class-4-Science-Our Necessicities

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class-4-Science-Our Necessicities

1 / 20
In which century were synthetic yarns introduced ?
10th
20th
19th
16th

2 / 20
Cotton plant is :
Shallow
Bushy
Lengthy
Hard

3 / 20
Artificial silk is :
Rayon
Acetate
Acrylic
Polyester

4 / 20
Insignias mean :
Uniforms
Fur
Badges
Decoration

5 / 20
To protect the house from the influence of weather, it should be coated with :
Paint
Mud and straw
Dung cake
Spray of kerosene

6 / 20
In Japan houses are usually made of wood because :
Of frequent earthquakes
The Japanese are nomadic
It is cool inside a wooden house
It is very cheap

7 / 20
Slanting roofs :
Keep the house hot and warm
Collect snow
Collect rain water
Do not collect snow and rain water

8 / 20
Existing weather conditions determine the :
Shape of the house in an area
All of the above
Material used for the house in an area
Design of the house in an area

9 / 20
The moisture absorption is :
6%
9.5 %
8.5%
8%

10 / 20
An elevated house on bamboo poles is usually made in places :
Where it is very warm
Where it snows
Where there is fear of theft
Where floods occur due to heavy rains

11 / 20
Polyester is referred to as :
Work horse
Cellulose acetate
Acrylic
Dupont

12 / 20
Cotton plant is :
It is hydrophilic in nature
All the above
t has a cellulose layer
It contains crystalline fibre

13 / 20
Clothes are mainly used :
For comfort and protection
To cover the body
All of these
To be attractive

14 / 20
An important tool in taking body measurement is :
Measuring tape
Tracing wheel
Scale
Thread

15 / 20
Bricks are baked in :
Open furnaces
Furnaces
Kilns
Electric oven

16 / 20
Cotton buds blossom in :
24 day
21 days
23 days
20 days

17 / 20
Eskimos use :
Fur
Helmets
Robes
Bullet proofs

18 / 20
The silk fibre was invented by :
Japanese
Egyptians
Indians
Chinese

19 / 20
Which of these fibres is/are strong and lustrous ?
Wool
Linen
Silk
Cotton

20 / 20
Football players wear :
Protective padding
Fur
Robes
Asbestos clothing

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