The preparation of benzene from acetylene can also be said as_________________?

Related Mcqs:

1. What catalyst is employed when benzene is prepared from acetylene at 70°C?

   A. Cr2O3 + A2O3 + SiO2
   B. Raney nickel
   C. Organo-nickel
   D. Ni 250 – 300°C

2. In benzene sulphonic acid the sulphonic group is attached with benzene ring through ___________________?

   A. Hydrogen
   B. Oxygen
   C. Sulphur
   D. OH

3. Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?

   A. Two
   B. Three
   C. Four
   D. Five

4. The resonance energy of benzene is__________________?

   A. 150.5 kJ/mol
   B. 250.5 kJ/mol
   C. 150.5 Cal/mol
   D. 250.5 Cal/mol

5. Which one of the following statement is not correct about benzene ?

   A. On hydrogenation 208 KJ/mole is liberated
   B. C-H bond length in benzene is 1.09 A?
   C. Molecular mass of benzene is 78.108
   D. Resonance energy of benzene is 150.5 K Cal/mole

6. Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?

   A. Dows process
   B. Friedel & Craft acylation
   C. Friedel & Craft alkylation
   D. Clemmenson reduction

7. Aniline is a derivative of benzene which contains__________________?

   A. Imino group
   B. Amino group
   C. Amide group
   D. Nitro group

8. By which method the molecular mass of benzene was determined as 78.108 ?

   A. Specific gravity method
   B. Vapour density method
   C. X-ray diffraction method
   D. Distillation methos

9. Benzene does not undergo___________________?

   A. Substitution reaction
   B. Addition reaction
   C. Polymerization reactions
   D. Oxidation reactions

10. Benzene is heated in air with V2O5 at 450°C it undergoes________________?

    A. Substitution reaction
    B. Addition reaction
    C. Elimination reaction
    D. Oxidation reaction