Cis – 2 – butene and trans – 2 – butene are __________

(a)

conformational isomers

(b)

structural isomers

(c)

configurational isomers

(d)

optical isomers

\(\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } -\underset { \overset { | }{ Br } }{ { CH }_{ 2 } } \overset { \left( A \right) }{ \longrightarrow } CH\equiv CH,\) where A is ___________

(a)

Zn

(b)

Conc H₂SO₄

(c)

alc. KOH

(d)

dil H₂SO₄

In which of the following molecules, all atoms are co-planar ___________

(a)

(b)

(c)

(d)

both (a) and (b)

(a)

(b)

(c)

both (a) and (b)

(d)

             Cl
                           |

Which of the following compounds will not undergo Friedal – crafts reaction easily?(NEET)

(a)

Nitro benzene

(b)

Toluene

(c)

Cumene

(d)

Xylene