Science General · Chemistry

Materials and Their Applications

2,856 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 social science waste generation and management origin of waste products e-wastes waste generation waste and its types

The material generally used for sound proofing of rooms like a recording studio and auditorium, etc. is

  1. cotton

  2. coir

  3. wood

  4. styrofoam.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The material by and large utilized for sound sealing of rooms like chronicle studio, film lobby, assembly hall which assimilate sound and encourage in sealing is styrofoam. Earplugs are comprised of fine glass wool or cottonwood impregnated with wax while ear covers contain liquid seals or plastic froth for engrossing sound.

So, the correct option is 'styrofoam.'.

Multiple choice physics current electricity and magnetism electric bell the magnetic effect of a current electromagnetic forces oersted experiment oersted's experiment magnetic field due to a straight current carrying conductor

What material is used for making the armature of an electric bell ? Give a reason for using this material.

  1. Soft Iron

  2. Carbon

  3. Glass

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

Soft iron is used for making the armature of an electric bell because soft iron is magnetised easily on passing the current and completely demagnetised easily on withdrawing the current through the solenoid.

Multiple choice physics heat engine: second law of thermodynamics conversion of heat into work: heat engine and it's efficiency engines and cycles heat engines refrigerators and heat pumps

The earthen pots prepared by using clay only are generally

  1. Porous

  2. Non-porous

  3. Conductors of electricity

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

The earthen pots prepared by using clay only are generally porous to facilitate cooling process.This works through evaporative cooling. Capillary action causes water to seep and evaporate from the mini-pores in the pot, taking the heat from the water inside, thus making the water inside cooler than the outside temperature.

Multiple choice biology food and health adulteration of food food adulteration food and human health

Sand, grit, iron filings and chalk powder are the common adulterants of

  1. Soji

  2. Coffee powder

  3. Common salts

  4. Wheat flour
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Adulteration is a process of mixing undesirable and inferior materials in food. The material or substance which is added to food is called as adulterants. Adulterated food is impure, unsafe, or unwholesome food. In soji, sand, grit, iron filings, chalk powder are added as an adulterant.
Thus, the correct answer is option A.
Multiple choice physics friction increasing and reducing friction advantages and disadvantages of friction merits and demerits of friction and methods to reduce it

Powder is used in carrom board for

  1. Increasing friction

  2. Decreasing friction

  3. Decoration

  4. Fragrance
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Answer is B.

The surface well powdered to stay away from harm to board surface due to scratch.It reduces the friction and helps in smoothing of the board and thereby allows the carom coins to go through in that flow which helps in fast play.
Powder is used in carom board for decreasing friction.

Multiple choice physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

What is the frictional order of the following materials on rubbing:

ebonite, glass rod, wool, plastic

  1. Wool, glass rod, ebonite, plastic

  2. Glass rod, wool, plastic, ebonite

  3. Wool, glass rod, plastic, ebonite

  4. Glass rod, wool, ebonite, plastic
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When any of these materials are rubbed together, the one in higher order gets positive charge (+) and the one in the lower order gets negative charge (-). The correct frictional order is: glass, wool, ebonite and plastic.

Multiple choice physics sources of energy biomass and biogas biogas conventional sources of energy

Biogas plant is generally made of what?

  1. Bricks

  2. Wood

  3. Tiles

  4. Plaster of Paris
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Temperature inside the biogas increases tremendously during the anaerobic fermentation process. Out of the given options, brick is the suitable material to be used for the making of the biogas plants to withstand high temperatures.

Multiple choice physics properties of material substances elastic behaviour of solids elastic and plastic substances properties of substances

Which of the following is perfectly plastic?

  1. Plasticine

  2. Quartz fibre

  3. steel

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

A perfectly plastic body is one that undergoes permanent deformation under stress and does not recover its original shape when the deforming force is removed. Plasticine is a non-drying clay that exhibits near-perfect plasticity.

Multiple choice chemistry substances in the surroundings - their states and properties elastic behaviour of solids elastic and plastic substances properties of substances

Which one of the following substance possesses the highest elasticity?

  1. rubber

  2. glass

  3. steel

  4. copper
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Modulus of elasticity gives the idea of elasticity. For above materials, values of E are:
Glass: $50-90 GPa$
Rubber:$ 0.01-0.1 GPa$
Steel:$ 200 GPa$
Copper: $117 GPa$