Classification

Q.

Try and list as many uses of paper as you can.

Q.

A Person Who Sells Flowers

Q.

A person who sells flowers and plants is known as

Q.

Adjective And Adverb Form Of Beauty

Q.

What is the full form of pen drive? Write a note on a pen drive.

Q.

Clouds and Rain Are Non Living Things Why They Are Moving

Q. Name the six objects that are made from more than one material. (3 marks)

Q. Why thermocol is used in packing delicate items?

1. biodegradable
2. a good conductor of heat
3. carcinogenic
4. a good shock absorber

Q.

9. Give the name of two objects each which can be made from the following material is.

(a) Glass

Q. Why are overhead cables not insulated?

1. Both (B) and (C).
2. Because air is a bad conductor of electricity.
3. Because air is a good conductor of electricity.
4. Bare wires conduct electricity better.

Q.

Question 7 (c)

Find the odd one out from the following:
Aluminium, Iron, Copper, Silver, Sand

Q. State whether the statements given below are True or False.​
(a) Stone is transparent, while glass is opaque.​
(b) A notebook has lustre while eraser does not.
(c) Chalk dissolves in water.
(d) A piece of wood floats on water.
(e) Sugar does not dissolve in water.
(f) Oil mixes with water.​
(g) Sand settles down in water.
(h) Vinegar dissolves in water.

Q.

Mass is the amount of space an object takes up.

1. True
2. False

Q. Jute is used to make gunny bags and carpets.

1. True
2. False

Q.

How do we classify materials based on their hardness? Explain. [2 MARKS]

Q. Find the odd one out from the following:​
(i) Chair, Bed, Table, Baby, Cupboard​
(ii) Rose, Jasmine, Boat, Marigold, Lotus​
(iii) Aluminium, Iron, Copper, Silver, Sand​
(iv) Sugar, Salt, Sand, Copper sulphate​

Q.

Grouping of things on the basis of certain common characteristics is called ……………

Q.

Why do ywe need to group material?

Q. Pick the wrong statement.

1. A pane of glass is transparent.
2. Chalk does not dissolve in water.
3. A silver coin has no lustre.
4. Wood floats in water.

Q. What is sorting materials into groups ?

Q. Which method can be used to separate rice bran from flour?

1. Sieving
2. Threshing
3. Winnowing
4. Handpicking

Q.

Question 20

Match the objects given in Column I with the materials given in Column II.

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{(a)}& \text{Surgical instruments}& \text{(i)}& \text{Plastic}\\ \text{(b)}& \text{Newspaper}& (\text{ii)}& \text{Animal product}\\ \text{(c)}& \text{Electrical switches}& \text{(iii)}& \text{Steel}\\ \text{(d)}& \text{Wool}& \text{(iv)}& \text{Plant product}\end{array}$

Q.

The mercury used in thermometers has lustre.

1. True
2. False

Q. Mark the objects that are made from more than one material.

1. 
2. 
3. 

Q. Clinical thermometers are made of glass. Identify the characteristic(s) considered for the selection.
(i) It is a bad conductor of heat
(ii) It is transparent
(iii) It is strong

1. Only (i) and (ii)
2. Only (ii) and (iii)
3. (i), (ii) and (iii)
4. Only (i) and (iii)

Q.

Which of the following is made of more than one material?

1. Copper shavings

2. Plastic Bottles

3. Iron rods

4. Computers

Q. Fill in the names of useful items made from jute fibres in Figure. One such example is given.​

Q. Find the odd one out from the following:
Gold, Soil, Aluminum, Silver, Platinum, Iron

1. Aluminum
2. Silver
3. Soil
4. Iron

Q.

Classify the fabric of the following items as natural or artificial -

Dhoti, Venkatagiri saree, jeans, umbrella cloth, bed sheets, your shirt or skirt, raincoat, gunny bags.

Q.

Question 1

Name five objects which can be made from wood.