Explore topic-wise MCQs in Applied Chemistry.

This section includes 47 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Plastics which when moulded once, cannot be softened by heating. Such plastics are called____

A. Polythene
B. Thermoplastics
C. Polyster
D. Thermosetting plastics
Answer» C. Polyster
Discussion
2.

The 4 R Principle is

A. Reduce, Reuse, Recycle, Recover
B. Remember, reduce, Recycle, Rejoice
C. Repeat, Rejoice, recycle, reduce
D. None of the above
Answer» B. Remember, reduce, Recycle, Rejoice
Discussion
3.

Polycot is made by mixing two types of fibres namely

A. Silk + Cotton
B. Polythene + cotton
C. Silk + Polyester
D. Polyester + Cotton
Answer» E.
Discussion
4.

A chain of small chemical units combined to form a large single unit is called ____

A. Polymer
B. Poly
C. Polythene
D. None of the above
Answer» B. Poly
Discussion
5.

Polythene and PVC are examples of

A. Bio degradable substance
B. Thermosetting plastics
C. Thermoplastics
D. Rayon
Answer» D. Rayon
Discussion
6.

The coating on modern non- stick cookware and electric iron is of

A. Terrycot
B. Rayon
C. Polyester
D. Teflon
Answer» E.
Discussion
7.

Bakelite and Melamine are examples of

A. Thermosetting plastics
B. Silk
C. Nylon
D. Rayon
Answer» B. Silk
Discussion
8.

Which of the following is Non-biodegradable

A. Woolen clothes
B. Plastic bag,
C. Cotton cloth
D. Wood
Answer» C. Cotton cloth
Discussion
9.

_____________ is an example of natural polymer

A. Rayon
B. Cellulose
C. Nylon
D. All of the above
Answer» C. Nylon
Discussion
10.

Fire proof plastic uniform worn by fire fighters has a coating of _____ to make it fireresistant.

A. Nylon
B. Rayon
C. Melamine plastic
D. Silk
Answer» D. Silk
Discussion
11.

The thermo plastics resins are usually soluble in _________

A. Organic solvents
B. Only in some organic solvents
C. Polar solvents
D. Only in water
Answer» B. Only in some organic solvents
Discussion
12.

Thermo setting resins are __________

A. Soft
B. Hard
C. Weak
D. Less brittle
Answer» C. Weak
Discussion
13.

The thermo setting resins have three dimensional network structures.

A. True
B. False
Answer» B. False
Discussion
14.

Thermo setting plastics are formed by _________

A. Step polymerisation
B. Suspension polymerisation
C. Emulsion polymerisation
D. Co-ordination polymerisation
Answer» B. Suspension polymerisation
Discussion
15.

The heating and cooling of the thermo plastics _________the chemical nature.

A. Alters
B. Do not alters
C. Alters slightly
D. May be alters
Answer» C. Alters slightly
Discussion
16.

The plastics are _________

A. Semi conductors
B. Conductors
C. Conducts at above room temperature only
D. Insulators
Answer» E.
Discussion
17.

The fabrication cost is __________ for plastics.

A. High
B. Low
C. Moderate
D. Very high
Answer» C. Moderate
Discussion
18.

Which of the following is not a property of plastics?

A. Plastics are not ductile
B. Plastics are organic in nature
C. Plastics have good electric insulation properties.
D. PVC plastics are inflammable
Answer» E.
Discussion
19.

Tributyl phosphate is an example of ___________

A. Hardener
B. Pigment
C. Plasticizer
D. Filler
Answer» D. Filler
Discussion
20.

Hexamethylene tetramine serves as a hardener for ________

A. Cellulose
B. Polystyrene
C. Polyvinylchloride
D. Phenol formaldehyde
Answer» E.
Discussion
21.

Homogeneous plastic is made of the chain containing only carbon atoms while heterogeneous plastic consists of the chain containing carbon and oxygen, nitrogen and other elements.

A. True
B. False
Answer» B. False
Discussion
22.

Melamine is derived from ________

A. Silicon carbide
B. Calcium silicate
C. Calcium carbide
D. Calcium sulphate
Answer» D. Calcium sulphate
Discussion
23.

Which of the following resins is obtained by the precipitation of milk with acids?

A. Vinyl
B. Casein
C. Cellulose
D. Alkyd
Answer» C. Cellulose
Discussion
24.

Which of the following statements about styrene is not true?

A. Styrene is light in weight
B. It has a low electrical resistance
C. Water absorption of styrene is low
D. Styrene is not easily attacked by chemicals
Answer» C. Water absorption of styrene is low
Discussion
25.

The components of alkyd are _______

A. Alcohol and phthalic acid
B. Glycol and formic acid
C. Glycerine and phthalic acid
D. Glycerine and formic acid
Answer» D. Glycerine and formic acid
Discussion
26.

Which of the following resins is also known as acrylic?

A. Methyl methacrylate
B. Alkyd
C. Styrene
D. Vinyl
Answer» B. Alkyd
Discussion
27.

Which of the following is a thermoplastic resin?

A. Casein
B. Phenol formaldehyde
C. Cellulose
D. Urea-formaldehyde
Answer» D. Urea-formaldehyde
Discussion
28.

Which of the following types of plastics have a high modulus of elasticity?

A. Rigid plastics
B. Semi-rigid plastics
C. Soft plastics
D. Elastomers
Answer» B. Semi-rigid plastics
Discussion
29.

Which of the following statements about thermosetting plastics is not true?

A. It is possible to change their shape on heating
B. They are durable and strong
C. They are available in a variety of colours
D. They become rigid on heating
Answer» B. They are durable and strong
Discussion
30.

In addition polymerization, the molecular weight of the resulting polymer is the same as the sum of the molecular weights of the reacting molecules.

A. True
B. False
Answer» B. False
Discussion
31.

Plastics are divided into thermoplastic and thermosetting on the basis of their ________

A. Behaviour with respect to heating
B. Structure
C. Physical properties
D. Mechanical properties
Answer» B. Structure
Discussion
32.

Which of the following polymers is obtained by condensation polymerization?

A. Polyethene
B. Polystyrene
C. Polyvinylchloride
D. Carbamide
Answer» E.
Discussion
33.

THERMO_SETTING_PLASTICS_ARE_FORMED_BY_________?$

A. Step polymerisation
B. Suspension polymerisation
C. Emulsion polymerisation
D. Co-ordination polymerisation
Answer» B. Suspension polymerisation
Discussion
34.

Thermo setting resins are __________$

A. Soft
B. Hard
C. Weak
D. Less brittle
Answer» C. Weak
Discussion
35.

The thermo setting resins have three dimensional network structures.

A. True
B. False
Answer» C.
Discussion
36.

In thermo plastic resins the force of attraction can be break easily by ____________

A. Heat
B. Pressure
C. Both heat and pressure
D. Neither heat nor pressure
Answer» D. Neither heat nor pressure
Discussion
37.

Which of the following is a thermo setting resins?

A. Polyethylene
B. Polyvinyl chloride
C. Polyvinyl cyanide
D. Bakelite
Answer» E.
Discussion
38.

The thermo plastics resins are usually soluble in _________

A. Organic solvents
B. Only in some organic solvents
C. Polar solvents
D. Only in water
Answer» B. Only in some organic solvents
Discussion
39.

The heating and cooling of the thermo plastics _________the chemical nature?

A. Alters
B. Do not alters
C. Alters slightly
D. May be alters
Answer» C. Alters slightly
Discussion
40.

Thermo plastics becomes ________ on heating.

A. Rigid
B. Moulded
C. Soft
D. Brittle
Answer» D. Brittle
Discussion
41.

How many types of plastic resins are there?

A. 2
B. 3
C. 4
D. 5
Answer» B. 3
Discussion
42.

Plastic resin is used in the paint industry as _________

A. Catalyst
B. Ion exchanger
C. Inhibitor
D. Coolant
Answer» C. Inhibitor
Discussion
43.

The plastics are _________

A. Semi conductors
B. Conductors
C. Conducts at above room temperature only
D. Insulators
Answer» E.
Discussion
44.

The abrasion resistance of the plastic is ____________

A. Low
B. Very low
C. High
D. Moderate
Answer» D. Moderate
Discussion
45.

The fabrication cost is __________ for plastics.

A. High
B. Low
C. Moderate
D. Very high
Answer» C. Moderate
Discussion
46.

Plastics are ________ in weight.

A. Very heavy
B. Light
C. Negligible
D. Heavy
Answer» C. Negligible
Discussion
47.

Plastics are the materials obtained by mixing the __________ with the other ingredients which impart special engineering properties.

A. Resin
B. Monomer
C. Catalyst
D. Any polymer
Answer» B. Monomer
Discussion