choose the correct answer from the options given below :

1. B and D Only
2. A and C Only
3. A and B Only
4. B and C Only

[figure] Identify (P)

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

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

1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect

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]

Which compound would give 3-methyl-6-oxoheptanal upon ozonolysis?

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

An optically active alkyl halide C4H9Br [A] reacts with hot KOH dissolved in ethanol and forms alkene [B] as major product which reacts with bromine to give dibromide [C]. The compound [C] is converted into a gas [D] upon reacting with alcoholic NaNH2. During hydration 18 gram of water is added to 1 mole of gas [D] on warming with mercuric sulphate and dilute acid at 333 K to form compound [E]. The IUPAC name of compound [E] is :

1. Butan-2-ol
2. But-2-yne
3. Butan-2-one
4. Butan-1-al

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

1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Statement I is correct but Statement II is incorrect
4. Both Statement I and Statement II are incorrect

A molecule (P) on treatment with acid undergoes rearrangement and gives (Q). (Q) on ozonolysis followed by reflux under alkaline condition gives (R). The structure of (R) is given below. [figure] The structure of (P) is

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