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CBSE 7th Social Science Theme D - The Constitution of India- An Introduction - New Sample Question Papers Study Material - QB365 Set A
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Published on: 31/10/2025
Download CBSE Class 7th Standard CBSE Science question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 7th Standard CBSE Science
Questions + Answers key
Take MCQ Science Test
1.
Filament is made of________
2.
Our body is a_____________of electricity.
3.
Blood consists of _______, _______, ________ and platelets.
4.
The main excretory product in human beings is ____________.
5.
Haemoglobin is present in __________ cells.
6.
(a) Draw a circuit diagram to represent a circuit shown in a figure
.png)
(b) If the bulb is not glowing in a circuit, what could be two possible reasons for the same
7.
Describe the function of the heart.
8.
Name the functional units of the major excretory organ of humans.
9.
Blood is a fluid connective tissue. Justify.
10.
A battery is a combination of
only single cell
only two cells
two or more cells
None of the above
11.
When a switch is in OFF position,
(i) circuit starting from the positive terminal of the cell stops at the switch
(ii) circuit is open
(iii) no current flows through it
(iv) current flows after sometime
Choose the combination of correct answer from the following.
All are correct
(ii) and (iii) are correct
Only (iv) is correct
(i) and (ii) are correct
12.
Aquatic animals like fish excrete their wastes in gaseous form as
oxygen
hydrogen
ammonia
nitrogen
13.
The lower chambers of heart is called
atria
ventricles
aorta
vena cava
14.
The organ which controls the blood circulation in body is
Liver
Lungs
Heart
Kidney
1.
( )
Tungsten
2.
( )
good conductor
3.
( )
plasma, RBCs, WBCs
4.
( )
urea
5.
( )
Red Blood Cells (RBCs)
6.
(a) Circuit Diagram
.png)
(b)Two possible reasons:
(i) Switch is in OFF position.
(ii) Filament of bulb gets broken.
7.
The heart acts as a pump for the transport of blood. The human heart is divided into four chambers. The upper two chambers are called right and left atrium and the lower two chambers are called the right and left ventricles. The right side of the heart, i.e. the right auricle and ventricle receive carbon dioxide rich blood from all parts of the body and transport it to the lungs.
Its left side, i.e. the left auricle and ventricle, receive oxygen-rich blood from the lungs which is transported it to all parts of the body.
8.
Kidney is the major excretory organ and nephrons are its functional units.
9.
Blood is a fluid tissue which connects all the parts of body with each other.
10.
(c)
two or more cells
11.
(d)
(i) and (ii) are correct
12.
(c)
ammonia
13.
(b)
ventricles
14.
(c)
Heart
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