Science General · Chemistry

Materials and Their Applications

2,794 Questions

Materials and Their Applications questions examine the properties and uses of raw materials like ceramics, cement, clay, and glass. This topic is a core component of general science in SSC, railways, and technical exams. Review these questions to master the practical applications of various compounds.

Ceramic insulatorsCement raw materialsSculpting and pottery clayGlassblowing materialsSustainable construction materials

Materials and Their Applications Questions

Multiple choice chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

Plastics are mainly used by everyone because :

  1. They are cheap

  2. Easy to handle

  3. Do not break

  4. Light weight
Reveal answer Fill a bubble to check yourself
A,B,D Correct answer
Explanation

Plastics find many applications in day-to-day life because of various reasons as :


1) They are economical, thus are cheap.
2) Easy to handle unlike ceramics and glass which are brittle.
3) Light weight materials and easy to carry.
4) High durability but they are breakable.

Therefore option A, B and D are correct.

Multiple choice chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

Which material is used for making:
(i) Saucepan handles
(ii) Electric plugs/switches/plugboards

  1. Bakelite

  2. PVC

  3. Polythene

  4. Polyester
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(i) Saucspan handles are made of bakelite as it is a bad conductor of heat.
(ii) Bakelite is also a bad conductor of electricity so the electric plugs, switches, etc. are made of it.

Multiple choice chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

A person has to make electric switches and plugs. Which material is recommended ?

  1. Teflon

  2. Bakelite

  3. Rayon

  4. PVC
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Bakelite has high heat resistant property which makes it a poor conductor of heat and electricity.it is used for making electrical switches because it high heat resistance property protects us from electric shocks.
also it is used to make handles of cooking utensils because of this property it does not conduct heat and so the handles are prevented from becoming too hot and this makes it easy to handle the handles of cooking utensils.

Hence, the correct option is $\text{B}$
Multiple choice chemistry man made materials environmental impact: plastics plastic plastic plastic waste garbage in, garbage out

Garden chairs made of plastic strips and plastic articles get faded, worn out and cracked in sunlight, mainly because of:

  1. Low melting point of plastic

  2. Ultraviolet rays

  3. Heat

  4. The red colour
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Garden chairs made of plastic strips and plastic articles get faded, worn out and cracked in sunlight, mainly because of UV rays. All types of UV can cause a photochemical effect within the polymer which can lead to degradation of some sort to the materials. Absorbed UV energy can exits the photon in a plastic, exciting the photons can create free radicals. Those free radicals can cause breaks in the polymer bonds.

Multiple choice chemistry non-metals introduction to non-metals occurence of metals occurrence of metals and non metals

Which of the following is used for decorating sweets?

  1. Copper foil

  2. Aluminium foil

  3. Silver foil

  4. All of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Silver foil is used for decorating sweets called Vark,  or varak (also a silver leaf, German paper) is any leaf composed of pure metals, typically silver but sometimes gold, used on South Asian sweets. The silver is edible, though flavourless.


Hence, the correct option is $C$.

Multiple choice physics transfer of heat heat and heat transfer heat energy transfer heat energy transfers fundamentals of heat transfer conduction

Overhead cables are insulated from pylons through

  1. plastic.

  2. ceramics and glass.

  3. rubber.

  4. PVC.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Examples of ceramics are clay, bricks, tiles, glass, and cement.
Overhead cable is insulated from pylons through ceramics and glass.
The overhead power lines that are supported by pylons are not covered in insulating materials. However, ceramics or glass insulators are fitted between pylons and wires. This stops electricity flowing down the metal pylons to the ground, where it could hurt or even kill people or animals.
Multiple choice evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources) fuel and conservation

The materials which are finishing fastly are ________.

  1. non-renewable

  2. renewable

  3. both a and b

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Non-renewable resources such as coal, petroleum and natural gas are finishing fastly due to increase in population and industrialisation which results in increased demands of these resources. A non renewable resources is a resources of economic value that cannot be readily replaced by natural means on a level equal to its consumption.