Hydrocarbons

Assertion : Staggered conformation of ethane is 12.5 kJ mol^-1 more stable than the eclipsed conformation.

Reason : The two conformations of ethane cannot be separated at room temperature.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

The C-H bond energy in ethane , ethene and ethyne :

• more in ethene

• more in ethane

• more in ethyne

• same in all these

The IUPAC name of the given compound is (CH₃)₃CCH₂C(CH₃)₃

• 2, 3,4,4-tetramethylpentane

• 1, 2, 2, 4-tetramethylpentene

• 2,2,4, 4-tetramethylpentane

• 3, 3-dimethylpentane.

What is 'A.' in the following reaction?

Assertion: Saturated hydrocarbons are chemically less reactive.

Reason : All isomeric paraffins have same parent name.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion: Chloroform is stored in dark coloured bottles.

Reason: Chronic chloroform exposure may cause damage to liver and kidneys.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Assertion : Saturated hydrocarbons are chemically less reactive.

Reason: All isomeric paraftins have same parent name.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

The end product in the sequence would be 

C₃H₇OH $\underset{170°}{\overset{{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}$ A $\stackrel{{\mathrm{Br}}_2}{\to }$ B $\underset{\mathrm{KOH}}{\overset{\mathrm{Alc}.}{\to }}$ C

• CH₃-C$\equiv$CH

• CH₃-C(OH)=CH₂

• CH₂=C=CH₂

• CH₃-CH(OH)-CH₂(OH)

Assertion: Ortho and para-nitrophenol can be separated by steam distillation.

Reason: Para-nitrophenol is steam volatile due to intramolecular hydrogen bonding.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

The function of anhydrous AlCl₃ in the Friedel-Craft's reaction is to :

• absorb water

• absorb HCl

• to produce electrophile

• to produce nucleophile