During sulphonation of benzene H2SO4 generates the electrophile _________________?

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. Which one of the following species is not an electrophile ?

   A. NH3
   B. Br+
   C. H+
   D. BF3

3. Which compound will readily undergo sulphonation ?

   A. Benzene
   B. Nitro benzene
   C. Toluene
   D. Chlorobenzene

4. The reaction of carboxylic acids with alcohols in presence of cone. H2SO4 is called _________________?

   A. esterification
   B. neutralization
   C. hydrolysis
   D. saponification

5. The pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is_________________?

   A. 3
   B. 2.7
   C. 2
   D. 1.5

6. Which of the following solutions of H2SO4 is more concentrated ?

   A. 1 Molar solution
   B. 1 molal solution
   C. 1 normal solution
   D. all have same concentration

7. Density of H2SO4 in lead accumulator is__________________?

   A. 1.25g/cm3
   B. 1.3g/cm3
   C. 1.20g/cm3
   D. 1.15g/cm3

8. Consider the following reaction- 2KCIO3 + H2C2O4 + H2SO4 ? K2SO4 + 2H2O + 2CO2 + Oxide Which oxide of chlorine is produced in the above reaction ?

   A. Cl2O
   B. ClO2
   C. Cl2O6
   D. Cl2O7

9. K2Cr2O7/H2SO4 generate____________________?

   A. Oxygen
   B. Hydrogen
   C. Nascent oxygen[O]
   D. Nascent hydrogen[H]

10. The PH of the 0.0032 M H2SO4 is__________?

    A. 3.2
    B. 4.0
    C. 2.198
    D. 1.0

    Submitted by: Muhammad Ali Kunbhar