K2Cr2O7/H2SO4 generate____________________?

Related Mcqs:

1. In K2Cr2O7 the oxidation number of chromium is____________________?

   A. 7
   B. 6
   C. -7
   D. -6

2. Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7 ?

   A. Toluene
   B. Ethyl benzene
   C. n-propyl benzene
   D. All

3. 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

4. Density of H2SO4 in lead accumulator is__________________?

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

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

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

6. Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?

   A. Nylon 66
   B. urotropine
   C. Aniline formaldehyde plastic
   D. Bakelite

7. During sulphonation of benzene H2SO4 generates the electrophile _________________?

   A. HSO4-
   B. SO2
   C. SO3
   D. H+

8. The gas which cannot be dried by conc. H2SO4 ?

   A. SO2
   B. H2S
   C. CO2
   D. C2H4

9. 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

10. Which of the following gases when passed through warm dilute solution of H2SO4 in presence of HgSO4 gives acetaldehyde

    A. CH₄
    B. C₂H₆
    C. C₂H₄
    D. C₂H₂

    Submitted by: Aamir khan Hullio