15. POLYMERS
POLYMERS

19431 Which is not a polymer

1 Sucrose
2 Enzyme
3 Starch
4 Teflon
POLYMERS

19432 Which of the following is a syndiotactic polymer in \({\rlap{-} [C{H_2} - C(YZ)\,\rlap{-} ]_n}\)

1 All \(Y\) groups lie on one side of the chain and all \(Z\) groups on the other side
2 The \(Y\) and \(Z\) groups lie alternately on each side of the chain
3 The \(Y\) and \(Z\) groups are arranged in a random fashion
4 \(Y\) and \(Z\) groups are same
POLYMERS

19433 Polymers of the type \(Z -Mn -Y\), \(i.e.\) those which contain a foreign molecule in addition to the recurring unit are known as

1 Semisynthetic polymers
2 Atactic polymers
3 Telomers
4 Plasticiser
POLYMERS

19434 In the natural rubber ‘Caoutchouc’, the isoprene units are joined by

1 Head-to-head
2 Tail-to-tail
3 Head-to-tail
4 All of these
POLYMERS

19431 Which is not a polymer

1 Sucrose
2 Enzyme
3 Starch
4 Teflon
POLYMERS

19432 Which of the following is a syndiotactic polymer in \({\rlap{-} [C{H_2} - C(YZ)\,\rlap{-} ]_n}\)

1 All \(Y\) groups lie on one side of the chain and all \(Z\) groups on the other side
2 The \(Y\) and \(Z\) groups lie alternately on each side of the chain
3 The \(Y\) and \(Z\) groups are arranged in a random fashion
4 \(Y\) and \(Z\) groups are same
POLYMERS

19433 Polymers of the type \(Z -Mn -Y\), \(i.e.\) those which contain a foreign molecule in addition to the recurring unit are known as

1 Semisynthetic polymers
2 Atactic polymers
3 Telomers
4 Plasticiser
POLYMERS

19434 In the natural rubber ‘Caoutchouc’, the isoprene units are joined by

1 Head-to-head
2 Tail-to-tail
3 Head-to-tail
4 All of these
POLYMERS

19431 Which is not a polymer

1 Sucrose
2 Enzyme
3 Starch
4 Teflon
POLYMERS

19432 Which of the following is a syndiotactic polymer in \({\rlap{-} [C{H_2} - C(YZ)\,\rlap{-} ]_n}\)

1 All \(Y\) groups lie on one side of the chain and all \(Z\) groups on the other side
2 The \(Y\) and \(Z\) groups lie alternately on each side of the chain
3 The \(Y\) and \(Z\) groups are arranged in a random fashion
4 \(Y\) and \(Z\) groups are same
POLYMERS

19433 Polymers of the type \(Z -Mn -Y\), \(i.e.\) those which contain a foreign molecule in addition to the recurring unit are known as

1 Semisynthetic polymers
2 Atactic polymers
3 Telomers
4 Plasticiser
POLYMERS

19434 In the natural rubber ‘Caoutchouc’, the isoprene units are joined by

1 Head-to-head
2 Tail-to-tail
3 Head-to-tail
4 All of these
POLYMERS

19431 Which is not a polymer

1 Sucrose
2 Enzyme
3 Starch
4 Teflon
POLYMERS

19432 Which of the following is a syndiotactic polymer in \({\rlap{-} [C{H_2} - C(YZ)\,\rlap{-} ]_n}\)

1 All \(Y\) groups lie on one side of the chain and all \(Z\) groups on the other side
2 The \(Y\) and \(Z\) groups lie alternately on each side of the chain
3 The \(Y\) and \(Z\) groups are arranged in a random fashion
4 \(Y\) and \(Z\) groups are same
POLYMERS

19433 Polymers of the type \(Z -Mn -Y\), \(i.e.\) those which contain a foreign molecule in addition to the recurring unit are known as

1 Semisynthetic polymers
2 Atactic polymers
3 Telomers
4 Plasticiser
POLYMERS

19434 In the natural rubber ‘Caoutchouc’, the isoprene units are joined by

1 Head-to-head
2 Tail-to-tail
3 Head-to-tail
4 All of these