Question 1 :
Fill in the blank: Switches, electrical plugs and sockets are made of _________.
Question 2 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c660f59b460d7261e5e8.PNG' />
In the above figure, state whether the direction of current is correct or not.
Question 4 :
State whether True or False: The bulb glows only when current flows through the circuit.
Question 5 :
State whether True or False: Human body is an insulator of electricity.
Question 6 :
Fill in the blank : An electric cell has _______ terminals.
Question 7 :
State whether True or False: Electric current can flow through metals.
Question 8 :
State whether True or False: The electric circuit provides a complete path for electricity to pass between the two terminals of the electric cell.
Question 9 :
A torch is not functioning, though contact points in the torch are in working condition. What can be the possible reason for this?
Question 10 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc1a9978c526e972caefc8.PNG' />
Would the bulb glow in the circuit shown in figure?
Question 12 :
Instead of metal wires, a jute string can be used to make a circuit. Yes or No ?
Question 13 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c661f59b460d7261e5ea.PNG' />
In the above figure, state whether the direction of current is correct or not.
Question 14 :
Which of the following device is used to perform the activity to watch movies?
Question 15 :
Filament is an important part of a bulb. Yes or No ?
Question 16 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c66cf59b460d7261e5f4.PNG' />
The above figure shows a bulb with its different parts marked as 1, 2, 3, 4 and 5. Which of them label the terminals of the bulb?
Question 18 :
Fill in the blank: Electricity to the bulb in a torch is provided by the ________.
Question 20 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6fef59b460d7261e66e.PNG' />
Why won't the bulb glow in the circuit shown above, if instead of safety pin we use an eraser?
Question 22 :
The types of movements seen in Fish is/are: (i) Flying (ii) Walking (iii) Swimming (iv) Running (v) Creeping (vi) Slithering
Question 25 :
Indicate True(T) and False(F) in this sentence: The cartilages are harder than bones.
Question 26 :
Which of the following types of movements is seen in snake.
Question 27 :
Provide one word answers to the following statement : Joint where our neck joins the head.
Question 28 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6faf59b460d7261e669.PNG' />
Given above is the picture of a skeleton. What is h ?
Question 29 :
The types of movements seen in Horse is/are: (i) Flying (ii) Walking (iii) Swimming (iv) Running (v) Creeping (vi) Slithering
Question 31 :
How does earthworm fix parts of its body to the ground?
Question 36 :
Write the type of joint which is used for movement:
A person lifts weights to build up his biceps.
Question 37 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6f7f59b460d7261e665.PNG' />
Given above is the picture of a skeleton. What is d ?
Question 38 :
Choose the correct answer:
Part of the body with a fixed joint is -
Question 39 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1c6dbf59b460d7261e63f.jpg' />
A cylinder is made with a cardboard by a person, as shown in given figure. Then, he attaches a small pencil to the cylinder by piercing the cylinder at the centre, as shown. Now, he makes a hollow half cylinder from cardboard such that the rolled up cylinder can fit inside it easily. The hollow half cylinder with the rolled up cylinder sitting inside it, allows movement like a hinge. He tries to move the rolled up cylinder. How does it move?
Question 40 :
Which body part does the cow use for moving from place to place?
Question 41 :
A balloon changes its size and shape on blowing air into it. Will it gain its previous shape and size if air blown out ?
Question 42 :
Complete the sentence:
Rolling of chapati and baking of chapati are the changes that _____.
Question 43 :
A potter working on his wheel. He shapes a lump of clay into a pot. He then bakes the pot in an oven. Can this change be reversed?
Question 44 :
Evaporation is the process of liquid turning into vapour. TRUE or FALSE ?
Question 46 :
Paheli mixed flour and water and (i) made a dough, (ii) rolled the dough to make a chapati, (iii) baked the chapati on a pan, (iv) dried the chapati and ground it in a grinder to make powder. Identify all the changes (i) to (iv) as the changes that can be reversed.
Question 48 :
The ripening of mango . Can this change be reversed ?
Question 50 :
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 52 :
Example for the change which occurs on mixing two substances, but cannot be reversed is:
Question 54 :
A process in which an object becomes smaller or shrinks is called ?
Question 55 :
The iron blade of some tools has a ring in which the wooden handle is fixed. Normally, the ring is slightly smaller in size than the wooden handle. To fix the handle, the ring is ?
Question 56 :
Paneer is made up of milk , can we get milk from paneer ?
Question 57 :
Complete the sentence:
Iron rim is made slightly smaller than the wooden wheel. The rim is usually heated before fixing into the wooden wheel, because on heating the iron rim _____.
Question 58 :
Cold milk is heated on a gas stove, can we get cold milk again ?
