401.

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

Propyne and propene can be distinguished by

• conc. H₂SO₄

• Br₂ in CCl₄

• dil. H₂SO₄

• AgNO₃ in ammonia

C₂H₅Cl $\underset{\mathrm{CuI}}{\overset{\mathrm{Li}}{\to }} \stackrel{{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}}{\to } \mathrm{n}-\mathrm{butane}$. This method is

• Wurtz synthesis

• Kolbe synthesis

• Corey House synthesis

• Friedel-Craft synthesis

One of the isomer of the 5^th member of alkyne series is optically active. It is

• 4-methyl pent-2-yne

• 3-methyl pent-1-yne

• 4-methyl pent-1-yne

• 3, 3-dimethyl but-1-yne

Which compound present in diesel?

• Cetane

• TiCl₄

• Cyclo pentandenyl manganese carbonyl

• Iso octane

Acetylene and HCHO react in presence of copper acetylide catalyst to form

• But-2-yne-1, 2-diol

• But-1-yne-1, 4-diol

• But-2-ene-1, 4-diol

• 2-butyne-1, 4-diol

Which of the following substance is not related with HVZ reaction?

• α-bromo acetic acid

• Zn/ Hg

• Cl₂

• Red P

Which of the following compound show acidic nature?

• but-1-yne

• but-2-yne

• but-1-ene

• buta-1, 3-diene