Given below are two statements:
Statement I : Ethene at 333 to 343 K and 6-7 atm pressure in the presence of AIEt3 and TiCl4 undergoes addition polymerization to give LDP.
Statement II: Caprolactam at 533-543 K in H2O through step growth polymerizes to give Nylon 6.
In the light of the above statements, choose the correct answer from the options given below:
Statement I : Ethene at 333 to 343 K and 6-7 atm pressure in the presence of AIEt3 and TiCl4 undergoes addition polymerization to give LDP.
Statement II: Caprolactam at 533-543 K in H2O through step growth polymerizes to give Nylon 6.
In the light of the above statements, choose the correct answer from the options given below:
- Both Statement t and Statement II are false
- Statement I is true but Statement II is false
- Both Statement I and Statement II are true
- Statement I is false but Statement II is true
The Correct Option is D
Solution and Explanation
Statement I:
Ethene at 333–343 K and 6–7 atm pressure in the presence of \( \text{AlEt}_3 \) and \( \text{TiCl}_4 \) undergoes addition polymerization to give high-density polyethylene (HDPE), not low-density polyethylene (LDPE).
- HDPE is produced using Ziegler-Natta catalysts (\( \text{AlEt}_3 \) and \( \text{TiCl}_4 \)) under moderate temperatures and pressures.
- LDPE, on the other hand, is produced via free radical polymerization at much higher temperatures (423–573 K) and very high pressures (1000–2000 atm).
- Thus, Statement I is false.
Statement II:
Caprolactam undergoes ring-opening polymerization in the presence of water at high temperatures (533–543 K) to form Nylon 6. This is an example of step-growth polymerization.
The reaction can be represented as
Thus, Statement II is true.
Final Answer:
Statement I is false, but Statement II is true.
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Polymers Questions
Match List I with List II :
List-I Polymer List-II used for items A Nylon 6,6 I Buckets B Low density polythene II Non-stick utensils C High density polythene III Bristles of brushes D Teflon IV Toys - Polymer which is named as orlon is:
- Caprolactam when heated at high temperature in presence of water, gives
- Poly-$\beta$-hydroxybutyrate-co-$\beta$ hydroxyvalerate (PHBV) is a copolymer of___.
- Match List I with List II
List I (polymer) List-II (Nature) A. 
I. Thermosetting polymerB. 
II. FibersC. 
III. ElastomerD. 
IV. Thermoplastic polymer Choose the correct answer from the options given below:
Top JEE Main Questions
- In a hydrogen like atom, when an electron jumps from the $M$ - shell to the $L$ - shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from $N$-shell to the $L$-shell, the wavelength of emitted radiation will be :
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.