Tag: polymerisation

Quizzes (2) Questions (39)

Questions Related to polymerisation

Multiple choice synthetic polyamides polymerisation chemistry

The compound with which hexamethylene diamine on polymerization gives nylon-6,6 is:

  1. citric acid

  2. adipic acid

  3. oxalic acid

  4. tartaric acid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.


$n HOOC-{(CH _2)} _4-COOH + n H _2N-{(CH _2)} _6-NH _2$ 
$\rightarrow [-OC-{( CH _2)} _4-CO-NH-{(CH _2)} _6-NH-] _n + 2n H _2O$

Multiple choice synthetic polyamides polymerisation chemistry

In which of the following polymer, monomer is not aromatic?

  1. Perlon - L

  2. Polyvinyl pyrrolidone

  3. PTFE

  4. Neoprene
Reveal answer Fill a bubble to check yourself
A,B,C,D Correct answer
Explanation

Porlon-L is a polyamide and a linear non-aromatic structure.

Neoprene is formed by monomer prepared by addition mechanism. PTFE and polyvinyl pyrrolidone also have non-aromatic monomer.

Multiple choice synthetic polyamides polymerisation chemistry

Which factor imparts the crystalline nature to a polymer like nylon?

  1. Strong intermolecular forces like hydrogen bonding between chains.

  2. Van der Waals forces between the polymeric chains.

  3. Close packing of the chains due to ionic bonding between the chains.

  4. Three-dimensional network of chains.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

in nylon, there is strong intermolecular hydrogen bonding between hexamethylene di ammine and di adipic acid,

the nylon is used in making sheets, bristles for brushes and in the textile industry.
so the correct option is [A].

Multiple choice synthetic polyamides polymerisation chemistry

Nylon is a well-known polymer used in fabrics and motor tyres. Nylon$-6,6$ is made from hexamethylenetetramine (having six methyl groups) and :

  1. adipic acid, a six-carbon chain fatty acid

  2. sulphurous acid with six atoms of various elements

  3. sulphure hexafluoride with six fluorine atoms

  4. cobalt hexamine cation with six ammonia ligands
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Nylon is a generic name for a synthetic linear polymer with repeating amide groups $(−NH−CO−)$ which is used in the manufacture of textile fibres. Carothers produced Nylon-66 by the condensation reaction of adipic acid (a dicarboxylic acid with 6 carbon atoms) and hexamethylene-di-amine (a diamine with 6 carbon atoms) give the $[−NH−{(C{H} _{2})} _{6}−NH−CO{(C{H} _{2})} _{4}−CO−]$ repeating unit. Nylon revolutionised the textile industry and was the forerunner for many of today's modern, synthetic fabrics.
Multiple choice synthetic polyamides polymerisation chemistry

Which of the following polymers are used as fibre?

  1. Nylon

  2. Polytetrafluoroethane

  3. Terylene

  4. Buna-S
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nylon is used as fiber because, it is very important substitute of silk, it's other properties is elasticity, strength and resistance for mildew.

So the correct option is [A].

Multiple choice synthetic polyamides polymerisation chemistry

Polymer which has amide linkage is:

  1. nylon-$6,6$

  2. terylene

  3. teflon

  4. bakelite
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Polyamides have the amide linkage.

Example- Nylon 6-6, Nylon 6
Nylon 6, 6 is used in making sheets, bristles for brushes and in the textile industry.

The correct option is [A].

Multiple choice synthetic polyamides polymerisation chemistry

The ratio between the $\pi -$ bonds in the monomers of N-vinylpyrolidone and perlon-L is:

  1. $2 : 1$
  2. $1 : 2$
  3. $3: 2$
  4. $2 : 3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

N-vinylpyrrolidone has a double bond in the vinyl group and one in the carbonyl group (2 total). Perlon-L (Caprolactam) has one double bond in the carbonyl group. The ratio is 2:1.

Multiple choice synthetic polyamides polymerisation chemistry

Which of the following polymers does not have vinylic monomer units?

  1. Acrilan

  2. Nylon

  3. Polystyrene

  4. Neoprene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
 Acrilan  $(-CH _2=CHCN-) _n$
 Polystyrene  $(-C _6H _5-CH _2=CH _2-) _n$
 Neoprene  $(-CH _2=CHCl-) _n$
 Nylon  $(Hexa methylene \,di amine + adipic\,acid) _n$

Only nylon does not have vinylic monomer units.

So the correct option is [B].

Multiple choice synthetic polyamides polymerisation chemistry

The polymer formed by the condensation of hexamethylenediamine and adipic acid is

  1. Teflon

  2. Bakelite

  3. Dacron

  4. Nylon-66
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The polymer formed by the condensation of hexamethylenediamine $\displaystyle (H _2N-(CH _2) _6-NH _2)$ and adipic acid $\displaystyle (HOOC-(CH _2) _4-COOH)$ is Nylon-66.
$\displaystyle H _2N-(CH _2) _6-NH _2+HOOC-(CH _2) _4-COOH  \xrightarrow {\Delta} H _3N^+-(CH _2) _6-NH _3^+O^-OC-(CH _2) _4-COO^-$


$\displaystyle nH _3N^+-(CH _2) _6-NH _3^+O^-OC-(CH _2) _4-COO^-\xrightarrow [-H _2O]{\Delta} \underset{\text{Nylon} 6,6}{[HN-(CH _2) _6-NH \underset {\displaystyle  \underset {\displaystyle \text {O }}{||} }{C}-(CH _2) _4- \underset {\displaystyle  \underset {\displaystyle \text {O }}{||} }{C}] _n}$

Multiple choice biochemical polymers polymerisation chemistry

Nucleic acids are the polymers of __________

  1. nucleosides

  2. nucleotides

  3. bases

  4. sugars
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nucleic acids are made up of individual monomers called nucleotides