C-06 — Polymer

The word 'polymer' comes from which language?

What does the Greek word 'poly' mean?

What does the Greek word 'meros' mean?

Which of the following best defines a polymer?

The small molecules that make up a polymer are called—

Polythene is a polymer of which monomer?

PVC pipe is the polymer of which monomer?

Bakelite is formed from which monomers?

Synthetic electric switch boards are made of—

Household melamine items are polymers of—

Which of the following is a natural polymer?

Which of the following is a synthetic polymer?

Which of the following is NOT a natural polymer?

Consider the following:

The process by which many monomers join together to form a polymer is called—

Polymerization usually requires—

When two monomers join together, the resulting substance is called—

When three monomers join together, the resulting compound is called—

At what temperature is ethylene heated to produce polythene?

The pressure required for polythene production is—

Which gas is used as a catalyst in the manufacture of polythene from ethylene?

Polythene can be made at atmospheric pressure by using which catalyst?

In the polythene formula $\ce{(-CH2-CH2-)_n}$, the value of n is—

Cloth is produced from—

Fibers and filaments are—

According to source, fibers are classified into how many types?

Which of the following is a natural fiber?

Which of the following is a man-made fiber?

Which is a plant fiber?

Which of the following is an animal fiber?

Artificial fibers are classified into—

Which is a cellulosic fiber?

Which is a non-cellulosic artificial fiber?

Cellulose is a fibrous material found in—

Besides yarn and textile, fibers are also used in—

Why do cotton clothes feel comfortable in hot weather?

The main plant fiber is—

Under a microscope, cotton fiber appears like—

The narrow inner space of cotton fiber is called—

How many natural twists per inch are present in a fine, long cotton fiber?

Cotton fibers have strong affinity for—

Cotton fibers are damaged by—

One of the main limitations of cotton fiber is that it—

Silk is collected from—

Silk is mainly composed of which protein?

How many different colours of silk are available?

Silk is termed as the—

Among the animal fibers, the strongest and longest is—

Long-time exposure to which factor damages silk quickly?

Wool is widely used in winter because—

Wool consists of a protein named—

About how many species of sheep produce wool?

About how many types of wool are produced from different sheep?

Fleece wool is collected from—

Pulled wool is collected from—

Mohair wool is obtained from—

Wool is inert to—

Wool can be attacked by—

The principal non-cellulosic synthetic fiber is—

Nylon is produced by polymerization of—

Nylon is basically of how many types?

When wet, the elasticity of nylon—

On heating, nylon—

Nylon is commonly used for making—

The first and main synthetic fiber is—

Rayon is made from—

Which of the following is NOT a type of rayon?

Rayon on heating—

Consider the following statements about silk:

The process of separating seeds from cotton is known as—

The fiber obtained from ginning is called—

Cotton lints bundled together to form—

Jute fiber is collected from—

After cutting jute plants, they are piled together for leaf removal for about—

The piled jute plants are locally called—

Jute plants are kept submerged in water for rotting for how many days?

Why is rotting required for jute?

Spinning is carried out in—

The bale of fibers carried to the spinning mill is first opened in—

The process of preparing the cotton mixture is known as—

In case of jute fibers, the mixing process is called—

Carding and combing is applicable to—

The special combing technique used for linen fiber is known as—

The thin layer of fiber obtained after carding and combing is called—

Spinning is basically nothing but—

Stretching of sliver during yarn production is called—

The strength of yarn depends on—

Which fiber requires relatively more twisting?

The device used to perform twisting is called—

The first step of silk manufacturing is—

The matured cocoon is boiled in—

For fine and thin silk yarn, how many cocoon filaments are taken together?

For coarse silk yarn, how many cocoon filaments are stretched?

The device used in silk spinning is—

In manufacturing yarn from artificial fibers, the concentrated viscous solution is called—

The small hole through which spinning solution is passed to form filament is called—

When cotton yarn is burned, it produces a smell like—

When nylon is burnt, it—

An eraser is made of—

Natural rubber is a—

Rubber is insoluble in—

Rubber is soluble in—

The usual colour of rubber is—

Which property describes rubber's behaviour on stretching?

Pure rubber—

Unlike most substances, rubber on heating—

Rubber is widely used for surface coating because it is—

Rubber degrades over time mainly because of reaction with—

Consider the following statements about rubber:

The word 'plastic' means—

Plastic is widely used as an insulator because—

Which of the following is a thermoplastic?

Which of the following is a thermosetting plastic?

Thermosetting plastics can be moulded—

The coating on the handle of a fry pan is usually made of—

Most plastics are chemically inert to—

Some plastics dissolve in—

Plastics are generally—

Biodegradable plastics are used for—

PVC on burning produces—

Polyurethane on burning releases the toxic gases—

Consider the following about plastic:

Majority of plastics and synthetic rubbers are—

Accumulation of waste plastic and rubber in city sewerage lines causes—

If plastic and rubber waste enters river or lakes, it reduces—

Accumulated plastic from animal flesh and fish entering human body may cause—

The best way to protect environment from plastic and rubber pollution is to—

What type of fiber requires heckling?

The characteristics of the fiber shown on the right figure is—

From the diagram (1000-1200 atmospheric pressure, $\ce{O2}$ catalyst, n(Ethylene) →), what will be produced in Fig. B?

Which of the following fibers is similar to the product in Fig. B (polythene)?

What are non-cellulosic fibers?

Why is linen called a natural fiber?

On a cold January morning, wearing two cotton shirts does not keep one warm. Which type of clothing is more suitable for cold weather?

Why does the same type of cotton clothing give different feelings in summer and winter?

Mr. Milon has a PVC pipe manufacturing industry. Emon's raw material is elastic and reactive to oxygen and moisture; Mamun's material can be moulded in molten state but is chemically inert. Whose material is more suitable for Mr. Milon's factory?

Why does rubber degrade or deteriorate over time?

Both Emon's (rubber) and Mamun's (plastic) materials affect environmental balance because—

What type of polymer is polythene?

Why is PVC pipe called a thermoplastic?

What is meant by natural polymer?

Why is proper management of plastic materials necessary to maintain environmental balance?

What makes cotton clothes long lasting?