Condensation Polymerization

Q. why alkanes are insoluble in water and radiallysoluble in organic solvents?

Q. Melamine polymer is a copolymer of:

1. Melamine and acetaldehyde
2. Melamine and formaldehyde
3. Phenol and formaldehyde
4. None of the above

Q.

Which one of the following is not a condensation polymer ?

1. Melamine

2. Glyptal

3. Dacron

4. Neoprene

Q. 19. Assertion silicones are hydrophobic in nature reason: Si-0-si linkages are most sensitive why the reason is not true explain

Q. For which organic molecule do we use the term acetylene ? Is ethylene also used for the same particular compound ?

Q.

The correct functional group X and the reagent/reaction conditions Y in the following scheme are


(IIT-JEE, 2011)

1. $X=COOC{H}_3,Y=H_2/Ni/heat$

2. $X=CON{H}_2,Y=H_2/Ni/heat$

3. $X=CON{H}_2,Y=B{r}_2/NaOH$

4. $X=CN,Y=H_2/Ni/heat$

Q. Polymerization of glycol with dicarboxylic acids is

1. Chain growth polymerization
2. Condensation polymerization
3. Gives polyacrylonitrile
4. All of above

Q.

Which of the following organic compounds polymerizes to form the polyester dacron ?

1. Propylene and para $HO-\left(C_6{H}_4\right)-OH$

2. Benzoic acid and ethanol

3. Terephthalic acid and ethylene glycol

4. Benzoic acid and para $HO-\left(C_6{H}_4\right)-OH$

Q.

One of the ways in which monomers are converted to polymeric form is by [DCE 2002]

1. Hydrolysis of monomers

2. Condensation reaction between monomers

3. Protonation of monomers

4. None of these

Q. Match $List-I$ (Monomer) with $List-II$ (Polymer) and select the correct answer using the codes given below the lists:
$\begin{array}{cc}\text{List-I}& \text{List-II}\\ \left(I\right)\text{Hexamethylenediamine}& \text{A.Bakelite}\\ \left(II\right)\text{Phenol}& \text{B. Dacron}\\ \left(III\right)\text{Phthalic acid}& \text{C. Glyptal}\\ \left(IV\right)\text{Terephthalic acid}& \text{D. Melamine}\\ & \text{E. Nylon-6, 6}\end{array}$

1. $I-E,II-A,III-B,IV-C$
2. $I-E,II-A,III-C,IV-B$
3. $I-D,II-C,III-A,IV-B$
4. $I-D,II-C,III-A,IV-B$

Q.

Which of the following is not a condensation polymer?

1. Nylon-6, 6

2. Nylon-6

3. Dacron

4. Buna-S