# Selina solutions for Concise Physics Class 7 ICSE chapter 1 - Physical Quantities and Measurement [Latest edition]

## Chapter 1: Physical Quantities and Measurement

Objective Questions

### Selina solutions for Concise Physics Class 7 ICSE Chapter 1 Physical Quantities and Measurement Objective Questions

Objective Questions | Q 1.1

Write true or false for a given statement

The S.I. unit of volume is the liter.

• True

• False

Objective Questions | Q 1.2

Write true or false for a given statement

A measuring beaker of capacity 200 ml can measure only the volume. 200 ml of a liquid.

• True

• False

Objective Questions | Q 1.3

Write true or false for a given statement

cm2 is a smaller unit of area than m2

• True

• False

Objective Questions | Q 1.4

Write true or false for a given statement

Equal volumes of two different substances have equal masses.

• True

• False

Objective Questions | Q 1.5

Write true or false for a given statement

The S.I. unit of density is g cm-3.

• True

• False

Objective Questions | Q 1.6

Write true or false for a given statement

1 g cm-3 = 1000 kg m-3.

• True

• False

Objective Questions | Q 1.7

Write true or false for a given statement.

The density of water is maximum at 4°C.

• True

• False

Objective Questions | Q 1.8

Write true or false for a given statement.

The speed 5 ms-1 is less than 25 km h-1.

• True

• False

Objective Questions | Q 1.9

Write true or false for a given statement.

The S.I. unit of speed is ms-1.

• True

• False

Objective Questions | Q 2.1

Fill in the blank

l m3 =..........cm3

Objective Questions | Q 2.2

Fill in the blank

The volume of an irregular solid is determined by the method of _____

Objective Questions | Q 2.3

Fill in the blank

Volume of a cube = _________

Objective Questions | Q 2.4

The area of an irregular lamina is measured by using a ____________.

Objective Questions | Q 2.5

Fill in the blank

Mass = density × _______

Objective Questions | Q 2.6

Fill in the blank

The S.I. unit of density is _______

Objective Questions | Q 2.7

Fill in the blank

1 g cm-3 = _______ kg m-3.

Objective Questions | Q 2.8

Fill in the blank

36 km h-1 = _______ ms-1.

Objective Questions | Q 2.9

Fill in the blank

Distance travelled d = ________ × time t

Objective Questions | Q 3

Match the following:

 Column A Column B 1.Volume of a liquid 1. kg m^-3 2. Area of a leaf 2. m^3 3. S.I. unit of volume 3. graph paper 4. S.I. unit of density 4. m s^-1 5. S.I.unit of speed 5. measuring cylinder
Objective Questions | Q 4.1

Select the correct alternative

One litre is equal to :

• 1 cm-3

• 1 m3

• 10-3  cm3

• 10-3 m3

Objective Questions | Q 4.2

Select the correct alternative

A metallic piece displaces water of volume 15 ml. The volume of piece is :

• 15 cm

• 15 m 3

• 15 × 103 cm3

• 15 × 103 cm

Objective Questions | Q 4.3

Select the correct alternative

A piece of paper of dimensions 1.5 m x 20 cm has area :

• 30 m2

• 300 cm2

• 0.3 m2

• 3000 m3

Objective Questions | Q 4.4

Select the correct alternative

The correct relation is :

• d = M × V

• M = d × V

• V = d × M

• d = M + V

Objective Questions | Q 4.5

Select the correct alternative

The density of alcohol is 0.8 g cm-3. In S.I. unit, it will be :

• 0.8 kg m-3

• 0.0008 kg m-3

• 800 kg m-3

• 8 x 103 kg m-3

Objective Questions | Q 4.6

Select the correct alternative

The density of aluminium is 2.7 g cm-3 and of brass is 8.4 g cm-3. For the same mass, the volume of:

• both will be same

• aluminium will be less than that of brass

• aluminium will be more than that of brass

• nothing can be said.

Objective Questions | Q 4.7

Select the correct alternative

A block of wood of density 0.8 g cm-3 has a volume of 60 cm3. The mass of block will be :

• 60.8 g

• 75 g

•  48 g

• 0.013

Objective Questions | Q 4.8

Select the correct alternative

The correct relation for speed is

• Speed = distance x time

• speed = distance / time

• speed = time / distance

• speed = 1 / distance x time

Objective Questions | Q 4.9

Select the correct alternative

A boy travels a distance 150 m in 1 minute. His speed is

•  150 m s-1

• 2.5 m s-1

• 25 m s-1

• 9 m s-1

### Selina solutions for Concise Physics Class 7 ICSE Chapter 1 Physical Quantities and Measurement Short/Long Answer Questions

Short/Long Answer Questions | Q 1

Define the term volume of an object.

Short/Long Answer Questions | Q 2

State and define the S.I. unit of volume.

Short/Long Answer Questions | Q 3

State two smaller units of volume. How are they related to the S.I. unit?

Short/Long Answer Questions | Q 4

How will you determine the volume of a cuboid ? Write the formula you will use.

Short/Long Answer Questions | Q 5

Name two devices which are used to measure the volume of an object. Draw their neat diagrams.

Short/Long Answer Questions | Q 6

How can you determine the volume of an irregular solid (say a piece of brass) ? Describe in steps with neat diagrams.

Short/Long Answer Questions | Q 7

You are required to take out 200 ml of milk from a bucket full of milk. How will you do it ?

Short/Long Answer Questions | Q 8

Describe the method in steps to find the area of an irregular lamina using a graph paper.

Short/Long Answer Questions | Q 9

Define the term density of a substance.

Short/Long Answer Questions | Q 10

State the S.I. and C.G.S. units of density. How are they inte related ?

Short/Long Answer Questions | Q 11

‘The density of brass is 8.4 g cm’3’. What do you mean by the statement ?

Short/Long Answer Questions | Q 12

Arrange the following substances in order of their increasing density:
(a) iron
(b) cork
(c) brass
(d) water
(e) mercury

Short/Long Answer Questions | Q 13.1

How does the density of water changes when  it is heated from 0°C to 4°C,

Short/Long Answer Questions | Q 13.2

How does the density of water changes when it is heated from 4°C to 10°C ?

Short/Long Answer Questions | Q 14

Write the density of water at 4°C.

Short/Long Answer Questions | Q 15

Explain the meaning of the term speed.

Short/Long Answer Questions | Q 16

Write the S.I. unit of speed.

Short/Long Answer Questions | Q 17

A car travels with a speed 12 m s”1, while a scooter travels with a speed 36 km h-1. Which of the two travels faster ?

Numericals

### Selina solutions for Concise Physics Class 7 ICSE Chapter 1 Physical Quantities and Measurement Numericals

Numericals | Q 1

The length, breadth and height of a water tank are 5 m, 2.5 m and 1.25 m respectively. Calculate the capacity of the water tank in (a) m3 (b) litre.

Numericals | Q 2

A solid silver piece is immersed in water contained in a measuring cylinder. The level of water rises from 50 ml to 62 ml. Find the volume of silver piece.

Numericals | Q 3

Find the volume of a liquid present in a dish of dimensions 10 cm x 10 cm x 5 cm.

Numericals | Q 4

A rectangular field is of length 60 m and breadth 35 m. Find the area of the field.

Numericals | Q 5

Find the approximate area of an irregular lamina of which boundary line is drawn on the graph paper shown in following figure.

Numericals | Q 6

A piece of brass of volume 30 cm3 has a mass of 252 g. Find the density of brass in (i) g cm-3, (ii) kg m-3.

Numericals | Q 7

The mass of an iron ball is 312 g. The density of iron is 7.8 g cm-3. Find the volume of the ball.

Numericals | Q 8

A cork has a volume 25 cm3. The density of cork is 0.25 g cm-3. Find the mass of cork.

Numericals | Q 9

The mass of 5 litre of water is 5 kg. Find the density of water in g cm-3.

Numericals | Q 10

A cubical tank of side 1 m is filled with 800 kg of a liquid. Find:
(i) the volume of tank,
(ii) the density of liquid in kg m-3.

Numericals | Q 11

A block of iron has dimensions 2 m × 0.5 m × 0.25 m. The density of iron is 7.8 g cm-3. Find the mass of block.

Numericals | Q 12.1

The mass of a lead piece is 115 g. When it is immersed into a measuring cylinder, the water level rises from 20 ml mark to 30 ml mark.
Find the volume of the lead piece.

Numericals | Q 12.2

The mass of a lead piece is 115 g. When it is immersed into a measuring cylinder, the water level rises from 20 ml mark to 30 ml mark ,
Find the density of the lead in kg m-3.

Numericals | Q 13

The density of copper is 8.9 g cm-3. What will be its density in kg m-3 ?

Numericals | Q 14.1

A car travels a distance of 15 km in 20 minute. Find the speed of the car in  km h-1.

Numericals | Q 14.2

A car travels a distance of 15 km in 20 minute. Find the speed of the car in m s-1.

Numericals | Q 15

How long a train will take to travel a distance of 200 km with a speed of 60 km h-1 ?

Numericals | Q 16

A boy travels with a speed of 10 m s-1 for 30 minute. How much distance does he travel ?

Numericals | Q 17

Express 36 km h-1 in m s-1

Numericals | Q 18

Express 15 m s-1 in km h-1.

## Selina solutions for Concise Physics Class 7 ICSE chapter 1 - Physical Quantities and Measurement

Selina solutions for Concise Physics Class 7 ICSE chapter 1 (Physical Quantities and Measurement) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Physics Class 7 ICSE solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Selina textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Concise Physics Class 7 ICSE chapter 1 Physical Quantities and Measurement are Physical Quantities, Determination of Density of a Regular Solid, Determination of Density of an Irregular Solid, Determination of Density of a Liquid, Measurement of Density, Measurements, Measurement of Volume, Volume and It’s Unit, Area and It’s Unit, Measurement of Area, Density and It’s Unit, Speed.

Using Selina Class 7 solutions Physical Quantities and Measurement exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 7 prefer Selina Textbook Solutions to score more in exam.

Get the free view of chapter 1 Physical Quantities and Measurement Class 7 extra questions for Concise Physics Class 7 ICSE and can use Shaalaa.com to keep it handy for your exam preparation