The resonance energy of benzene is__________________?

Related Mcqs:

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

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

2. How many moles of H2 are added up when benzene is heated with hydrogen in the presence of platinum ?

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

3. 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...

4. Which one of the following methods will not give benzene ?

   A. Heating sod. Salt of Benzoic acid with soda lime B. Distilling phenol with Zn dust C. Chlorobenzene with NaOH at 360°C & 150atm. D. Hydrolysis of benzene sulphonic acid with super heated steam...

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...