Are these practice questions for Exploring the Investigative World of Science based on the CBSE pattern?

Yes. Every practice question is modeled on the CBSE Class 8 Science exam pattern — including MCQs, assertion-reason questions, and short-answer formats that frequently appear in CBSE papers.

Are the practice questions for Exploring the Investigative World of Science free?

Yes. Every chapter includes free practice questions for Class 8 students to get you started.

What types of questions are included?

The practice set for Exploring the Investigative World of Science mainly includes MCQs and CBSE-style short-answer questions, with instant feedback on each answer. For full-length textbook practice, use the NCERT Solutions page.

Are the practice questions suitable for board exam preparation?

Yes. The questions test the same concepts and depth that CBSE asks in board exams. After finishing, also solve the NCERT and NCERT Exemplar exercises for Exploring the Investigative World of Science for full coverage.

How many practice questions are there for Exploring the Investigative World of Science?

The number scales with chapter length and concept density. Each chapter typically has 15-50 practice questions across MCQ and short-answer formats.

Exploring the Investigative World of Science Class 8 Science Practice Questions with Answers

easy

Classify the following materials as elements, compounds, or mixtures: oxygen, water, air, and salt (sodium chloride). Justify your classification for each material.

Try solving it in your notebook first, then check the solution.

easy

Describe what happens to light rays when they reflect off a flat mirror.

Try solving it in your notebook first, then check the solution.

easy

List two examples of how electric current is used in everyday life.

Try solving it in your notebook first, then check the solution.

easy

Define the term 'investigation' in the context of science.

Try solving it in your notebook first, then check the solution.

easy

Identify the main components of a mixture.

Try solving it in your notebook first, then check the solution.

easy

Recall two factors that can be changed during an experiment to see how a puri puffs up.

Try solving it in your notebook first, then check the solution.

easy

Compare and contrast the properties of solids, liquids, and gases in terms of the arrangement and movement of their particles.

Try solving it in your notebook first, then check the solution.

easy

How does a vaccine help the body fight infections? Explain the process involved in building immunity through vaccination.

Try solving it in your notebook first, then check the solution.

easy

Name the three states of matter based on the movement of particles.

Try solving it in your notebook first, then check the solution.

medium

A student observes that a metal spoon feels colder than a wooden spoon when both are at room temperature. Analyze this observation and explain why this occurs based on the concept of heat transfer.

Try solving it in your notebook first, then check the solution.

medium

A lens forms a real, inverted image of an object. Analyze the characteristics of the lens (concave or convex) and the possible positions of the object relative to the lens.

Try solving it in your notebook first, then check the solution.

medium

Explain how the phases of the Moon occur and relate them to the relative positions of the Earth, Moon, and Sun. Include a diagram.

Try solving it in your notebook first, then check the solution.

medium

A circuit contains a

6

V battery and a resistor with a resistance of

2

ohms. Calculate the current flowing through the circuit. If the resistance is doubled, how does the current change?

Try solving it in your notebook first, then check the solution.

medium

Describe how air pressure differences lead to wind.

Try solving it in your notebook first, then check the solution.

medium

Describe how scientists observe the phases of the Moon.

Try solving it in your notebook first, then check the solution.

medium

Two identical metal balls are dropped from the same height. One is dropped in air and the other in water. Analyze and explain which ball will reach the ground/bottom first and why.

Try solving it in your notebook first, then check the solution.

medium

Describe how a cyclone is formed. Relate pressure differences and air movement in your explanation.

Try solving it in your notebook first, then check the solution.

medium

Explain the difference between elements, compounds, and mixtures.

Try solving it in your notebook first, then check the solution.

medium

Summarize the relationship between living organisms and their environments.

Try solving it in your notebook first, then check the solution.

medium

A cyclist applies a force of

50

N to the pedals of a bicycle. If the area of each pedal is

0.02

m², calculate the pressure exerted on each pedal. Explain how pressure and force are related in this scenario.

Try solving it in your notebook first, then check the solution.

medium

Explain how understanding forces helps explain why a ball thrown up in the air falls back to the ground.

Try solving it in your notebook first, then check the solution.

medium

Explain why the Earth is considered 'just right' for life.

Try solving it in your notebook first, then check the solution.

medium

A sugar cube is added to a glass of water and stirred. Analyze what happens at the particle level and explain why the sugar cube eventually disappears.

Try solving it in your notebook first, then check the solution.

medium

Describe one way human activities can affect the Earth's climate.

Try solving it in your notebook first, then check the solution.

medium

Analyze the potential consequences of deforestation on ecosystems and climate change. Explain how deforestation contributes to these problems.

Try solving it in your notebook first, then check the solution.

medium

A mirror is used to view an object. Analyze how the type of mirror (plane, concave, or convex) affects the characteristics of the image formed (size, orientation, and whether it is real or virtual).

Try solving it in your notebook first, then check the solution.

medium

A car accelerates from rest to a speed of

20

m/s in

5

seconds. Calculate the average acceleration of the car. Also, describe what this acceleration means in terms of the car's motion.

Try solving it in your notebook first, then check the solution.

hard

A ball is thrown vertically upwards with an initial velocity of

15

m/s. Calculate the maximum height reached by the ball. (Assume

g = 9.8

m/s²)

Try solving it in your notebook first, then check the solution.

hard

Summarize the steps involved in conducting a scientific experiment, using the puri example.

Try solving it in your notebook first, then check the solution.

hard

Explain how the root and kite symbols relate to scientific investigation, according to the text.

Try solving it in your notebook first, then check the solution.

Exploring the Investigative World of ScienceClass 8 Science Practice Questions