Synthetic Fibres and Plastics Test

Result

Synthetic Fibres and Plastics Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is not a characteristic of plastics?

A
Plastics are poor conductors of heat.

B
Plastics are insoluble in water.

C
Plastics are non-inflammable.

D
Plastics do not react with water and air.

Solution

Plastics are inflammable i.e., they burn easily.
Question 2
1 / -0

Fill in the blanks by picking up the correct words.

Fibres are materials which are usually thin and have thread-like structure. They are generally classified as ___P___ and ___Q___, on the basis of their origin. Natural fibres may be plant fibres like ___R___ or animal fibres like ___S___.

A

P Q R S

Monomers Polymers Silk Jute

B

P Q R S

Natural Synthetic Cotton Silk

C

P Q R S

Polymers Natural Wool Jute

D

P Q R S

Natural Monomers Jute Wool

Question 3

1 / -0

Sneha has classified a few materials as shown in the table.

S. No.	Material	Type/Nature
1.	Nylon	Synthetic and non-biodegradable
2.	Jute	Natural and non-biodegradable
3.	Coir	Synthetic and biodegradable
4.	Wool	Natural and biodegradable
5.	Acrylic	Blended and biodegradable
6.	Polyester	Synthetic and non-biodegradable

The materials which are classified incorrectly are

1, 3 and 4 only

2, 4 and 5 only

2, 3 and 5 only

1, 3 and 6 only.

Solution

Jute is a natural and biodegradable fibre. Acrylic is a synthetic and non-biodegradable fibre. It is not a blended fibre. Coir is a natural and biodegradable fibre.

Question 4
1 / -0

A few polymers are grouped together on the basis of some common property as follows:

Group I: Rayon, acrylic, nylon, jute

Group II: PVC, melamine, teflon

Group III: Polycot, terrywool, acrylic Choose the odd one out in group I, II and III

A

I II III

Rayon Teflon Terrywool

B

I II III

Nylon Teflon Acrylic

C

I II III

Jute Melamine Terrywool

D

I II III

Jute Melamine Acrylic

Solution

Group I: Jute is a natural fibre while others are synthetic. Group II: Melamine is a thermosetting polymer while others are thermoplastics. Group III: Acrylic is not a blended fibre.
Question 5
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Which of the following applications of plastics show(s) that plastics are bad conductors of electricity?

I. Refrigerators have an insulating wool of plastics.
II. Electric wires have a plastic coating.
III. Chemicals are stored in plastic containers.
IV. Parachutes are made from plastics.

A
II, III and IV only

B
III and IV only

C
I only

D
II only
Question 6
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Read the given passage and fill in the blanks by choosing an appropriate option.

Cellulose is a naturally occurring fibre. The walls of ___i___ are made of cellulose. It is used in making a synthetic fibre ___ii___ which resembles the most expensive natural fibre ___iii___ in appearance hence, it is also called ___iv___ .

A

(i) (ii) (iii) (iv)

Animal cell   Cotton Nylon Animal fibre

B

(i) (ii) (iii) (iv)

Plant cell      Rayon    Silk Artificial silk

C

(i) (ii) (iii) (iv)

Plant cell   Acrylic Wool Artificial wool

D

(i) (ii) (iii) (iv)

Animal cell   Silk     Rayon Synthetic wool
Question 7
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Read the following statements carefully.

P. I am extensively used in the healthcare industry but my one disadvantage is that I am non-biodegradable.

Q. I am very familiar form of polyester and used for making bottles, utensils, films, wires, etc.

R. I am artificial silk and mixed with wool to make carpets. P, Q and R are respectively

A
PET, Rayon and Plastic

B
Rayon, Plastic and PET

C
Plastic, Rayon and PET

D
Plastic, PET and Rayon.

Question 8

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Match column I with column II and choose the correct option from the codes given below.

Column I	Column II
P. Nylon	(i) Burns quickly with a smell of burning paper
Q. Wool	(ii) Burns with sooty flame, fabric shrinks and black beads are formed
R. Acrylic	(iii) Shrinks after exposure to flame, forms hard beads and gives a smell of burning hair
S. Rayon	(iv) Burns slowly with a smell of burning hair

P - (i), Q - (iv), R - (ii), S - (iii)

P - (iii), Q - (iv), R - (ii), S - (i)

P - (iv), Q - (iii), R - (i), S - (ii)

P - (ii), Q - (iv), R - (iii), S - (i)

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Re-Attempt Weekly Quiz Competition

P	Q	R	S
Monomers	Polymers	Silk	Jute

P	Q	R	S
Natural	Synthetic	Cotton	Silk

I	II	III
Rayon	Teflon	Terrywool

I	II	III
Nylon	Teflon	Acrylic

Synthetic Fibres and Plastics Test - 3

Result

Synthetic Fibres and Plastics Test - 3

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Question 1

Plastics are poor conductors of heat.

Plastics are insoluble in water.

Plastics are non-inflammable.

Plastics do not react with water and air.

Solution

Question 2

P Q R S Monomers Polymers Silk Jute

P Q R S Natural Synthetic Cotton Silk

P Q R S Polymers Natural Wool Jute

P Q R S Natural Monomers Jute Wool

Question 3

1, 3 and 4 only

2, 4 and 5 only

2, 3 and 5 only

1, 3 and 6 only.

Solution

Question 4

I II III Rayon Teflon Terrywool

I II III Nylon Teflon Acrylic

I II III Jute Melamine Terrywool

I II III Jute Melamine Acrylic

Solution

Question 5

II, III and IV only

III and IV only

I only

II only

Question 6

(i) (ii) (iii) (iv) Animal cell Cotton Nylon Animal fibre

(i) (ii) (iii) (iv) Plant cell Rayon Silk Artificial silk

(i) (ii) (iii) (iv) Plant cell Acrylic Wool Artificial wool

(i) (ii) (iii) (iv) Animal cell Silk Rayon Synthetic wool

Question 7

PET, Rayon and Plastic

Rayon, Plastic and PET

Plastic, Rayon and PET

Plastic, PET and Rayon.

Question 8

P - (i), Q - (iv), R - (ii), S - (iii)

P - (iii), Q - (iv), R - (ii), S - (i)

P - (iv), Q - (iii), R - (i), S - (ii)

P - (ii), Q - (iv), R - (iii), S - (i)

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P Q R S

Monomers Polymers Silk Jute

P Q R S

Natural Synthetic Cotton Silk

P Q R S

Polymers Natural Wool Jute

P Q R S

Natural Monomers Jute Wool

I II III

Rayon Teflon Terrywool

I II III

Nylon Teflon Acrylic

I II III

Jute Melamine Terrywool

I II III

Jute Melamine Acrylic

(i) (ii) (iii) (iv)

Animal cell Cotton Nylon Animal fibre

(i) (ii) (iii) (iv)

Plant cell Rayon Silk Artificial silk

(i) (ii) (iii) (iv)

Plant cell Acrylic Wool Artificial wool

(i) (ii) (iii) (iv)

Animal cell Silk Rayon Synthetic wool