MCQ & Extra Questions: Materials Around Us | Science Class 6 PDF Download

Extra Questions

Q1: What is a material?

A material is any substance that is used to create an object, such as wood, metal, plastic, or glass.

Q2: In the context of materials, what does the term 'soluble in water' mean?

In the context of materials, 'soluble in water' means that a material can dissolve completely when mixed with water. This means the material disappears and forms a solution with the water, so you can no longer see the individual particles of the material. For example, when salt is added to water, it dissolves, making a saltwater solution.

Q3: Define the term 'lustrous.'

Lustrous refers to materials that have a shiny surface, like metals such as iron, copper, and gold.

Q4: What is the significance of classifying materials based on their properties?

Classifying materials based on their properties helps in understanding their uses, similarities, and differences, which makes it easier to study and utilize them effectively.

Q5: Name two materials that are commonly used for making transparent objects.

Glass and clear plastic

Q6: Why can’t a tumbler made of cloth be used to store water?

A tumbler made of cloth cannot be used to store water because cloth is not waterproof and will allow the water to seep through.

Q7: What is an opaque material? Provide an example.

An opaque material is one through which you cannot see at all. An example is wood.

Q9: What is the difference between transparent and translucent materials?

Transparent materials allow light to pass through them clearly, making objects behind them visible, while translucent materials allow some light to pass through, but objects are not seen clearly.

Q10: What happens when sugar is mixed with water?

When sugar is mixed with water, it dissolves completely, making the solution clear.

Multiple Choice Questions

Q1: Which of the following materials is non-lustrous?

a) Gold
b) Copper
c) Paper
d) Iron

Ans: c) Paper

Paper does not have a shiny surface, making it a non-lustrous material.

Q2: Which of the following materials can be compressed easily?

a) Stone
b) Rubber
c) Iron
d) Wood

Ans: b) Rubber

Rubber is a soft material and can be easily compressed compared to harder materials like stone or iron.

Q3: Which of these materials is soluble in water?

a) Sand
b) Salt
c) Chalk powder
d) Sawdust

Ans: b) Salt

Salt dissolves completely in water, making it soluble.

Q4: What type of material is butter paper?

a) Transparent
b) Opaque
c) Translucent
d) Lustrous

Ans: c) Translucent

Butter paper allows some light to pass through, but objects behind it cannot be seen clearly, making it translucent.

Q5: Which material is typically used to make objects like cooking utensils due to its ability to withstand high temperatures?

a) Plastic
b) Paper
c) Metal
d) Cloth

Ans: c) Metal

Metals like steel are used for cooking utensils as they can withstand high temperatures without melting or burning.

Q6: Which of the following objects would be best categorized as opaque?

a) Clear glass
b) Frosted glass
c) A wooden door
d) Air

Ans: c) A wooden door

A wooden door is an opaque object, meaning you cannot see through it.

Q7: What happens when you mix sand with water?

a) The sand dissolves
b) The sand remains suspended
c) The sand forms a separate layer
d) The sand evaporates

Ans: c) The sand forms a separate layer

Sand does not dissolve in water and instead forms a separate layer at the bottom of the container.

Q9: What is the SI unit of mass?

a) Gram
b) Kilogram
c) Milligram
d) Litre

Ans: b) Kilogram

The SI unit of mass is the kilogram (kg).

Q10: Which property describes materials that are difficult to compress?

a) Softness
b) Hardness
c) Lustre
d) Transparency

Ans: b) Hardness

Hardness is a property that indicates how resistant a material is to deformation, scratching, or compression. Materials that are difficult to compress are considered hard because they resist changes in their shape under pressure. For example, metals and rocks are hard materials that do not compress easily compared to softer materials like rubber or foam.