7th Standard Science Term 1: Unit 1 Measurement NMMS
Here are the 50 practice questions based on the 7th Standard Science Term 1: Unit 1 (Measurement), formatted as a text-based test paper. These follow the NMMS exam pattern, including direct questions, match-the-following, and assertion-reasoning types.
NMMS Style Science Practice Questions - Class 7 (Measurement)
1. Which of the following is a fundamental quantity? 1
(a) Area
(b) Volume
(c) Length
(d) Density
2. Assertion (A): Area is a derived quantity.
Reason (R): It is obtained by multiplying two fundamental physical quantities (Length and Breadth). 2
(a) (A) is correct and (R) is the correct explanation for (A)
(b) (A) is correct but (R) is not the correct explanation for (A)
(c) (A) is correct but (R) is wrong
(d) Both (A) and (R) are wrong
3. Match the following quantities with their SI units: 3
| Quantity | Unit |
| :--- | :--- |
| (A) Length | (i) Kelvin |
| (B) Mass | (ii) metre |
| (C) Time | (iii) kilogram |
| (D) Temperature | (iv) second |
(a) A-(ii), B-(iii), C-(iv), D-(i)
(b) A-(i), B-(ii), C-(iii), D-(iv)
(c) A-(ii), B-(iv), C-(iii), D-(i)
(d) A-(iii), B-(ii), C-(iv), D-(i)
4. Which of the following formulas is used to calculate the area of a circle? 4
(a) side × side
(b) length × breadth
(c) $\pi \times r^2$
(d) $\frac{1}{2} \times b \times h$
5. What is the area of a rectangle with length 12 m and breadth 4 m? 5
(a) 16 $m^2$
(b) 48 $m^2$
(c) 24 $m^2$
(d) 32 $m^2$
6. Identify the incorrect pair regarding the area of regularly shaped objects. 6
(a) Square : side × side
(b) Rectangle : length × breadth
(c) Triangle : base × height
(d) Circle : $\pi r^2$
7. Which method is used to find the area of an irregularly shaped object like a leaf? 7
(a) Formula method
(b) Displacement method
(c) Graphical method
(d) Balance method
8. In the graphical method for finding area, what value is multiplied by 'N' (squares more than half)? 8888
(a) 1
(b) 3/4
(c) 1/2
(d) 1/4
9. The amount of space occupied by a three-dimensional object is known as its: 9
(a) Area
(b) Density
(c) Volume
(d) Mass
10. What is the SI unit of Volume? 10
(a) Square metre ($m^2$)
(b) Cubic metre ($m^3$)
(c) Kilogram ($kg$)
(d) Litre ($L$)
11. Find the volume of a cube whose side is 3 cm. 11
(a) 9 $cm^3$
(b) 18 $cm^3$
(c) 27 $cm^3$
(d) 81 $cm^3$
12. Match the shape with its volume formula: 12
| Shape | Formula |
| :--- | :--- |
| (A) Cube | (i) $\pi r^2 h$ |
| (B) Cuboid | (ii) $a^3$ |
| (C) Sphere | (iii) $l \times b \times h$ |
| (D) Cylinder | (iv) $\frac{4}{3} \pi r^3$ |
(a) A-(ii), B-(iii), C-(iv), D-(i)
(b) A-(i), B-(ii), C-(iii), D-(iv)
(c) A-(iii), B-(ii), C-(i), D-(iv)
(d) A-(ii), B-(iv), C-(iii), D-(i)
13. 1 litre is equal to how many cubic centimeters (cc)? 13
(a) 10 cc
(b) 100 cc
(c) 1000 cc
(d) 10000 cc
14. Which instrument is used to measure the volume of a liquid? 14
(a) Beam balance
(b) Measuring cylinder
(c) Stop clock
(d) Graph sheet
15. Assertion (A): The volume of an irregularly shaped stone cannot be calculated by a standard formula.
Reason (R): Stones do not have a regular geometric shape. 15
(a) (A) is correct and (R) is the correct explanation for (A)
(b) (A) is correct but (R) is not the correct explanation for (A)
(c) (A) is correct but (R) is wrong
(d) Both (A) and (R) are wrong
16. When finding the volume of a stone using water displacement, if the initial water level is $V_1$ and the final level is $V_2$, what is the volume of the stone? 16
(a) $V_1 + V_2$
(b) $V_2 - V_1$
(c) $V_1 - V_2$
(d) $V_2 \times V_1$
17. Density is defined as: 17
(a) Mass × Volume
(b) Volume / Mass
(c) Mass / Volume
(d) Area / Volume
18. What is the SI unit of density? 18
(a) $g/cm^3$
(b) $kg/m^2$
(c) $kg/m^3$
(d) $m^3/kg$
19. Which of the following materials is the densest? 19
(a) Water
(b) Iron
(c) Gold
(d) Wood
20. If a solid cylinder of mass 280 kg has a volume of 4 $m^3$, what is its density? 20
(a) 70 $kg/m^3$
(b) 1120 $kg/m^3$
(c) 140 $kg/m^3$
(d) 0.014 $kg/m^3$
21. Assertion (A): An iron ball sinks in water.
Reason (R): The density of iron is greater than that of water. 21212121
(a) (A) is correct and (R) is the correct explanation for (A)
(b) (A) is correct but (R) is not the correct explanation for (A)
(c) (A) is correct but (R) is wrong
(d) Both (A) and (R) are wrong
22. Why does oil float on water? 22
(a) Oil is denser than water.
(b) Oil is less dense than water.
(c) Oil and water have the same density.
(d) Oil is a solid.
23. Arrange the following substances in increasing order of their density: Iron, Air, Water, Gold. 23
(a) Air < Water < Iron < Gold
(b) Water < Air < Iron < Gold
(c) Air < Water < Gold < Iron
(d) Gold < Iron < Water < Air
24. What is the relationship between Mass (M), Volume (V), and Density (D)? 24
(a) M = D / V
(b) V = M × D
(c) M = D × V
(d) D = M × V
25. Calculate the volume of a sphere made of copper if its mass is 3000 kg and the density of copper is 8900 $kg/m^3$? 25
(a) 0.34 $m^3$
(b) 2.96 $m^3$
(c) 5900 $m^3$
(d) 3.4 $m^3$
26. Which of the following units is used to measure the distance between celestial bodies? 26
(a) Kilometre
(b) Astronomical Unit
(c) Millimetre
(d) Kilogram
27. One Astronomical Unit (AU) is defined as: 27
(a) The distance travelled by light in one year.
(b) The average distance between the Earth and the Moon.
(c) The average distance between the Earth and the Sun.
(d) The distance between the Sun and Neptune.
28. What is the value of 1 Astronomical Unit in metres? 28
(a) $1.496 \times 10^{11}$ m
(b) $9.46 \times 10^{15}$ m
(c) $3 \times 10^8$ m
(d) $1.496 \times 10^{8}$ m
29. A Light Year is a unit of: 29
(a) Time
(b) Distance
(c) Light intensity
(d) Speed
30. What is the value of 1 Light Year? 30
(a) $1.496 \times 10^{11}$ m
(b) $9.46 \times 10^{15}$ m
(c) $3 \times 10^8$ m
(d) $365 \times 24 \times 60 \times 60$ m
31. The nearest star to our solar system, Proxima Centauri, is at a distance of: 31
(a) 1.3 Light Years
(b) 4.22 Light Years
(c) 8.3 Light Minutes
(d) 25,000 Light Years
32. Choose the odd one out based on the state of matter/density table. 32
(a) Air
(b) Water
(c) Kerosene
(d) Mercury
33. Assertion (A): Cooking oil floats on water.
Reason (R): Water is denser than cooking oil. 33
(a) (A) is correct and (R) is the correct explanation for (A)
(b) (A) is correct but (R) is not the correct explanation for (A)
(c) (A) is correct but (R) is wrong
(d) Both (A) and (R) are wrong
34. Which of the following is NOT a derived unit? 34
(a) $m^2$
(b) $kg/m^3$
(c) kilogram (kg)
(d) $m^3$
35. Two spheres A and B have equal volumes. The mass of A is twice the mass of B. What is the ratio of the density of A to B? 353535
(a) 2:1
(b) 1:2
(c) 4:1
(d) 1:4
36. Identify the correct statement about 'Capacity'. 36
(a) It is the minimum volume a container can hold.
(b) It is the maximum volume of liquid a container can hold.
(c) It is the weight of the container.
(d) It is the density of the container.
37. Which of the following is correct regarding the density of water? 37
(a) 1000 $kg/m^3$
(b) 1 $kg/m^3$
(c) 100 $kg/m^3$
(d) 13600 $kg/m^3$
38. Calculate the density of a block of wood of mass 6 kg and volume 10 $m^3$. 38
(a) 0.6 $kg/m^3$
(b) 60 $kg/m^3$
(c) 1.6 $kg/m^3$
(d) 600 $kg/m^3$
39. Match the derived quantities with their formulas: 39
| Quantity | Formula |
| :--- | :--- |
| (A) Area | (i) Mass / Volume |
| (B) Volume | (ii) Length × Breadth |
| (C) Density | (iii) Distance / Time |
| (D) Speed | (iv) Length × Breadth × Height |
(a) A-(ii), B-(iv), C-(i), D-(iii)
(b) A-(iv), B-(ii), C-(iii), D-(i)
(c) A-(ii), B-(i), C-(iv), D-(iii)
(d) A-(i), B-(ii), C-(iii), D-(iv)
40. In the CGS system, the unit of density is: 40
(a) $kg/m^3$
(b) $g/cm^3$
(c) $mg/mm^3$
(d) $g/m^3$
41. What happens when the earth is in its 'Perihelion' position? 41
(a) The distance between Earth and Sun is the largest.
(b) The distance between Earth and Sun is the shortest.
(c) The Earth stops rotating.
(d) The distance is exactly 1 AU.
42. Speed of light in a vacuum is: 42
(a) $3 \times 10^8$ km/s
(b) $3 \times 10^8$ m/s
(c) $330$ m/s
(d) $9.8$ m/s
43. Which of the following statements about liquids is FALSE? 43
(a) Liquids have a fixed volume.
(b) Liquids have a fixed shape.
(c) Liquids can be measured in Litres.
(d) Liquids occupy space.
44. If you have a mercury column and an iron ball, what will happen? 44
(a) The iron ball will sink.
(b) The iron ball will float.
(c) The iron ball will dissolve.
(d) The mercury will freeze.
45. Which represents the correct conversion of density units? 45
(a) 1 $g/cm^3$ = 1 $kg/m^3$
(b) 1 $g/cm^3$ = 1000 $kg/m^3$
(c) 1 $kg/m^3$ = 1000 $g/cm^3$
(d) 1 $g/cm^3$ = 100 $kg/m^3$
46. Which of the following is correct? 46
(a) 1L = 1 cc
(b) 1L = 10 cc
(c) 1L = 100 cc
(d) 1L = 1000 cc
47. The formula to find the volume of a cylinder is: 47
(a) $\pi r^2 h$
(b) $\pi r^2$
(c) $\frac{4}{3} \pi r^3$
(d) $l \times b \times h$
48. Assertion (A): A piece of wood floats on water.
Reason (R): Wood is lighter (less dense) than water. 48484848
(a) (A) is correct and (R) is the correct explanation for (A)
(b) (A) is correct but (R) is not the correct explanation for (A)
(c) (A) is correct but (R) is wrong
(d) Both (A) and (R) are wrong
49. What is the area of a square with side 10 m? 49
(a) 40 m
(b) 100 $m^2$
(c) 20 $m^2$
(d) 100 $m^3$
50. Which physical quantity equals 'Distance travelled by light in one year'? 50
(a) Astronomical Unit
(b) Light Year
(c) Light Second
(d) Parsec
Answer Key
(c) Length (Fundamental)
(a) A is correct and R is correct explanation
(a) A-(ii), B-(iii), C-(iv), D-(i)
(c) $\pi r^2$
(b) 48 $m^2$ ($12 \times 4$)
(c) Triangle : base × height (Correct is $1/2 \times b \times h$)
(c) Graphical method
(b) 3/4
(c) Volume
(b) Cubic metre ($m^3$)
(c) 27 $cm^3$ ($3 \times 3 \times 3$)
(a) A-(ii), B-(iii), C-(iv), D-(i)
(c) 1000 cc
(b) Measuring cylinder
(a) A is correct and R is correct explanation
(b) $V_2 - V_1$
(c) Mass / Volume
(c) $kg/m^3$
(c) Gold
(a) 70 $kg/m^3$ ($280 / 4$)
(a) A is correct and R is correct explanation
(b) Oil is less dense than water
(a) Air < Water < Iron < Gold
(c) M = D × V
(a) 0.34 $m^3$ ($3000 / 8900$)
(b) Astronomical Unit
(c) The average distance between the Earth and the Sun
(a) $1.496 \times 10^{11}$ m
(b) Distance
(b) $9.46 \times 10^{15}$ m
(b) 4.22 Light Years
(a) Air (Gas)
(a) A is correct and R is correct explanation
(c) kilogram (Fundamental)
(a) 2:1
(b) Maximum volume of liquid a container can hold
(a) 1000 $kg/m^3$
(a) 0.6 $kg/m^3$
(a) A-(ii), B-(iv), C-(i), D-(iii)
(b) $g/cm^3$
(b) The distance between Earth and Sun is the shortest
(b) $3 \times 10^8$ m/s
(b) Liquids have a fixed shape (False)
(b) The iron ball will float
(b) 1 $g/cm^3$ = 1000 $kg/m^3$
(d) 1L = 1000 cc
(a) $\pi r^2 h$
(a) A is correct and R is correct explanation
(b) 100 $m^2$
(b) Light Year
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