Question 1 :
The process of arranging two sets of yarns together to make a fabric is called_______.

Question 2 :
State TRUE or FALSE: Jute is obtained from the leaves of a plant.

Question 3 :
Fill in the blank: Process of arranging two sets of yarns together to make a fabric ____.

Question 5 :
Fill in the blank: These are spun from fibres and then used to make fabrics _____.

Question 6 :
Which type of the following materials is used for making the front glass (wind screen) of a car?

Question 8 :
A person collect samples of vinegar, lemon juice, mustard oil or coconut oil, kerosene or any other liquid. Then, he takes a glass tumbler and fills it up to half with water. Next, he adds a few spoonfuls of lemon juice to this and stir it well. Now, he lets it stand for five minutes and observes whether the liquid mixes with water. What observation can be drawn from this?

Question 10 :
A person collect samples of vinegar, lemon juice, mustard oil or coconut oil, kerosene or any other liquid. Then, he takes a glass tumbler and fills it up to half with water. Next, he adds a few spoonfuls of kerosene to this and stir it well. Now, he lets it stand for five minutes and observes whether the liquid mixes with water. What observation can be drawn from this?

Question 11 :
A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?

Question 13 :
A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

Question 14 :
You accidentally dropped your favourite toy and broke it. This is a change you did not want. Can this change be reversed?

Question 15 :
A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?

Question 18 :
Take some dough and make a ball. Try to roll out a roti. Can this change be reversed ?

Question 19 :
Example for the change which occurs on cooling but can be reversed is:

Question 20 :
Complete the sentence: Rolling of chapati and baking of chapati are the changes that _____.

Question 21 :
Choose the type of plant which has the feature: Hollow stem.

Question 23 :
Fill in the blank: The habitat of plants and animals that live in ................ is called the aquatic habitat.

Question 24 :
Mention one adaptation present in frogs to enable them to swim.

Question 25 :
State True or False: If you happen to go to a desert, you would excrete large amount of urine.