325091
Thermosetting plastics once set cannot be remoulded and reshaped because of the presence of ____ between the polymeric chains.
1 weak van der Waals' forces
2 strong covalent forces
3 ionic bonds
4 hydrogen bonding
Explanation:
There is extensive cross-linking (strong covalent forces) between different polymer chains in thermosetting polymers or plastics.
CHXII15:POLYMERS
325092
Which of the following is used in glyptal?
1 Terylene
2 Nylon
3 Glyptal
4 Chloroprene
Explanation:
Conceptual Questions
CHXII15:POLYMERS
325093
X= Number of amide linkages in the monomer of nylon - 6 Y= Number of double bonds in the monomer of neopreneThe value of\(\frac{{\text{x}}}{{\text{y}}}\) is
1 1
2 2
3 \(\dfrac{1}{2}\)
4 \(\dfrac{1}{3}\)
Explanation:
\({\rm{x = 1,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y = 2}}\) (chloroprene is monomer of neoprene) \(\frac{{\text{x}}}{{\text{y}}}{\text{ = }}\frac{{\text{1}}}{{\text{2}}}\)
CHXII15:POLYMERS
325094
Which is correct about Rayon?
1 Natural silk
2 Synthetic plastic
3 Artificial silk
4 Natural plastic or rubber
Explanation:
Rayon is semisynthetic fibre which consists of purified cellulose in the form of long threads.
325091
Thermosetting plastics once set cannot be remoulded and reshaped because of the presence of ____ between the polymeric chains.
1 weak van der Waals' forces
2 strong covalent forces
3 ionic bonds
4 hydrogen bonding
Explanation:
There is extensive cross-linking (strong covalent forces) between different polymer chains in thermosetting polymers or plastics.
CHXII15:POLYMERS
325092
Which of the following is used in glyptal?
1 Terylene
2 Nylon
3 Glyptal
4 Chloroprene
Explanation:
Conceptual Questions
CHXII15:POLYMERS
325093
X= Number of amide linkages in the monomer of nylon - 6 Y= Number of double bonds in the monomer of neopreneThe value of\(\frac{{\text{x}}}{{\text{y}}}\) is
1 1
2 2
3 \(\dfrac{1}{2}\)
4 \(\dfrac{1}{3}\)
Explanation:
\({\rm{x = 1,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y = 2}}\) (chloroprene is monomer of neoprene) \(\frac{{\text{x}}}{{\text{y}}}{\text{ = }}\frac{{\text{1}}}{{\text{2}}}\)
CHXII15:POLYMERS
325094
Which is correct about Rayon?
1 Natural silk
2 Synthetic plastic
3 Artificial silk
4 Natural plastic or rubber
Explanation:
Rayon is semisynthetic fibre which consists of purified cellulose in the form of long threads.
325091
Thermosetting plastics once set cannot be remoulded and reshaped because of the presence of ____ between the polymeric chains.
1 weak van der Waals' forces
2 strong covalent forces
3 ionic bonds
4 hydrogen bonding
Explanation:
There is extensive cross-linking (strong covalent forces) between different polymer chains in thermosetting polymers or plastics.
CHXII15:POLYMERS
325092
Which of the following is used in glyptal?
1 Terylene
2 Nylon
3 Glyptal
4 Chloroprene
Explanation:
Conceptual Questions
CHXII15:POLYMERS
325093
X= Number of amide linkages in the monomer of nylon - 6 Y= Number of double bonds in the monomer of neopreneThe value of\(\frac{{\text{x}}}{{\text{y}}}\) is
1 1
2 2
3 \(\dfrac{1}{2}\)
4 \(\dfrac{1}{3}\)
Explanation:
\({\rm{x = 1,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y = 2}}\) (chloroprene is monomer of neoprene) \(\frac{{\text{x}}}{{\text{y}}}{\text{ = }}\frac{{\text{1}}}{{\text{2}}}\)
CHXII15:POLYMERS
325094
Which is correct about Rayon?
1 Natural silk
2 Synthetic plastic
3 Artificial silk
4 Natural plastic or rubber
Explanation:
Rayon is semisynthetic fibre which consists of purified cellulose in the form of long threads.
325091
Thermosetting plastics once set cannot be remoulded and reshaped because of the presence of ____ between the polymeric chains.
1 weak van der Waals' forces
2 strong covalent forces
3 ionic bonds
4 hydrogen bonding
Explanation:
There is extensive cross-linking (strong covalent forces) between different polymer chains in thermosetting polymers or plastics.
CHXII15:POLYMERS
325092
Which of the following is used in glyptal?
1 Terylene
2 Nylon
3 Glyptal
4 Chloroprene
Explanation:
Conceptual Questions
CHXII15:POLYMERS
325093
X= Number of amide linkages in the monomer of nylon - 6 Y= Number of double bonds in the monomer of neopreneThe value of\(\frac{{\text{x}}}{{\text{y}}}\) is
1 1
2 2
3 \(\dfrac{1}{2}\)
4 \(\dfrac{1}{3}\)
Explanation:
\({\rm{x = 1,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,{\rm{y = 2}}\) (chloroprene is monomer of neoprene) \(\frac{{\text{x}}}{{\text{y}}}{\text{ = }}\frac{{\text{1}}}{{\text{2}}}\)
CHXII15:POLYMERS
325094
Which is correct about Rayon?
1 Natural silk
2 Synthetic plastic
3 Artificial silk
4 Natural plastic or rubber
Explanation:
Rayon is semisynthetic fibre which consists of purified cellulose in the form of long threads.
