The reaction

CH₂ = CH₂ + H₂ $\underset{250 - 300°\mathrm{C}}{\overset{\mathrm{Ni}}{\to }}$ CH₃-CH₃ is called

• Wurtz reaction

• Kolbe's reaction

• Sabatier-Senderens reaction

• Carbylamine reaction

Formation of 2-butene as major product by dehydation of 2-butanol is according to

• Markownikoff's rule

• Saytzeff's rule

• Peroxide effect

• Anti-Markownikoffs rule

Acetic acid dissolved in benzene shows molecular weight

• 60

• 120

• 180

• 240

Ethene gives with acidic KMnO₄ solution

• ethylene glycol

• ethylene oxide

• formaldehyde

• acetaldehyde

The strongest ortho/para directing group is

• -NH₂

• -CH₃

• -Cl

• -C₂H₅

An organic alkadiene on reductive ozonolysis produces
(i) acetaldehyde
(ii) acetone
(iii) 2-methylpropane-1,3-dial
The formula of alkadiene will be

• CH₃C(CH₃)=CHCH(CH₃)CH=CHCH₃

• CH₃CH(CH₃)CH=C(CH₃)CH=CHCH₃

• CH₃C(CH₃)=CHCHC(CH₃)=CHCH₃

• CH₃CH₂CH(CH₃)CH=CHC(CH₃)=CH₂

2-chloro-3-methylbutane is treated with sodium in etherial solution, then it will give

• 2,4-dimethylhexane

• 3,5-dimethylhexane

• 2,3,4,5-tetramethylhexane

• 2,6-dimethyloctane

128.

Which one of the following hydrocarbons has octane number 100?

• 2, 2, 3-trimethylpentane

• 2, 3, 3-trimethylpentane

• 2, 2, 4-trimethylpentane

• 2, 3, 4-trimethylpentane

Which one of the following is the best reagent to accomplish the following conversion ?

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{Br} \stackrel{?}{\to } {\mathrm{CH}}_3-{\mathrm{CH}}_3$

• NaBH₃

• Na|ether

• Zn|C₂H₅OH

• Mg followed by H₃O⁺

Benzene has the following hybridisation

• sp

• sp²

• sp³

• dsp²