Synthetic Fibres and Plastics Test

Result

Synthetic Fibres and Plastics Test - 20

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

When ________ is burnt, it releases toxic gases into the air causing air pollution.

A
LPG

B
Plastic

C
CNG

D
None of them

Solution

The burning of plastic releases toxic gases like dioxins, furans, mercury, and polychlorinated biphenyls into the atmosphere. The burning of plastic also produces black carbon (soot) which contributes to air pollution.
CNG and LPG on complete combustion produce carbon dioxide, water vapor, and heat which are also a cause of climate change and global warming but these are not toxic in nature.
Hence, option $$B$$ is correct.
Question 2
1 / -0

It is advised to wear clothes in summer made of:

A
Silk

B
Wool

C
Nylon

D
Cotton

Solution

In summer, it is advised to wear clothes made of cotton. We sweat a lot in summers. Cotton is a good absorber of water. Thus, it absorbs sweat from our body and exposes the sweat to the atmosphere, making its evaporation faster.

Hence, option D is correct.
Question 3
1 / -0

Polywool is made by blending polyester and :

A
acrylic

B
rayon

C
cotton

D
wool

Solution

Polywool is a mixture of a synthetic fibre (polyester) and a natural fibre (wool). When polyester(synthetic fibre) is blended with wool(natural fibre) it forms Polywool. Mixture of polyester and wool. Polywool is a blended fibre formed by mixing fibres called polyester and wool.

Hence, the correct option is $$\text{D}$$
Question 4
1 / -0

Which material is responsible for the cause of animal death?

A
Plastic

B
Sand

C
Plants

D
None of the above

Solution

Most of the wandering animals eat plastic bags which take thousand of year to decompose and remain in the body of animals and become cause of death.
Question 5
1 / -0

Synthetic fibers having almost common property are:

A
nylon and polyester

B
nylon and plastics

C
polyester and plastics

D
all of the above

Solution

Synthetic fibers having common properties are nylon and polyester.
Nylon and polyester both are lightweight, durable synthetic fibers. They share some common properties like wrinkle resistance, easy-care, stretch resistance, and shrink resistance.
Option $$A$$ is correct.
Question 6
1 / -0

Which of the following is a thermosetting plastic?

A
PVC

B
Polyethylene

C
Bakelite

D
Terylene

Solution

A thermosetting plastic is a polymer that irreversibly becomes rigid when heated. Such material is also known as thermoset.

Bakelite is an example of thesmosetting plastic as it remains permanent solid state after being cured one time. It is initially liquid or soft Solid.

Option: $$C$$
Question 7
1 / -0

Rayon is different from synthetic fibres because :

A
it has a silk appearance

B
it is obtained from wood pulp

C
it can also be woven like those of natural fibres

D
it is natural

Solution

Rayon is manufactured regenerated cellulose fiber. It is made from purified cellulose from wood pulp which is converted into soluble compound which is chemically solidified to form synthetic fiber. Because rayon is manufactured from naturally occurring polymers, it is considered a semi-synthetic fiber.
Question 8
1 / -0

Which of the following is thermoresistant polymer ?

A
Orlon

B
Polythene

C
Teflon

D
Bakelite

Solution

Teflon is thermoresistant polymer.
It is also called polytetrafluoroethylene. It is chain growth homopolymer of tetrafluoroethylene $$(CF_2=CF_2)$$.

$$nCF_2=CF_2 \xrightarrow [Polymeriation]{\Delta} (-F_2C-CF_2-)_n$$
Question 9
1 / -0

Which of the following are incorrectly matched?

A
(i) & (ii)

B
(i), (ii) & (iii)

C
(i), (iii) & (iv)

D
All of these

Solution

(i) Thermoplastic is a plastic that can be bent or deformed on heating. It is obtained from an artificial source.
(ii) Jute is a plant fibre.
(iii) Cellulose is obtained from plants.
(iv) Polythene is obtained from an artificial source. It is produced from ethylene. It is a synthetic fiber.
Question 10
1 / -0

Read the following statement and mark the correct answer.

I. Artificially prepared synthetic fibre which resembles silk is known as terylene.
II. Rayon is not considered as a synthetic fibre as it is regenerated from cellulose.
III. PET bottles and jars are made up of polyesters.

A
Statement I is false, II and III are true

B
Statement I is true, II and III are false

C
Statement I and II are false, III is true

D
Statement II is true, I and II are false

Solution

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Synthetic Fibres and Plastics Test - 20

Result

Synthetic Fibres and Plastics Test - 20

Score

-

Rank

-

SHARING IS CARING

Question 1

LPG

Plastic

CNG

None of them

Solution

Question 2

Silk

Wool

Nylon

Cotton

Solution

Question 3

acrylic

rayon

cotton

wool

Solution

Question 4

Plastic

Sand

Plants

None of the above

Solution

Question 5

nylon and polyester

nylon and plastics

polyester and plastics

all of the above

Solution

Question 6

PVC

Polyethylene

Bakelite

Terylene

Solution

Question 7

it has a silk appearance

it is obtained from wood pulp

it can also be woven like those of natural fibres

it is natural

Solution

Question 8

Orlon

Polythene

Teflon

Bakelite

Solution

Question 9

(i) & (ii)

(i), (ii) & (iii)

(i), (iii) & (iv)

All of these

Solution

Question 10

Statement I is false, II and III are true

Statement I is true, II and III are false

Statement I and II are false, III is true

Statement II is true, I and II are false

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.