Class-4 EVS, Chapter-12, Changing Times, Additional Exercises with Solutions / NCERT


Chapter – 12
Changing Times

Over the sixty years, different materials were used at different times in Chetandas’s houe. List them in correct order.


Click here for Hindi (रिमझिम) Class-4

State True or False:

   1-  Chetandas’s mother used to coat the floor with the mixture of cow dung and mud to keep the insects away. True
   2-  Use of cement made the houses weaker.               False
   3-  In olden days kitchens used to have mud chulhas. True
   4-  A person who works with wood is called a mason.  False
   5-  Sohna village is in Haryana.                                    True

Match the column/ Give one word for the following

A
B
A  person who works with wood
Electrician
A person skilled in construction of house
Plumber
A person skilled in water, sewage and drainage  in plumbing system
Mason
A person skilled in electrical wiring and relating equipment.
Carpenter


Look at picture of construction work in textbook and fill in the table

Work
Tool
What is the person called
Quarrying of stones
Quarry hammer, quarry picks
Quarrier
Mixing mortar
Shovel
Mason
Carrying mortar
Tagari (Pan), ladder
Construction labour
Installing electrical fittings
Plier, electric drill, screw driver
Electrician
Installing water fittings
Tape measure, wrench, level
Plumber


Show India and Pakistan on the Map



Locate Haryana in the Map of India


                                                                                          (Click here for Class-4 English, Marigold) 
Answer the following questions:

Q. Why did Chetandas’s mother coat floor with the mixture of cow dung and mud?
Ans- Chetandas’s motherr coated floor with the mixture of cow dung and mud to keep the instcts away.

Q. From what material, Chetandas’s Baba and Amma made their house?
Ans- Chetandas’s Baba and Amma made their house from following materials:
    1-  Soil
    2-  Husk
    3-  Cow dung
    4-  Mud
    5-  Strips of wood
    6-  Branches of neem and keekar trees
    7-  Old gunny bags

 Q. A lot of mud was used when Chetandas’s parents’ house was made. Why?
Ans- In Chetandas’s house was a kachcha house. A lot of mud was used for making walls, floor and roof.

Q. What material did Chetandas used for making roof of new room?
Ans- Chetandal used iron and cement for making roof of new room.

Q. What material was used for making walls of new room?
Ans- Unbaked bricks were used for making walls of new room.

Q. What type of kitchen did he build ?
Ans- He built a small kitchen in courtyard with mud chulha and place to keep vessels.

Q. Did Chetandas make a toilet in the house? If yes, how was it made?
Ans- Yes, Chetandal made a small toilet with unbaked bricks behind the house.

Q. What changes were made in Chetandas’s house before his elder son’s marriage?
Ans- Following changes were made in Chetandas’s house before his elder son’s marriage:
     1-  Baked bricks were used for making walls.
     2-  Lintel was uased for putting roof.
     3-  Marble chips and cement were used to make fancy floor.
     4-  Pipes were put in tiolet to take away waste.
     5-  Kitchen was made bigger and had gas gas stove.


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