Which of the following statements is not true about low density polythene?a)Toughb)Hardc)Poor conductor of electricityd)Highly branched structureCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Low density polythene : It is obtained by the polymerisation of ethene under high presure of 1000-2000 atm. at a temp. of 350 K to 570 K in the pressure of traces of dioxygen or a peroxide initiator (cont). Low density polythene is chemically inert and poor conductor of electricity. It is used for manufacture squeeze bottles. toys and flexible pipes.

Answer

Ncert says that low density polythene is poor conductor of electricity ref to pg no-430 class 12 ncert

Answer

Low density polyethylene (LDPE) is a type of polymer that is widely used in various applications due to its unique properties. It is important to understand the characteristics of LDPE to determine which statement is not true about it.

Tough:
- LDPE is known for its toughness and flexibility.
- It can withstand impact and resist tearing, making it suitable for applications that require durability.

Hard:
- LDPE is not a hard material.
- It has a relatively low density and is soft compared to other types of polyethylene.
- LDPE can be easily deformed and molded into various shapes.

Poor conductor of electricity:
- This statement is true.
- LDPE is an insulating material and does not conduct electricity.
- It is often used as an electrical insulator in cables and wires.

Highly branched structure:
- This statement is true.
- LDPE is characterized by a highly branched structure.
- The branching in the polymer chains reduces the crystallinity of the material and gives it its unique properties such as flexibility and toughness.

From the given options, option C is not true about LDPE. LDPE is actually a poor conductor of electricity, which means it does not allow the flow of electric current through it. This property makes it suitable for electrical insulation applications.

In summary, LDPE is tough, not hard, a poor conductor of electricity, and has a highly branched structure. Therefore, option C is the statement that is not true about low density polyethylene.

Similar Class 12 Doubts

Which of the following statements is not true about low density polythene? A: Tough B: Hard C: Poor conductor of electricity D: Highly branched structure?

Which of the following possess anisotropic nature within their structure?

Statement-1 : Conductivity of a metallic conductor decreases with increase in temperature.Statement-2 : On increasing temperature the number of free electrons in the metallic conductar decreases.

Read the following statements carefully and choose the correct alternative from the following: Statement 1: Bank money is a legal tender money. Statement 2: Bank money is repayable by the banks on demand. Alternatives: (

An arbitrarily shaped conductor encloses a charge q and is surrounded by a conducting hollow sphere as shown in the figure. Four different regions of space 1,2,3 and 4 are indicated in the q figure. Which one of the following statements is correct?

Top Courses for Class 12

Suggested Free Tests

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams