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

Related Mcqs:

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

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

2. 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...

3. Percentage of calcium in calcium carbonate is___________________?

   A. 80% B. 30% C. 40% D. 20%...

4. Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ?

   A. carbonic acid B. ethanol C. acetic acid D. methanoic acid...

5. What is the Chemical formula of Zinc Hydroxide _________ ?

   A. Zn(OH)2 B. ZNO2 C. Zn2(OH)3 D. ZnOH Submitted by: Rashid Mehmood...

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. Which of the following do not give aldol condensation reactions ?

    A. formaldehyde B. acetaldehyde C. diemthyl ketone D. propionaldehyde...