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

Related Mcqs:

1. Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is_________________?

   A. oxidation
   B. elimination
   C. condensation polymerization
   D. additional polymertization

2. 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

3. Formaldehyde on condensation in the presence of calcium hydroxide: ______________?

   A. Formose 
   B. Fructose
   C. Maltose
   D. Xylose

   Submitted by: Said wali shah

4. The hydrogenation of phenol in the presence of Ni and heat gives_________________?

   A. cyclohexane
   B. n – hexane
   C. 1 – hexanol
   D. cyclohexanol

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

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

6. Which of the following is not a use of formaldehyde ?

   A. in silvery mirror
   B. in making medicine urotropine
   C. in making throat lozenges
   D. in making acetic acid

7. Formalin is ___________ solution of formaldehyde in water?

   A. 10%
   B. 20%
   C. 40%
   D. 60%

8. Formaldehyde and lactose are combined to produce throat lozenges named as__________________?

   A. formamint
   B. lactomint
   C. aldomint
   D. formalactose

9. Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?

   A. 60%
   B. 50%
   C. 52%
   D. 8%

10. Phenol was isolated by Runge from________________?

    A. vegetable oil
    B. coaltar
    C. wood
    D. none of these