Which of the following are translucent material ?
- ✓ground glass and clouds
- Bground glass and aluminium sheet
- Cair and clouds
- Dground glass and air.
Answer: A.
View full solution →Question types
Materials Around Us question types
101 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
101
Questions
8
Question groups
5
Question types
01
[1 Marks Each] M.C.Q.
15 Q→02Assertion (A) & Reason (B) MCQ
10 Q→03[1 Marks Each] Blanks
17 Q→04True Or False.[1 Marks Each]
24 Q→05[1 Marks Each] QUE - ANS
25 Q→06[3 Marks Each] QUE-ANS
6 Q→07Answer The Following Questions In Short.[2 Marks Each]
3 Q→08Match the following.
1 Q→Sample Questions
Materials Around Us questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The object that does not give out light on its own is
- Alight bulb
- ✓shiningmirror
- Cstar
- Dlighted match stick
Answer: B.
View full solution →Which one of the following is a transparent material ?
- ATissue paper
- BButter paper
- COiled paper
- ✓Air
Answer: D.
View full solution →Which one of the following is lighter than water?
- ✓Ice
- BBones
- CStone
- DGlass
Answer: A.
View full solution →Which one of the following does not dissolve in water ?
- Awashing soda
- Bcommon salt
- ✓chalk powder
- Dsugar
Answer: C.
View full solution →Assertion (A) : Mustard oil is soluble in water.
Reason : Kerosene can mix with petrol to form a single layer.
Reason : Kerosene can mix with petrol to form a single layer.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- ✓A is false but R is true.
Answer: D.
View full solution →Assertion (A) : Materials that allow light to pass through partially are called translucent.
Reason: Air and certain types of plastics are translucent.
Reason: Air and certain types of plastics are translucent.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- ✓A is true but R is false.
- DA is false but R is true.
Answer: C.
View full solution →Assertion (A) : Anything that occupies space and has mass is called matter.
Reason : The space occupied by matter is its volume.
Reason : The space occupied by matter is its volume.
- ABoth A and R are true and R is the correct explanation of A.
- ✓Both A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Answer: B.
View full solution →Assertion (A) : Water plays an important role in the functioning of our body.
Reason : Water can dissolve a large number of materials.
Reason : Water can dissolve a large number of materials.
- ✓Both A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Answer: A.
View full solution →Assertion (A) : We classify the objects into groups.
Reason: The classification of objects into groups helps in understanding them.
Reason: The classification of objects into groups helps in understanding them.
- ✓Both A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Answer: A.
View full solution →The electric wires and cables are made from _______ .
Stone is _______ while chalk is _______ .
We cannot see through an _______ material.
Mustard oil and water are _______ liquids.
Hard materials such as glass _______ easily whereas metals do not _______.
An apple is a matter because it occupies no space and has mass.
Sugar dissolves in water whereas sawdust does not.
Aluminium foil has lustre while an eraser does not.
Wood is translucent while glass is opaque.
Glucose is insoluble in water
The containers which are used to store materials in shops and at home are usually transparent. Give your reasons for this.
Visit your kitchen and observe how your parents have organised various edibles. Can you suggest a better sorting method? Write it in your notebook.
Why does a piece of wood float on water?
Which is heavier, $1\ L$ of water or $1\ L$ of sand?
View full solution →Name a material which is transparent and is not visible.
You need to have containers for collection of
$(i)$ food waste,
$(ii)$ broken glass and
$(iii)$ wastepaper. Which materials will you choose for containers of these types of waste? What properties of materials do you need to think of?
View full solution →$(i)$ food waste,
$(ii)$ broken glass and
$(iii)$ wastepaper. Which materials will you choose for containers of these types of waste? What properties of materials do you need to think of?
Unscramble the letters $($Column $I)$ and match with their properties $($Column $II)$.
View full solution →| Column $I$ | Column $II$ |
| $(i)$ $TREMAT$ | $(a)$ Objects can be seen clearly through it |
| $(ii)$ $ULSBELO$ | $(b)$ Occupies space and has mass |
| $(iii)$ $TNERPASNART$ | $(c)$ Shiny surface |
| $(iv)$ $ERUSTL$ | $(d)$ Mixes completely in water |
Link the following words by putting arrows between words that have a connection:
Match the objects given below with ‘the materials from which they could be made.
| Object | Materials |
| Chair | Leather |
| Book | Plastic |
| Toy | Paper |
| Tumbler | Wood |
| Shoes | Glass |
Group the objects given below on the basis of hardness/ softness:
Earthen lamp, wooden scale, pencil, tennis ball, screw driver, wool, wax, eraser, sharpener, soap.
Earthen lamp, wooden scale, pencil, tennis ball, screw driver, wool, wax, eraser, sharpener, soap.
Imagine you have two mysterious materials, $X$ and $Y.$ When you try to press material $X$, it feels rigid and does not change its shape easily. On the other hand, material $Y$ easily changes its shape when you press it. Now, when you mi$X$ both materials in water, only material $X$ dissolves completely, while material $Y$ remains unchanged. What can materials $X$ and $Y$ be? Can you identify whether material $X$ is hard or soft? What about material $Y$? Justify your answer.
View full solution →Air is all around us but does not hinder us from seeing each other. Whereas, if a wooden door comes in between, we cannot see each other. It is because air is ___ and the wooden door is _____. Choose the most appropriate option:
$(i)$ transparent, opaque
$(ii)$ translucent, transparent
$(iii)$ opaque, translucent
$(iv)$ transparent, translucent
View full solution →$(i)$ transparent, opaque
$(ii)$ translucent, transparent
$(iii)$ opaque, translucent
$(iv)$ transparent, translucent
We see chairs made up of various materials, such as wood, iron, plastic, bamboo, cement and stones. Following are some desirable ‘ properties of materials which can be used to make chairs. Which materials used to make chairs fulfil these properties the most?
$(i)$ Hardness (does not bend or shake on sitting even after long use).
$(ii)$ Lightweight (easy to lift or to take from one place to another).
$(iii)$ Does not feel very cold when sitting during winters.
$(iv)$ Can be cleaned regularly and made to look new even after long use.
View full solution →$(i)$ Hardness (does not bend or shake on sitting even after long use).
$(ii)$ Lightweight (easy to lift or to take from one place to another).
$(iii)$ Does not feel very cold when sitting during winters.
$(iv)$ Can be cleaned regularly and made to look new even after long use.
| Column A | Column B |
| Q.1. Completely disappears in water | A. Translucent |
| Q.2. Air | B. Opaque |
| Q.3. Wood | C. Transparent |
| Q.4. Oiled paper | D. Soluble |
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